Revert "Bump version to 0.11.0"

Bump version to 0.11.0

.github/workflows/main.yml

@@ -4,6 +4,8 @@ on:
       - main
 
   pull_request:
+  release:
+    types: [published]
 
 jobs:
   build:
@@ -12,26 +14,53 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Check formatting
+        run: npx prettier --check .
+
       - uses: actions/setup-node@v4
         with:
           node-version: 18
           cache: npm
 
+      # Working around https://github.com/npm/cli/issues/4828
+      # - run: npm ci
+      - run: npm install --no-package-lock
+
+      - name: Check linting
+        working-directory: ./client
+        run: npm run lint
+
+      - name: Run client tests
+        working-directory: ./client
+        run: npm test
+
+      - run: npm run build
+
+  publish:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release'
+    environment: release
+    needs: build
+
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          repository: modelcontextprotocol/typescript-sdk
-          ssh-key: ${{ secrets.TYPESCRIPT_SDK_KEY }}
-          path: packages/@modelcontextprotocol/sdk
-
-      - run: npm ci
-        working-directory: packages/@modelcontextprotocol/sdk
-
-      - run: npm pack
-        working-directory: packages/@modelcontextprotocol/sdk
-
-      - run: npm install --save packages/@modelcontextprotocol/sdk/modelcontextprotocol-sdk-*.tgz
+          node-version: 18
+          cache: npm
+          registry-url: "https://registry.npmjs.org"
 
       # Working around https://github.com/npm/cli/issues/4828
       # - run: npm ci
       - run: npm install --no-package-lock
+
       - run: npm run build
+
+      # TODO: Add --provenance once the repo is public
+      - run: npm run publish-all
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

@@ -1,6 +1,11 @@
 .DS_Store
-node_modules
+.vscode
+.idea
+node_modules/
+*-workspace/
 server/build
 client/dist
 client/tsconfig.app.tsbuildinfo
 client/tsconfig.node.tsbuildinfo
+cli/build
+test-output

.npmrc

@@ -1 +1,2 @@
-registry = "https://registry.npmjs.org/"
+registry="https://registry.npmjs.org/"
+@modelcontextprotocol:registry="https://registry.npmjs.org/"

.prettierignore

@@ -1,2 +1,4 @@
 packages
 server/build
+CODE_OF_CONDUCT.md
+SECURITY.md

CLAUDE.md

@@ -0,0 +1,33 @@
+# MCP Inspector Development Guide
+
+## Build Commands
+
+- Build all: `npm run build`
+- Build client: `npm run build-client`
+- Build server: `npm run build-server`
+- Development mode: `npm run dev` (use `npm run dev:windows` on Windows)
+- Format code: `npm run prettier-fix`
+- Client lint: `cd client && npm run lint`
+
+## Code Style Guidelines
+
+- Use TypeScript with proper type annotations
+- Follow React functional component patterns with hooks
+- Use ES modules (import/export) not CommonJS
+- Use Prettier for formatting (auto-formatted on commit)
+- Follow existing naming conventions:
+  - camelCase for variables and functions
+  - PascalCase for component names and types
+  - kebab-case for file names
+- Use async/await for asynchronous operations
+- Implement proper error handling with try/catch blocks
+- Use Tailwind CSS for styling in the client
+- Keep components small and focused on a single responsibility
+
+## Project Organization
+
+The project is organized as a monorepo with workspaces:
+
+- `client/`: React frontend with Vite, TypeScript and Tailwind
+- `server/`: Express backend with TypeScript
+- `bin/`: CLI scripts

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+mcp-coc@anthropic.com.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -0,0 +1,37 @@
+# Contributing to Model Context Protocol Inspector
+
+Thanks for your interest in contributing! This guide explains how to get involved.
+
+## Getting Started
+
+1. Fork the repository and clone it locally
+2. Install dependencies with `npm install`
+3. Run `npm run dev` to start both client and server in development mode
+4. Use the web UI at http://127.0.0.1:6274 to interact with the inspector
+
+## Development Process & Pull Requests
+
+1. Create a new branch for your changes
+2. Make your changes following existing code style and conventions. You can run `npm run prettier-check` and `npm run prettier-fix` as applicable.
+3. Test changes locally by running `npm test`
+4. Update documentation as needed
+5. Use clear commit messages explaining your changes
+6. Verify all changes work as expected
+7. Submit a pull request
+8. PRs will be reviewed by maintainers
+
+## Code of Conduct
+
+This project follows our [Code of Conduct](CODE_OF_CONDUCT.md). Please read it before contributing.
+
+## Security
+
+If you find a security vulnerability, please refer to our [Security Policy](SECURITY.md) for reporting instructions.
+
+## Questions?
+
+Feel free to [open an issue](https://github.com/modelcontextprotocol/mcp-inspector/issues) for questions or create a discussion for general topics.
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the MIT license.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Anthropic, PBC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -2,30 +2,172 @@
 
 The MCP inspector is a developer tool for testing and debugging MCP servers.
 
-## Getting started
+![MCP Inspector Screenshot](https://raw.githubusercontent.com/modelcontextprotocol/inspector/main/mcp-inspector.png)
 
-This repository depends on the [MCP TypeScript SDK](https://github.com/modelcontextprotocol/typescript-sdk/). Until these repositories are made public and published to npm, the SDK has to be preinstalled manually:
+## Running the Inspector
 
-1. Download the [latest release of the SDK](https://github.com/modelcontextprotocol/typescript-sdk/releases) (the file named something like `modelcontextprotocol-sdk-0.1.0.tgz`). You don't need to extract it.
-2. From within your checkout of _this_ repository, run `npm install --save path/to/sdk.tgz`. This will overwrite the expected location for the SDK to allow you to proceed.
+### Requirements
 
-Then, you should be able to install the rest of the dependencies normally:
+- Node.js: ^22.7.5
 
-```sh
-npm install
+### From an MCP server repository
+
+To inspect an MCP server implementation, there's no need to clone this repo. Instead, use `npx`. For example, if your server is built at `build/index.js`:
+
+```bash
+npx @modelcontextprotocol/inspector node build/index.js
 ```
 
-You can run it in dev mode via:
+You can pass both arguments and environment variables to your MCP server. Arguments are passed directly to your server, while environment variables can be set using the `-e` flag:
+
+```bash
+# Pass arguments only
+npx @modelcontextprotocol/inspector node build/index.js arg1 arg2
+
+# Pass environment variables only
+npx @modelcontextprotocol/inspector -e key=value -e key2=$VALUE2 node build/index.js
+
+# Pass both environment variables and arguments
+npx @modelcontextprotocol/inspector -e key=value -e key2=$VALUE2 node build/index.js arg1 arg2
+
+# Use -- to separate inspector flags from server arguments
+npx @modelcontextprotocol/inspector -e key=$VALUE -- node build/index.js -e server-flag
+```
+
+The inspector runs both an MCP Inspector (MCPI) client UI (default port 6274) and an MCP Proxy (MCPP) server (default port 6277). Open the MCPI client UI in your browser to use the inspector. (These ports are derived from the T9 dialpad mapping of MCPI and MCPP respectively, as a mnemonic). You can customize the ports if needed:
+
+```bash
+CLIENT_PORT=8080 SERVER_PORT=9000 npx @modelcontextprotocol/inspector node build/index.js
+```
+
+For more details on ways to use the inspector, see the [Inspector section of the MCP docs site](https://modelcontextprotocol.io/docs/tools/inspector). For help with debugging, see the [Debugging guide](https://modelcontextprotocol.io/docs/tools/debugging).
+
+### Authentication
+
+The inspector supports bearer token authentication for SSE connections. Enter your token in the UI when connecting to an MCP server, and it will be sent in the Authorization header. You can override the header name using the input field in the sidebar.
+
+### Security Considerations
+
+The MCP Inspector includes a proxy server that can run and communicate with local MCP processes. The proxy server should not be exposed to untrusted networks as it has permissions to spawn local processes and can connect to any specified MCP server.
+
+### Configuration
+
+The MCP Inspector supports the following configuration settings. To change them, click on the `Configuration` button in the MCP Inspector UI:
+
+| Setting                                 | Description                                                                                                  | Default |
+| --------------------------------------- | ------------------------------------------------------------------------------------------------------------ | ------- |
+| `MCP_SERVER_REQUEST_TIMEOUT`            | Timeout for requests to the MCP server (ms)                                                                  | 10000   |
+| `MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS` | Reset timeout on progress notifications                                                                      | true    |
+| `MCP_REQUEST_MAX_TOTAL_TIMEOUT`         | Maximum total timeout for requests sent to the MCP server (ms) (Use with progress notifications)             | 60000   |
+| `MCP_PROXY_FULL_ADDRESS`                | Set this if you are running the MCP Inspector Proxy on a non-default address. Example: http://10.1.1.22:5577 | ""      |
+
+These settings can be adjusted in real-time through the UI and will persist across sessions.
+
+The inspector also supports configuration files to store settings for different MCP servers. This is useful when working with multiple servers or complex configurations:
+
+```bash
+npx @modelcontextprotocol/inspector --config path/to/config.json --server everything
+```
+
+Example server configuration file:
+
+```json
+{
+  "mcpServers": {
+    "everything": {
+      "command": "npx",
+      "args": ["@modelcontextprotocol/server-everything"],
+      "env": {
+        "hello": "Hello MCP!"
+      }
+    },
+    "my-server": {
+      "command": "node",
+      "args": ["build/index.js", "arg1", "arg2"],
+      "env": {
+        "key": "value",
+        "key2": "value2"
+      }
+    }
+  }
+}
+```
+
+### From this repository
+
+If you're working on the inspector itself:
+
+Development mode:
 
 ```bash
 npm run dev
 ```
 
-This will start both the client and server.
+> **Note for Windows users:**
+> On Windows, use the following command instead:
+>
+> ```bash
+> npm run dev:windows
+> ```
 
-To run in production mode:
+Production mode:
 
 ```bash
 npm run build
 npm start
 ```
+
+### CLI Mode
+
+CLI mode enables programmatic interaction with MCP servers from the command line, ideal for scripting, automation, and integration with coding assistants. This creates an efficient feedback loop for MCP server development.
+
+```bash
+npx @modelcontextprotocol/inspector --cli node build/index.js
+```
+
+The CLI mode supports most operations across tools, resources, and prompts. A few examples:
+
+```bash
+# Basic usage
+npx @modelcontextprotocol/inspector --cli node build/index.js
+
+# With config file
+npx @modelcontextprotocol/inspector --cli --config path/to/config.json --server myserver
+
+# List available tools
+npx @modelcontextprotocol/inspector --cli node build/index.js --method tools/list
+
+# Call a specific tool
+npx @modelcontextprotocol/inspector --cli node build/index.js --method tools/call --tool-name mytool --tool-arg key=value --tool-arg another=value2
+
+# List available resources
+npx @modelcontextprotocol/inspector --cli node build/index.js --method resources/list
+
+# List available prompts
+npx @modelcontextprotocol/inspector --cli node build/index.js --method prompts/list
+
+# Connect to a remote MCP server
+npx @modelcontextprotocol/inspector --cli https://my-mcp-server.example.com
+
+# Call a tool on a remote server
+npx @modelcontextprotocol/inspector --cli https://my-mcp-server.example.com --method tools/call --tool-name remotetool --tool-arg param=value
+
+# List resources from a remote server
+npx @modelcontextprotocol/inspector --cli https://my-mcp-server.example.com --method resources/list
+```
+
+### UI Mode vs CLI Mode: When to Use Each
+
+| Use Case                 | UI Mode                                                                   | CLI Mode                                                                                                                                             |
+| ------------------------ | ------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------- |
+| **Server Development**   | Visual interface for interactive testing and debugging during development | Scriptable commands for quick testing and continuous integration; creates feedback loops with AI coding assistants like Cursor for rapid development |
+| **Resource Exploration** | Interactive browser with hierarchical navigation and JSON visualization   | Programmatic listing and reading for automation and scripting                                                                                        |
+| **Tool Testing**         | Form-based parameter input with real-time response visualization          | Command-line tool execution with JSON output for scripting                                                                                           |
+| **Prompt Engineering**   | Interactive sampling with streaming responses and visual comparison       | Batch processing of prompts with machine-readable output                                                                                             |
+| **Debugging**            | Request history, visualized errors, and real-time notifications           | Direct JSON output for log analysis and integration with other tools                                                                                 |
+| **Automation**           | N/A                                                                       | Ideal for CI/CD pipelines, batch processing, and integration with coding assistants                                                                  |
+| **Learning MCP**         | Rich visual interface helps new users understand server capabilities      | Simplified commands for focused learning of specific endpoints                                                                                       |
+
+## License
+
+This project is licensed under the MIT License—see the [LICENSE](LICENSE) file for details.

SECURITY.md

@@ -0,0 +1,14 @@
+# Security Policy
+Thank you for helping us keep the inspector secure.
+
+## Reporting Security Issues
+
+This project is maintained by [Anthropic](https://www.anthropic.com/) as part of the Model Context Protocol project.
+
+The security of our systems and user data is Anthropic’s top priority. We appreciate the work of security researchers acting in good faith in identifying and reporting potential vulnerabilities.
+
+Our security program is managed on HackerOne and we ask that any validated vulnerability in this functionality be reported through their [submission form](https://hackerone.com/anthropic-vdp/reports/new?type=team&report_type=vulnerability).
+
+## Vulnerability Disclosure Program
+
+Our Vulnerability Program Guidelines are defined on our [HackerOne program page](https://hackerone.com/anthropic-vdp).

cli/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "@modelcontextprotocol/inspector-cli",
+  "version": "0.10.2",
+  "description": "CLI for the Model Context Protocol inspector",
+  "license": "MIT",
+  "author": "Anthropic, PBC (https://anthropic.com)",
+  "homepage": "https://modelcontextprotocol.io",
+  "bugs": "https://github.com/modelcontextprotocol/inspector/issues",
+  "main": "build/cli.js",
+  "type": "module",
+  "bin": {
+    "mcp-inspector-cli": "build/cli.js"
+  },
+  "files": [
+    "build"
+  ],
+  "scripts": {
+    "build": "tsc",
+    "postbuild": "node scripts/make-executable.js",
+    "test": "node scripts/cli-tests.js"
+  },
+  "devDependencies": {},
+  "dependencies": {
+    "@modelcontextprotocol/sdk": "^1.10.0",
+    "commander": "^13.1.0",
+    "spawn-rx": "^5.1.2"
+  }
+}

cli/scripts/cli-tests.js

@@ -0,0 +1,633 @@
+#!/usr/bin/env node
+
+// Colors for output
+const colors = {
+  GREEN: "\x1b[32m",
+  YELLOW: "\x1b[33m",
+  RED: "\x1b[31m",
+  BLUE: "\x1b[34m",
+  ORANGE: "\x1b[33m",
+  NC: "\x1b[0m", // No Color
+};
+
+import fs from "fs";
+import path from "path";
+import { execSync, spawn } from "child_process";
+import os from "os";
+import { fileURLToPath } from "url";
+
+// Get directory paths with ESM compatibility
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+// Track test results
+let PASSED_TESTS = 0;
+let FAILED_TESTS = 0;
+let SKIPPED_TESTS = 0;
+let TOTAL_TESTS = 0;
+
+console.log(
+  `${colors.YELLOW}=== MCP Inspector CLI Test Script ===${colors.NC}`,
+);
+console.log(
+  `${colors.BLUE}This script tests the MCP Inspector CLI's ability to handle various command line options:${colors.NC}`,
+);
+console.log(`${colors.BLUE}- Basic CLI mode${colors.NC}`);
+console.log(`${colors.BLUE}- Environment variables (-e)${colors.NC}`);
+console.log(`${colors.BLUE}- Config file (--config)${colors.NC}`);
+console.log(`${colors.BLUE}- Server selection (--server)${colors.NC}`);
+console.log(`${colors.BLUE}- Method selection (--method)${colors.NC}`);
+console.log(
+  `${colors.BLUE}- Tool-related options (--tool-name, --tool-arg)${colors.NC}`,
+);
+console.log(`${colors.BLUE}- Resource-related options (--uri)${colors.NC}`);
+console.log(
+  `${colors.BLUE}- Prompt-related options (--prompt-name, --prompt-args)${colors.NC}`,
+);
+console.log(`${colors.BLUE}- Logging options (--log-level)${colors.NC}\n`);
+
+// Get directory paths
+const SCRIPTS_DIR = __dirname;
+const PROJECT_ROOT = path.join(SCRIPTS_DIR, "../../");
+const BUILD_DIR = path.resolve(SCRIPTS_DIR, "../build");
+
+// Define the test server command using npx
+const TEST_CMD = "npx";
+const TEST_ARGS = ["@modelcontextprotocol/server-everything"];
+
+// Create output directory for test results
+const OUTPUT_DIR = path.join(SCRIPTS_DIR, "test-output");
+if (!fs.existsSync(OUTPUT_DIR)) {
+  fs.mkdirSync(OUTPUT_DIR, { recursive: true });
+}
+
+// Create a temporary directory for test files
+const TEMP_DIR = fs.mkdirSync(path.join(os.tmpdir(), "mcp-inspector-tests"), {
+  recursive: true,
+});
+
+process.on("exit", () => {
+  try {
+    fs.rmSync(TEMP_DIR, { recursive: true, force: true });
+  } catch (err) {
+    console.error(
+      `${colors.RED}Failed to remove temp directory: ${err.message}${colors.NC}`,
+    );
+  }
+});
+
+// Use the existing sample config file
+console.log(
+  `${colors.BLUE}Using existing sample config file: ${PROJECT_ROOT}/sample-config.json${colors.NC}`,
+);
+try {
+  const sampleConfig = fs.readFileSync(
+    path.join(PROJECT_ROOT, "sample-config.json"),
+    "utf8",
+  );
+  console.log(sampleConfig);
+} catch (error) {
+  console.error(
+    `${colors.RED}Error reading sample config: ${error.message}${colors.NC}`,
+  );
+}
+
+// Create an invalid config file for testing
+const invalidConfigPath = path.join(TEMP_DIR, "invalid-config.json");
+fs.writeFileSync(invalidConfigPath, '{\n  "mcpServers": {\n    "invalid": {');
+
+// Function to run a basic test
+async function runBasicTest(testName, ...args) {
+  const outputFile = path.join(
+    OUTPUT_DIR,
+    `${testName.replace(/\//g, "_")}.log`,
+  );
+
+  console.log(`\n${colors.YELLOW}Testing: ${testName}${colors.NC}`);
+  TOTAL_TESTS++;
+
+  // Run the command and capture output
+  console.log(
+    `${colors.BLUE}Command: node ${BUILD_DIR}/cli.js ${args.join(" ")}${colors.NC}`,
+  );
+
+  try {
+    // Create a write stream for the output file
+    const outputStream = fs.createWriteStream(outputFile);
+
+    // Spawn the process
+    return new Promise((resolve) => {
+      const child = spawn("node", [path.join(BUILD_DIR, "cli.js"), ...args], {
+        stdio: ["ignore", "pipe", "pipe"],
+      });
+
+      // Pipe stdout and stderr to the output file
+      child.stdout.pipe(outputStream);
+      child.stderr.pipe(outputStream);
+
+      // Also capture output for display
+      let output = "";
+      child.stdout.on("data", (data) => {
+        output += data.toString();
+      });
+      child.stderr.on("data", (data) => {
+        output += data.toString();
+      });
+
+      child.on("close", (code) => {
+        outputStream.end();
+
+        if (code === 0) {
+          console.log(`${colors.GREEN}✓ Test passed: ${testName}${colors.NC}`);
+          console.log(`${colors.BLUE}First few lines of output:${colors.NC}`);
+          const firstFewLines = output
+            .split("\n")
+            .slice(0, 5)
+            .map((line) => `  ${line}`)
+            .join("\n");
+          console.log(firstFewLines);
+          PASSED_TESTS++;
+          resolve(true);
+        } else {
+          console.log(`${colors.RED}✗ Test failed: ${testName}${colors.NC}`);
+          console.log(`${colors.RED}Error output:${colors.NC}`);
+          console.log(
+            output
+              .split("\n")
+              .map((line) => `  ${line}`)
+              .join("\n"),
+          );
+          FAILED_TESTS++;
+
+          // Stop after any error is encountered
+          console.log(
+            `${colors.YELLOW}Stopping tests due to error. Please validate and fix before continuing.${colors.NC}`,
+          );
+          process.exit(1);
+        }
+      });
+    });
+  } catch (error) {
+    console.error(
+      `${colors.RED}Error running test: ${error.message}${colors.NC}`,
+    );
+    FAILED_TESTS++;
+    process.exit(1);
+  }
+}
+
+// Function to run an error test (expected to fail)
+async function runErrorTest(testName, ...args) {
+  const outputFile = path.join(
+    OUTPUT_DIR,
+    `${testName.replace(/\//g, "_")}.log`,
+  );
+
+  console.log(`\n${colors.YELLOW}Testing error case: ${testName}${colors.NC}`);
+  TOTAL_TESTS++;
+
+  // Run the command and capture output
+  console.log(
+    `${colors.BLUE}Command: node ${BUILD_DIR}/cli.js ${args.join(" ")}${colors.NC}`,
+  );
+
+  try {
+    // Create a write stream for the output file
+    const outputStream = fs.createWriteStream(outputFile);
+
+    // Spawn the process
+    return new Promise((resolve) => {
+      const child = spawn("node", [path.join(BUILD_DIR, "cli.js"), ...args], {
+        stdio: ["ignore", "pipe", "pipe"],
+      });
+
+      // Pipe stdout and stderr to the output file
+      child.stdout.pipe(outputStream);
+      child.stderr.pipe(outputStream);
+
+      // Also capture output for display
+      let output = "";
+      child.stdout.on("data", (data) => {
+        output += data.toString();
+      });
+      child.stderr.on("data", (data) => {
+        output += data.toString();
+      });
+
+      child.on("close", (code) => {
+        outputStream.end();
+
+        // For error tests, we expect a non-zero exit code
+        if (code !== 0) {
+          console.log(
+            `${colors.GREEN}✓ Error test passed: ${testName}${colors.NC}`,
+          );
+          console.log(`${colors.BLUE}Error output (expected):${colors.NC}`);
+          const firstFewLines = output
+            .split("\n")
+            .slice(0, 5)
+            .map((line) => `  ${line}`)
+            .join("\n");
+          console.log(firstFewLines);
+          PASSED_TESTS++;
+          resolve(true);
+        } else {
+          console.log(
+            `${colors.RED}✗ Error test failed: ${testName} (expected error but got success)${colors.NC}`,
+          );
+          console.log(`${colors.RED}Output:${colors.NC}`);
+          console.log(
+            output
+              .split("\n")
+              .map((line) => `  ${line}`)
+              .join("\n"),
+          );
+          FAILED_TESTS++;
+
+          // Stop after any error is encountered
+          console.log(
+            `${colors.YELLOW}Stopping tests due to error. Please validate and fix before continuing.${colors.NC}`,
+          );
+          process.exit(1);
+        }
+      });
+    });
+  } catch (error) {
+    console.error(
+      `${colors.RED}Error running test: ${error.message}${colors.NC}`,
+    );
+    FAILED_TESTS++;
+    process.exit(1);
+  }
+}
+
+// Run all tests
+async function runTests() {
+  console.log(
+    `\n${colors.YELLOW}=== Running Basic CLI Mode Tests ===${colors.NC}`,
+  );
+
+  // Test 1: Basic CLI mode with method
+  await runBasicTest(
+    "basic_cli_mode",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 2: CLI mode with non-existent method (should fail)
+  await runErrorTest(
+    "nonexistent_method",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "nonexistent/method",
+  );
+
+  // Test 3: CLI mode without method (should fail)
+  await runErrorTest("missing_method", TEST_CMD, ...TEST_ARGS, "--cli");
+
+  console.log(
+    `\n${colors.YELLOW}=== Running Environment Variable Tests ===${colors.NC}`,
+  );
+
+  // Test 4: CLI mode with environment variables
+  await runBasicTest(
+    "env_variables",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "-e",
+    "KEY1=value1",
+    "-e",
+    "KEY2=value2",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 5: CLI mode with invalid environment variable format (should fail)
+  await runErrorTest(
+    "invalid_env_format",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "-e",
+    "INVALID_FORMAT",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 5b: CLI mode with environment variable containing equals sign in value
+  await runBasicTest(
+    "env_variable_with_equals",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "-e",
+    "API_KEY=abc123=xyz789==",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 5c: CLI mode with environment variable containing base64-encoded value
+  await runBasicTest(
+    "env_variable_with_base64",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "-e",
+    "JWT_TOKEN=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0=",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  console.log(
+    `\n${colors.YELLOW}=== Running Config File Tests ===${colors.NC}`,
+  );
+
+  // Test 6: Using config file with CLI mode
+  await runBasicTest(
+    "config_file",
+    "--config",
+    path.join(PROJECT_ROOT, "sample-config.json"),
+    "--server",
+    "everything",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 7: Using config file without server name (should fail)
+  await runErrorTest(
+    "config_without_server",
+    "--config",
+    path.join(PROJECT_ROOT, "sample-config.json"),
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 8: Using server name without config file (should fail)
+  await runErrorTest(
+    "server_without_config",
+    "--server",
+    "everything",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 9: Using non-existent config file (should fail)
+  await runErrorTest(
+    "nonexistent_config",
+    "--config",
+    "./nonexistent-config.json",
+    "--server",
+    "everything",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 10: Using invalid config file format (should fail)
+  await runErrorTest(
+    "invalid_config",
+    "--config",
+    invalidConfigPath,
+    "--server",
+    "everything",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 11: Using config file with non-existent server (should fail)
+  await runErrorTest(
+    "nonexistent_server",
+    "--config",
+    path.join(PROJECT_ROOT, "sample-config.json"),
+    "--server",
+    "nonexistent",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  console.log(
+    `\n${colors.YELLOW}=== Running Tool-Related Tests ===${colors.NC}`,
+  );
+
+  // Test 12: CLI mode with tool call
+  await runBasicTest(
+    "tool_call",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "tools/call",
+    "--tool-name",
+    "echo",
+    "--tool-arg",
+    "message=Hello",
+  );
+
+  // Test 13: CLI mode with tool call but missing tool name (should fail)
+  await runErrorTest(
+    "missing_tool_name",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "tools/call",
+    "--tool-arg",
+    "message=Hello",
+  );
+
+  // Test 14: CLI mode with tool call but invalid tool args format (should fail)
+  await runErrorTest(
+    "invalid_tool_args",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "tools/call",
+    "--tool-name",
+    "echo",
+    "--tool-arg",
+    "invalid_format",
+  );
+
+  // Test 15: CLI mode with multiple tool args
+  await runBasicTest(
+    "multiple_tool_args",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "tools/call",
+    "--tool-name",
+    "add",
+    "--tool-arg",
+    "a=1",
+    "b=2",
+  );
+
+  console.log(
+    `\n${colors.YELLOW}=== Running Resource-Related Tests ===${colors.NC}`,
+  );
+
+  // Test 16: CLI mode with resource read
+  await runBasicTest(
+    "resource_read",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "resources/read",
+    "--uri",
+    "test://static/resource/1",
+  );
+
+  // Test 17: CLI mode with resource read but missing URI (should fail)
+  await runErrorTest(
+    "missing_uri",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "resources/read",
+  );
+
+  console.log(
+    `\n${colors.YELLOW}=== Running Prompt-Related Tests ===${colors.NC}`,
+  );
+
+  // Test 18: CLI mode with prompt get
+  await runBasicTest(
+    "prompt_get",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "prompts/get",
+    "--prompt-name",
+    "simple_prompt",
+  );
+
+  // Test 19: CLI mode with prompt get and args
+  await runBasicTest(
+    "prompt_get_with_args",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "prompts/get",
+    "--prompt-name",
+    "complex_prompt",
+    "--prompt-args",
+    "temperature=0.7",
+    "style=concise",
+  );
+
+  // Test 20: CLI mode with prompt get but missing prompt name (should fail)
+  await runErrorTest(
+    "missing_prompt_name",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "prompts/get",
+  );
+
+  console.log(`\n${colors.YELLOW}=== Running Logging Tests ===${colors.NC}`);
+
+  // Test 21: CLI mode with log level
+  await runBasicTest(
+    "log_level",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "logging/setLevel",
+    "--log-level",
+    "debug",
+  );
+
+  // Test 22: CLI mode with invalid log level (should fail)
+  await runErrorTest(
+    "invalid_log_level",
+    TEST_CMD,
+    ...TEST_ARGS,
+    "--cli",
+    "--method",
+    "logging/setLevel",
+    "--log-level",
+    "invalid",
+  );
+
+  console.log(
+    `\n${colors.YELLOW}=== Running Combined Option Tests ===${colors.NC}`,
+  );
+
+  // Note about the combined options issue
+  console.log(
+    `${colors.BLUE}Testing combined options with environment variables and config file.${colors.NC}`,
+  );
+
+  // Test 23: CLI mode with config file, environment variables, and tool call
+  await runBasicTest(
+    "combined_options",
+    "--config",
+    path.join(PROJECT_ROOT, "sample-config.json"),
+    "--server",
+    "everything",
+    "-e",
+    "CLI_ENV_VAR=cli_value",
+    "--cli",
+    "--method",
+    "tools/list",
+  );
+
+  // Test 24: CLI mode with all possible options (that make sense together)
+  await runBasicTest(
+    "all_options",
+    "--config",
+    path.join(PROJECT_ROOT, "sample-config.json"),
+    "--server",
+    "everything",
+    "-e",
+    "CLI_ENV_VAR=cli_value",
+    "--cli",
+    "--method",
+    "tools/call",
+    "--tool-name",
+    "echo",
+    "--tool-arg",
+    "message=Hello",
+    "--log-level",
+    "debug",
+  );
+
+  // Print test summary
+  console.log(`\n${colors.YELLOW}=== Test Summary ===${colors.NC}`);
+  console.log(`${colors.GREEN}Passed: ${PASSED_TESTS}${colors.NC}`);
+  console.log(`${colors.RED}Failed: ${FAILED_TESTS}${colors.NC}`);
+  console.log(`${colors.ORANGE}Skipped: ${SKIPPED_TESTS}${colors.NC}`);
+  console.log(`Total: ${TOTAL_TESTS}`);
+  console.log(
+    `${colors.BLUE}Detailed logs saved to: ${OUTPUT_DIR}${colors.NC}`,
+  );
+
+  console.log(`\n${colors.GREEN}All tests completed!${colors.NC}`);
+}
+
+// Run all tests
+runTests().catch((error) => {
+  console.error(
+    `${colors.RED}Tests failed with error: ${error.message}${colors.NC}`,
+  );
+  process.exit(1);
+});

cli/scripts/make-executable.js

@@ -0,0 +1,29 @@
+/**
+ * Cross-platform script to make a file executable
+ */
+import { promises as fs } from "fs";
+import { platform } from "os";
+import { execSync } from "child_process";
+import path from "path";
+
+const TARGET_FILE = path.resolve("build/cli.js");
+
+async function makeExecutable() {
+  try {
+    // On Unix-like systems (Linux, macOS), use chmod
+    if (platform() !== "win32") {
+      execSync(`chmod +x "${TARGET_FILE}"`);
+      console.log("Made file executable with chmod");
+    } else {
+      // On Windows, no need to make files "executable" in the Unix sense
+      // Just ensure the file exists
+      await fs.access(TARGET_FILE);
+      console.log("File exists and is accessible on Windows");
+    }
+  } catch (error) {
+    console.error("Error making file executable:", error);
+    process.exit(1);
+  }
+}
+
+makeExecutable();

cli/src/cli.ts

@@ -0,0 +1,287 @@
+#!/usr/bin/env node
+
+import { Command } from "commander";
+import fs from "node:fs";
+import path from "node:path";
+import { dirname, resolve } from "path";
+import { spawnPromise } from "spawn-rx";
+import { fileURLToPath } from "url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+type Args = {
+  command: string;
+  args: string[];
+  envArgs: Record<string, string>;
+  cli: boolean;
+};
+
+type CliOptions = {
+  e?: Record<string, string>;
+  config?: string;
+  server?: string;
+  cli?: boolean;
+};
+
+type ServerConfig = {
+  command: string;
+  args?: string[];
+  env?: Record<string, string>;
+};
+
+function handleError(error: unknown): never {
+  let message: string;
+
+  if (error instanceof Error) {
+    message = error.message;
+  } else if (typeof error === "string") {
+    message = error;
+  } else {
+    message = "Unknown error";
+  }
+
+  console.error(message);
+
+  process.exit(1);
+}
+
+function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms, true));
+}
+
+async function runWebClient(args: Args): Promise<void> {
+  const inspectorServerPath = resolve(
+    __dirname,
+    "../../",
+    "server",
+    "build",
+    "index.js",
+  );
+
+  // Path to the client entry point
+  const inspectorClientPath = resolve(
+    __dirname,
+    "../../",
+    "client",
+    "bin",
+    "client.js",
+  );
+
+  const CLIENT_PORT: string = process.env.CLIENT_PORT ?? "6274";
+  const SERVER_PORT: string = process.env.SERVER_PORT ?? "6277";
+
+  console.log("Starting MCP inspector...");
+
+  const abort = new AbortController();
+  let cancelled: boolean = false;
+  process.on("SIGINT", () => {
+    cancelled = true;
+    abort.abort();
+  });
+
+  let server: ReturnType<typeof spawnPromise>;
+  let serverOk: unknown;
+
+  try {
+    server = spawnPromise(
+      "node",
+      [
+        inspectorServerPath,
+        ...(args.command ? [`--env`, args.command] : []),
+        ...(args.args ? [`--args=${args.args.join(" ")}`] : []),
+      ],
+      {
+        env: {
+          ...process.env,
+          PORT: SERVER_PORT,
+          MCP_ENV_VARS: JSON.stringify(args.envArgs),
+        },
+        signal: abort.signal,
+        echoOutput: true,
+      },
+    );
+
+    // Make sure server started before starting client
+    serverOk = await Promise.race([server, delay(2 * 1000)]);
+  } catch (error) {}
+
+  if (serverOk) {
+    try {
+      await spawnPromise("node", [inspectorClientPath], {
+        env: { ...process.env, PORT: CLIENT_PORT },
+        signal: abort.signal,
+        echoOutput: true,
+      });
+    } catch (e) {
+      if (!cancelled || process.env.DEBUG) throw e;
+    }
+  }
+}
+
+async function runCli(args: Args): Promise<void> {
+  const projectRoot = resolve(__dirname, "..");
+  const cliPath = resolve(projectRoot, "build", "index.js");
+
+  const abort = new AbortController();
+
+  let cancelled = false;
+
+  process.on("SIGINT", () => {
+    cancelled = true;
+    abort.abort();
+  });
+
+  try {
+    await spawnPromise("node", [cliPath, args.command, ...args.args], {
+      env: { ...process.env, ...args.envArgs },
+      signal: abort.signal,
+      echoOutput: true,
+    });
+  } catch (e) {
+    if (!cancelled || process.env.DEBUG) {
+      throw e;
+    }
+  }
+}
+
+function loadConfigFile(configPath: string, serverName: string): ServerConfig {
+  try {
+    const resolvedConfigPath = path.isAbsolute(configPath)
+      ? configPath
+      : path.resolve(process.cwd(), configPath);
+
+    if (!fs.existsSync(resolvedConfigPath)) {
+      throw new Error(`Config file not found: ${resolvedConfigPath}`);
+    }
+
+    const configContent = fs.readFileSync(resolvedConfigPath, "utf8");
+    const parsedConfig = JSON.parse(configContent);
+
+    if (!parsedConfig.mcpServers || !parsedConfig.mcpServers[serverName]) {
+      const availableServers = Object.keys(parsedConfig.mcpServers || {}).join(
+        ", ",
+      );
+      throw new Error(
+        `Server '${serverName}' not found in config file. Available servers: ${availableServers}`,
+      );
+    }
+
+    const serverConfig = parsedConfig.mcpServers[serverName];
+
+    return serverConfig;
+  } catch (err: unknown) {
+    if (err instanceof SyntaxError) {
+      throw new Error(`Invalid JSON in config file: ${err.message}`);
+    }
+
+    throw err;
+  }
+}
+
+function parseKeyValuePair(
+  value: string,
+  previous: Record<string, string> = {},
+): Record<string, string> {
+  const parts = value.split("=");
+  const key = parts[0];
+  const val = parts.slice(1).join("=");
+
+  if (val === undefined || val === "") {
+    throw new Error(
+      `Invalid parameter format: ${value}. Use key=value format.`,
+    );
+  }
+
+  return { ...previous, [key as string]: val };
+}
+
+function parseArgs(): Args {
+  const program = new Command();
+
+  const argSeparatorIndex = process.argv.indexOf("--");
+  let preArgs = process.argv;
+  let postArgs: string[] = [];
+
+  if (argSeparatorIndex !== -1) {
+    preArgs = process.argv.slice(0, argSeparatorIndex);
+    postArgs = process.argv.slice(argSeparatorIndex + 1);
+  }
+
+  program
+    .name("inspector-bin")
+    .allowExcessArguments()
+    .allowUnknownOption()
+    .option(
+      "-e <env>",
+      "environment variables in KEY=VALUE format",
+      parseKeyValuePair,
+      {},
+    )
+    .option("--config <path>", "config file path")
+    .option("--server <n>", "server name from config file")
+    .option("--cli", "enable CLI mode");
+
+  // Parse only the arguments before --
+  program.parse(preArgs);
+
+  const options = program.opts() as CliOptions;
+  const remainingArgs = program.args;
+
+  // Add back any arguments that came after --
+  const finalArgs = [...remainingArgs, ...postArgs];
+
+  // Validate that config and server are provided together
+  if (
+    (options.config && !options.server) ||
+    (!options.config && options.server)
+  ) {
+    throw new Error(
+      "Both --config and --server must be provided together. If you specify one, you must specify the other.",
+    );
+  }
+
+  // If config file is specified, load and use the options from the file. We must merge the args
+  // from the command line and the file together, or we will miss the method options (--method,
+  // etc.)
+  if (options.config && options.server) {
+    const config = loadConfigFile(options.config, options.server);
+
+    return {
+      command: config.command,
+      args: [...(config.args || []), ...finalArgs],
+      envArgs: { ...(config.env || {}), ...(options.e || {}) },
+      cli: options.cli || false,
+    };
+  }
+
+  // Otherwise use command line arguments
+  const command = finalArgs[0] || "";
+  const args = finalArgs.slice(1);
+
+  return {
+    command,
+    args,
+    envArgs: options.e || {},
+    cli: options.cli || false,
+  };
+}
+
+async function main(): Promise<void> {
+  process.on("uncaughtException", (error) => {
+    handleError(error);
+  });
+
+  try {
+    const args = parseArgs();
+
+    if (args.cli) {
+      runCli(args);
+    } else {
+      await runWebClient(args);
+    }
+  } catch (error) {
+    handleError(error);
+  }
+}
+
+main();

cli/src/client/connection.ts

@@ -0,0 +1,51 @@
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import type { Transport } from "@modelcontextprotocol/sdk/shared/transport.js";
+import { McpResponse } from "./types.js";
+
+export const validLogLevels = [
+  "trace",
+  "debug",
+  "info",
+  "warn",
+  "error",
+] as const;
+
+export type LogLevel = (typeof validLogLevels)[number];
+
+export async function connect(
+  client: Client,
+  transport: Transport,
+): Promise<void> {
+  try {
+    await client.connect(transport);
+  } catch (error) {
+    throw new Error(
+      `Failed to connect to MCP server: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}
+
+export async function disconnect(transport: Transport): Promise<void> {
+  try {
+    await transport.close();
+  } catch (error) {
+    throw new Error(
+      `Failed to disconnect from MCP server: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}
+
+// Set logging level
+export async function setLoggingLevel(
+  client: Client,
+  level: LogLevel,
+): Promise<McpResponse> {
+  try {
+    const response = await client.setLoggingLevel(level as any);
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to set logging level: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}

cli/src/client/index.ts

@@ -0,0 +1,6 @@
+// Re-export everything from the client modules
+export * from "./connection.js";
+export * from "./prompts.js";
+export * from "./resources.js";
+export * from "./tools.js";
+export * from "./types.js";

cli/src/client/prompts.ts

@@ -0,0 +1,34 @@
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import { McpResponse } from "./types.js";
+
+// List available prompts
+export async function listPrompts(client: Client): Promise<McpResponse> {
+  try {
+    const response = await client.listPrompts();
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to list prompts: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}
+
+// Get a prompt
+export async function getPrompt(
+  client: Client,
+  name: string,
+  args?: Record<string, string>,
+): Promise<McpResponse> {
+  try {
+    const response = await client.getPrompt({
+      name,
+      arguments: args || {},
+    });
+
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to get prompt: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}

cli/src/client/resources.ts

@@ -0,0 +1,43 @@
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import { McpResponse } from "./types.js";
+
+// List available resources
+export async function listResources(client: Client): Promise<McpResponse> {
+  try {
+    const response = await client.listResources();
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to list resources: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}
+
+// Read a resource
+export async function readResource(
+  client: Client,
+  uri: string,
+): Promise<McpResponse> {
+  try {
+    const response = await client.readResource({ uri });
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to read resource ${uri}: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}
+
+// List resource templates
+export async function listResourceTemplates(
+  client: Client,
+): Promise<McpResponse> {
+  try {
+    const response = await client.listResourceTemplates();
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to list resource templates: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}

cli/src/client/tools.ts

@@ -0,0 +1,95 @@
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import { Tool } from "@modelcontextprotocol/sdk/types.js";
+import { McpResponse } from "./types.js";
+
+type JsonSchemaType = {
+  type: "string" | "number" | "integer" | "boolean" | "array" | "object";
+  description?: string;
+  properties?: Record<string, JsonSchemaType>;
+  items?: JsonSchemaType;
+};
+
+export async function listTools(client: Client): Promise<McpResponse> {
+  try {
+    const response = await client.listTools();
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to list tools: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}
+
+function convertParameterValue(value: string, schema: JsonSchemaType): unknown {
+  if (!value) {
+    return value;
+  }
+
+  if (schema.type === "number" || schema.type === "integer") {
+    return Number(value);
+  }
+
+  if (schema.type === "boolean") {
+    return value.toLowerCase() === "true";
+  }
+
+  if (schema.type === "object" || schema.type === "array") {
+    try {
+      return JSON.parse(value);
+    } catch (error) {
+      return value;
+    }
+  }
+
+  return value;
+}
+
+function convertParameters(
+  tool: Tool,
+  params: Record<string, string>,
+): Record<string, unknown> {
+  const result: Record<string, unknown> = {};
+  const properties = tool.inputSchema.properties || {};
+
+  for (const [key, value] of Object.entries(params)) {
+    const paramSchema = properties[key] as JsonSchemaType | undefined;
+
+    if (paramSchema) {
+      result[key] = convertParameterValue(value, paramSchema);
+    } else {
+      // If no schema is found for this parameter, keep it as string
+      result[key] = value;
+    }
+  }
+
+  return result;
+}
+
+export async function callTool(
+  client: Client,
+  name: string,
+  args: Record<string, string>,
+): Promise<McpResponse> {
+  try {
+    const toolsResponse = await listTools(client);
+    const tools = toolsResponse.tools as Tool[];
+    const tool = tools.find((t) => t.name === name);
+
+    let convertedArgs: Record<string, unknown> = args;
+
+    if (tool) {
+      // Convert parameters based on the tool's schema
+      convertedArgs = convertParameters(tool, args);
+    }
+
+    const response = await client.callTool({
+      name: name,
+      arguments: convertedArgs,
+    });
+    return response;
+  } catch (error) {
+    throw new Error(
+      `Failed to call tool ${name}: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}

cli/src/client/types.ts

@@ -0,0 +1 @@
+export type McpResponse = Record<string, unknown>;

cli/src/error-handler.ts

@@ -0,0 +1,20 @@
+function formatError(error: unknown): string {
+  let message: string;
+
+  if (error instanceof Error) {
+    message = error.message;
+  } else if (typeof error === "string") {
+    message = error;
+  } else {
+    message = "Unknown error";
+  }
+
+  return message;
+}
+
+export function handleError(error: unknown): never {
+  const errorMessage = formatError(error);
+  console.error(errorMessage);
+
+  process.exit(1);
+}

cli/src/index.ts

@@ -0,0 +1,253 @@
+#!/usr/bin/env node
+
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import { Command } from "commander";
+import {
+  callTool,
+  connect,
+  disconnect,
+  getPrompt,
+  listPrompts,
+  listResources,
+  listResourceTemplates,
+  listTools,
+  LogLevel,
+  McpResponse,
+  readResource,
+  setLoggingLevel,
+  validLogLevels,
+} from "./client/index.js";
+import { handleError } from "./error-handler.js";
+import { createTransport, TransportOptions } from "./transport.js";
+
+type Args = {
+  target: string[];
+  method?: string;
+  promptName?: string;
+  promptArgs?: Record<string, string>;
+  uri?: string;
+  logLevel?: LogLevel;
+  toolName?: string;
+  toolArg?: Record<string, string>;
+};
+
+function createTransportOptions(target: string[]): TransportOptions {
+  if (target.length === 0) {
+    throw new Error(
+      "Target is required. Specify a URL or a command to execute.",
+    );
+  }
+
+  const [command, ...commandArgs] = target;
+
+  if (!command) {
+    throw new Error("Command is required.");
+  }
+
+  const isUrl = command.startsWith("http://") || command.startsWith("https://");
+
+  if (isUrl && commandArgs.length > 0) {
+    throw new Error("Arguments cannot be passed to a URL-based MCP server.");
+  }
+
+  return {
+    transportType: isUrl ? "sse" : "stdio",
+    command: isUrl ? undefined : command,
+    args: isUrl ? undefined : commandArgs,
+    url: isUrl ? command : undefined,
+  };
+}
+
+async function callMethod(args: Args): Promise<void> {
+  const transportOptions = createTransportOptions(args.target);
+  const transport = createTransport(transportOptions);
+  const client = new Client({
+    name: "inspector-cli",
+    version: "0.5.1",
+  });
+
+  try {
+    await connect(client, transport);
+
+    let result: McpResponse;
+
+    // Tools methods
+    if (args.method === "tools/list") {
+      result = await listTools(client);
+    } else if (args.method === "tools/call") {
+      if (!args.toolName) {
+        throw new Error(
+          "Tool name is required for tools/call method. Use --tool-name to specify the tool name.",
+        );
+      }
+
+      result = await callTool(client, args.toolName, args.toolArg || {});
+    }
+    // Resources methods
+    else if (args.method === "resources/list") {
+      result = await listResources(client);
+    } else if (args.method === "resources/read") {
+      if (!args.uri) {
+        throw new Error(
+          "URI is required for resources/read method. Use --uri to specify the resource URI.",
+        );
+      }
+
+      result = await readResource(client, args.uri);
+    } else if (args.method === "resources/templates/list") {
+      result = await listResourceTemplates(client);
+    }
+    // Prompts methods
+    else if (args.method === "prompts/list") {
+      result = await listPrompts(client);
+    } else if (args.method === "prompts/get") {
+      if (!args.promptName) {
+        throw new Error(
+          "Prompt name is required for prompts/get method. Use --prompt-name to specify the prompt name.",
+        );
+      }
+
+      result = await getPrompt(client, args.promptName, args.promptArgs || {});
+    }
+    // Logging methods
+    else if (args.method === "logging/setLevel") {
+      if (!args.logLevel) {
+        throw new Error(
+          "Log level is required for logging/setLevel method. Use --log-level to specify the log level.",
+        );
+      }
+
+      result = await setLoggingLevel(client, args.logLevel);
+    } else {
+      throw new Error(
+        `Unsupported method: ${args.method}. Supported methods include: tools/list, tools/call, resources/list, resources/read, resources/templates/list, prompts/list, prompts/get, logging/setLevel`,
+      );
+    }
+
+    console.log(JSON.stringify(result, null, 2));
+  } finally {
+    try {
+      await disconnect(transport);
+    } catch (disconnectError) {
+      throw disconnectError;
+    }
+  }
+}
+
+function parseKeyValuePair(
+  value: string,
+  previous: Record<string, string> = {},
+): Record<string, string> {
+  const parts = value.split("=");
+  const key = parts[0];
+  const val = parts.slice(1).join("=");
+
+  if (val === undefined || val === "") {
+    throw new Error(
+      `Invalid parameter format: ${value}. Use key=value format.`,
+    );
+  }
+
+  return { ...previous, [key as string]: val };
+}
+
+function parseArgs(): Args {
+  const program = new Command();
+
+  // Find if there's a -- in the arguments and split them
+  const argSeparatorIndex = process.argv.indexOf("--");
+  let preArgs = process.argv;
+  let postArgs: string[] = [];
+
+  if (argSeparatorIndex !== -1) {
+    preArgs = process.argv.slice(0, argSeparatorIndex);
+    postArgs = process.argv.slice(argSeparatorIndex + 1);
+  }
+
+  program
+    .name("inspector-cli")
+    .allowUnknownOption()
+    .argument("<target...>", "Command and arguments or URL of the MCP server")
+    //
+    // Method selection
+    //
+    .option("--method <method>", "Method to invoke")
+    //
+    // Tool-related options
+    //
+    .option("--tool-name <toolName>", "Tool name (for tools/call method)")
+    .option(
+      "--tool-arg <pairs...>",
+      "Tool argument as key=value pair",
+      parseKeyValuePair,
+      {},
+    )
+    //
+    // Resource-related options
+    //
+    .option("--uri <uri>", "URI of the resource (for resources/read method)")
+    //
+    // Prompt-related options
+    //
+    .option(
+      "--prompt-name <promptName>",
+      "Name of the prompt (for prompts/get method)",
+    )
+    .option(
+      "--prompt-args <pairs...>",
+      "Prompt arguments as key=value pairs",
+      parseKeyValuePair,
+      {},
+    )
+    //
+    // Logging options
+    //
+    .option(
+      "--log-level <level>",
+      "Logging level (for logging/setLevel method)",
+      (value: string) => {
+        if (!validLogLevels.includes(value as any)) {
+          throw new Error(
+            `Invalid log level: ${value}. Valid levels are: ${validLogLevels.join(", ")}`,
+          );
+        }
+
+        return value as LogLevel;
+      },
+    );
+
+  // Parse only the arguments before --
+  program.parse(preArgs);
+
+  const options = program.opts() as Omit<Args, "target">;
+  let remainingArgs = program.args;
+
+  // Add back any arguments that came after --
+  const finalArgs = [...remainingArgs, ...postArgs];
+
+  if (!options.method) {
+    throw new Error(
+      "Method is required. Use --method to specify the method to invoke.",
+    );
+  }
+
+  return {
+    target: finalArgs,
+    ...options,
+  };
+}
+
+async function main(): Promise<void> {
+  process.on("uncaughtException", (error) => {
+    handleError(error);
+  });
+
+  try {
+    const args = parseArgs();
+    await callMethod(args);
+  } catch (error) {
+    handleError(error);
+  }
+}
+
+main();

cli/src/transport.ts

@@ -0,0 +1,76 @@
+import { SSEClientTransport } from "@modelcontextprotocol/sdk/client/sse.js";
+import {
+  getDefaultEnvironment,
+  StdioClientTransport,
+} from "@modelcontextprotocol/sdk/client/stdio.js";
+import type { Transport } from "@modelcontextprotocol/sdk/shared/transport.js";
+import { findActualExecutable } from "spawn-rx";
+
+export type TransportOptions = {
+  transportType: "sse" | "stdio";
+  command?: string;
+  args?: string[];
+  url?: string;
+};
+
+function createSSETransport(options: TransportOptions): Transport {
+  const baseUrl = new URL(options.url ?? "");
+  const sseUrl = new URL("/sse", baseUrl);
+
+  return new SSEClientTransport(sseUrl);
+}
+
+function createStdioTransport(options: TransportOptions): Transport {
+  let args: string[] = [];
+
+  if (options.args !== undefined) {
+    args = options.args;
+  }
+
+  const processEnv: Record<string, string> = {};
+
+  for (const [key, value] of Object.entries(process.env)) {
+    if (value !== undefined) {
+      processEnv[key] = value;
+    }
+  }
+
+  const defaultEnv = getDefaultEnvironment();
+
+  const env: Record<string, string> = {
+    ...processEnv,
+    ...defaultEnv,
+  };
+
+  const { cmd: actualCommand, args: actualArgs } = findActualExecutable(
+    options.command ?? "",
+    args,
+  );
+
+  return new StdioClientTransport({
+    command: actualCommand,
+    args: actualArgs,
+    env,
+    stderr: "pipe",
+  });
+}
+
+export function createTransport(options: TransportOptions): Transport {
+  const { transportType } = options;
+
+  try {
+    if (transportType === "stdio") {
+      return createStdioTransport(options);
+    }
+
+    if (transportType === "sse") {
+      return createSSETransport(options);
+    }
+
+    throw new Error(`Unsupported transport type: ${transportType}`);
+  } catch (error) {
+    throw new Error(
+      `Failed to create transport: ${error instanceof Error ? error.message : String(error)}`,
+    );
+  }
+}

cli/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "outDir": "./build",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "noUncheckedIndexedAccess": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "packages", "**/*.spec.ts", "build"]
+}

client/bin/client.js

@@ -0,0 +1,33 @@
+#!/usr/bin/env node
+
+import { join, dirname } from "path";
+import { fileURLToPath } from "url";
+import handler from "serve-handler";
+import http from "http";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const distPath = join(__dirname, "../dist");
+
+const server = http.createServer((request, response) => {
+  return handler(request, response, {
+    public: distPath,
+    rewrites: [{ source: "/**", destination: "/index.html" }],
+  });
+});
+
+const port = process.env.PORT || 6274;
+server.on("listening", () => {
+  console.log(
+    `🔍 MCP Inspector is up and running at http://127.0.0.1:${port} 🚀`,
+  );
+});
+server.on("error", (err) => {
+  if (err.message.includes(`EADDRINUSE`)) {
+    console.error(
+      `❌  MCP Inspector PORT IS IN USE at http://127.0.0.1:${port} ❌ `,
+    );
+  } else {
+    throw err;
+  }
+});
+server.listen(port);

client/bin/start.js

@@ -0,0 +1,120 @@
+#!/usr/bin/env node
+
+import { resolve, dirname } from "path";
+import { spawnPromise } from "spawn-rx";
+import { fileURLToPath } from "url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+function delay(ms) {
+  return new Promise((resolve) => setTimeout(resolve, ms, true));
+}
+
+async function main() {
+  // Parse command line arguments
+  const args = process.argv.slice(2);
+  const envVars = {};
+  const mcpServerArgs = [];
+  let command = null;
+  let parsingFlags = true;
+
+  for (let i = 0; i < args.length; i++) {
+    const arg = args[i];
+
+    if (parsingFlags && arg === "--") {
+      parsingFlags = false;
+      continue;
+    }
+
+    if (parsingFlags && arg === "-e" && i + 1 < args.length) {
+      const envVar = args[++i];
+      const equalsIndex = envVar.indexOf("=");
+
+      if (equalsIndex !== -1) {
+        const key = envVar.substring(0, equalsIndex);
+        const value = envVar.substring(equalsIndex + 1);
+        envVars[key] = value;
+      } else {
+        envVars[envVar] = "";
+      }
+    } else if (!command) {
+      command = arg;
+    } else {
+      mcpServerArgs.push(arg);
+    }
+  }
+
+  const inspectorServerPath = resolve(
+    __dirname,
+    "../..",
+    "server",
+    "build",
+    "index.js",
+  );
+
+  // Path to the client entry point
+  const inspectorClientPath = resolve(
+    __dirname,
+    "../..",
+    "client",
+    "bin",
+    "client.js",
+  );
+
+  const CLIENT_PORT = process.env.CLIENT_PORT ?? "6274";
+  const SERVER_PORT = process.env.SERVER_PORT ?? "6277";
+
+  console.log("Starting MCP inspector...");
+
+  const abort = new AbortController();
+
+  let cancelled = false;
+  process.on("SIGINT", () => {
+    cancelled = true;
+    abort.abort();
+  });
+  let server, serverOk;
+  try {
+    server = spawnPromise(
+      "node",
+      [
+        inspectorServerPath,
+        ...(command ? [`--env`, command] : []),
+        ...(mcpServerArgs ? [`--args=${mcpServerArgs.join(" ")}`] : []),
+      ],
+      {
+        env: {
+          ...process.env,
+          PORT: SERVER_PORT,
+          MCP_ENV_VARS: JSON.stringify(envVars),
+        },
+        signal: abort.signal,
+        echoOutput: true,
+      },
+    );
+
+    // Make sure server started before starting client
+    serverOk = await Promise.race([server, delay(2 * 1000)]);
+  } catch (error) {}
+
+  if (serverOk) {
+    try {
+      await spawnPromise("node", [inspectorClientPath], {
+        env: { ...process.env, PORT: CLIENT_PORT },
+        signal: abort.signal,
+        echoOutput: true,
+      });
+    } catch (e) {
+      if (!cancelled || process.env.DEBUG) throw e;
+    }
+  }
+
+  return 0;
+}
+
+main()
+  .then((_) => process.exit(0))
+  .catch((e) => {
+    console.error(e);
+    process.exit(1);
+  });

client/components.json

@@ -17,4 +17,4 @@
     "lib": "@/lib",
     "hooks": "@/hooks"
   }
-}
+}

client/index.html

@@ -2,7 +2,7 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <link rel="icon" type="image/svg+xml" href="/mcp.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>MCP Inspector</title>
   </head>

client/jest.config.cjs

@@ -0,0 +1,33 @@
+module.exports = {
+  preset: "ts-jest",
+  testEnvironment: "jest-fixed-jsdom",
+  moduleNameMapper: {
+    "^@/(.*)$": "<rootDir>/src/$1",
+    "\\.css$": "<rootDir>/src/__mocks__/styleMock.js",
+  },
+  transform: {
+    "^.+\\.tsx?$": [
+      "ts-jest",
+      {
+        jsx: "react-jsx",
+        tsconfig: "tsconfig.jest.json",
+      },
+    ],
+  },
+  extensionsToTreatAsEsm: [".ts", ".tsx"],
+  testRegex: "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
+  // Exclude directories and files that don't need to be tested
+  testPathIgnorePatterns: [
+    "/node_modules/",
+    "/dist/",
+    "/bin/",
+    "\\.config\\.(js|ts|cjs|mjs)$",
+  ],
+  // Exclude the same patterns from coverage reports
+  coveragePathIgnorePatterns: [
+    "/node_modules/",
+    "/dist/",
+    "/bin/",
+    "\\.config\\.(js|ts|cjs|mjs)$",
+  ],
+};

client/package.json

@@ -1,45 +1,77 @@
 {
-  "name": "client",
-  "private": true,
-  "version": "0.0.0",
+  "name": "@modelcontextprotocol/inspector-client",
+  "version": "0.10.2",
+  "description": "Client-side application for the Model Context Protocol inspector",
+  "license": "MIT",
+  "author": "Anthropic, PBC (https://anthropic.com)",
+  "homepage": "https://modelcontextprotocol.io",
+  "bugs": "https://github.com/modelcontextprotocol/inspector/issues",
   "type": "module",
+  "bin": {
+    "mcp-inspector-client": "./bin/start.js"
+  },
+  "files": [
+    "bin",
+    "dist"
+  ],
   "scripts": {
-    "dev": "vite",
+    "dev": "vite --port 6274",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
-    "preview": "vite preview"
+    "preview": "vite preview --port 6274",
+    "test": "jest --config jest.config.cjs",
+    "test:watch": "jest --config jest.config.cjs --watch"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "*",
+    "@modelcontextprotocol/sdk": "^1.10.0",
+    "@radix-ui/react-checkbox": "^1.1.4",
+    "@radix-ui/react-dialog": "^1.1.3",
     "@radix-ui/react-icons": "^1.3.0",
     "@radix-ui/react-label": "^2.1.0",
+    "@radix-ui/react-popover": "^1.1.3",
     "@radix-ui/react-select": "^2.1.2",
     "@radix-ui/react-slot": "^1.1.0",
     "@radix-ui/react-tabs": "^1.1.1",
+    "@radix-ui/react-toast": "^1.2.6",
+    "@radix-ui/react-tooltip": "^1.1.8",
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.1.1",
+    "cmdk": "^1.0.4",
     "lucide-react": "^0.447.0",
+    "pkce-challenge": "^4.1.0",
+    "prismjs": "^1.30.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-simple-code-editor": "^0.14.1",
+    "serve-handler": "^6.1.6",
     "tailwind-merge": "^2.5.3",
     "tailwindcss-animate": "^1.0.7",
     "zod": "^3.23.8"
   },
   "devDependencies": {
     "@eslint/js": "^9.11.1",
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/react": "^16.2.0",
+    "@types/jest": "^29.5.14",
     "@types/node": "^22.7.5",
+    "@types/prismjs": "^1.26.5",
     "@types/react": "^18.3.10",
     "@types/react-dom": "^18.3.0",
+    "@types/serve-handler": "^6.1.4",
     "@vitejs/plugin-react": "^4.3.2",
     "autoprefixer": "^10.4.20",
+    "co": "^4.6.0",
     "eslint": "^9.11.1",
     "eslint-plugin-react-hooks": "^5.1.0-rc.0",
     "eslint-plugin-react-refresh": "^0.4.12",
     "globals": "^15.9.0",
+    "jest": "^29.7.0",
+    "jest-environment-jsdom": "^29.7.0",
     "postcss": "^8.4.47",
     "tailwindcss": "^3.4.13",
+    "ts-jest": "^29.2.6",
     "typescript": "^5.5.3",
     "typescript-eslint": "^8.7.0",
-    "vite": "^5.4.8"
+    "vite": "^6.3.0"
   }
 }

client/postcss.config.js

@@ -3,4 +3,4 @@ export default {
     tailwindcss: {},
     autoprefixer: {},
   },
-}
+};

client/public/mcp.svg

@@ -0,0 +1,12 @@
+<svg width="180" height="180" viewBox="0 0 180 180" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_19_13)">
+<path d="M18 84.8528L85.8822 16.9706C95.2548 7.59798 110.451 7.59798 119.823 16.9706V16.9706C129.196 26.3431 129.196 41.5391 119.823 50.9117L68.5581 102.177" stroke="black" stroke-width="12" stroke-linecap="round"/>
+<path d="M69.2652 101.47L119.823 50.9117C129.196 41.5391 144.392 41.5391 153.765 50.9117L154.118 51.2652C163.491 60.6378 163.491 75.8338 154.118 85.2063L92.7248 146.6C89.6006 149.724 89.6006 154.789 92.7248 157.913L105.331 170.52" stroke="black" stroke-width="12" stroke-linecap="round"/>
+<path d="M102.853 33.9411L52.6482 84.1457C43.2756 93.5183 43.2756 108.714 52.6482 118.087V118.087C62.0208 127.459 77.2167 127.459 86.5893 118.087L136.794 67.8822" stroke="black" stroke-width="12" stroke-linecap="round"/>
+</g>
+<defs>
+<clipPath id="clip0_19_13">
+<rect width="180" height="180" fill="white"/>
+</clipPath>
+</defs>
+</svg>

client/public/vite.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

client/src/App.tsx

@@ -1,83 +1,132 @@
-import { Client } from "@modelcontextprotocol/sdk/client/index.js";
-import { SSEClientTransport } from "@modelcontextprotocol/sdk/client/sse.js";
 import {
-  CallToolResultSchema,
   ClientRequest,
-  CreateMessageRequestSchema,
+  CompatibilityCallToolResult,
+  CompatibilityCallToolResultSchema,
   CreateMessageResult,
   EmptyResultSchema,
   GetPromptResultSchema,
   ListPromptsResultSchema,
   ListResourcesResultSchema,
+  ListResourceTemplatesResultSchema,
   ListToolsResultSchema,
-  ProgressNotificationSchema,
   ReadResourceResultSchema,
   Resource,
+  ResourceTemplate,
+  Root,
   ServerNotification,
   Tool,
+  LoggingLevel,
 } from "@modelcontextprotocol/sdk/types.js";
-import { useEffect, useRef, useState } from "react";
+import React, {
+  Suspense,
+  useCallback,
+  useEffect,
+  useRef,
+  useState,
+} from "react";
+import { useConnection } from "./lib/hooks/useConnection";
+import { useDraggablePane } from "./lib/hooks/useDraggablePane";
+import { StdErrNotification } from "./lib/notificationTypes";
 
-import { Button } from "@/components/ui/button";
-import { Input } from "@/components/ui/input";
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from "@/components/ui/select";
 import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import {
   Bell,
   Files,
+  FolderTree,
   Hammer,
   Hash,
   MessageSquare,
-  Play,
-  Send,
-  Terminal,
 } from "lucide-react";
 
-import { AnyZodObject } from "zod";
+import { z } from "zod";
 import "./App.css";
 import ConsoleTab from "./components/ConsoleTab";
 import HistoryAndNotifications from "./components/History";
 import PingTab from "./components/PingTab";
 import PromptsTab, { Prompt } from "./components/PromptsTab";
-import RequestsTab from "./components/RequestsTabs";
 import ResourcesTab from "./components/ResourcesTab";
+import RootsTab from "./components/RootsTab";
 import SamplingTab, { PendingRequest } from "./components/SamplingTab";
 import Sidebar from "./components/Sidebar";
 import ToolsTab from "./components/ToolsTab";
+import { DEFAULT_INSPECTOR_CONFIG } from "./lib/constants";
+import { InspectorConfig } from "./lib/configurationTypes";
+import { getMCPProxyAddress } from "./utils/configUtils";
+
+const CONFIG_LOCAL_STORAGE_KEY = "inspectorConfig_v1";
 
 const App = () => {
-  const [connectionStatus, setConnectionStatus] = useState<
-    "disconnected" | "connected" | "error"
-  >("disconnected");
   const [resources, setResources] = useState<Resource[]>([]);
+  const [resourceTemplates, setResourceTemplates] = useState<
+    ResourceTemplate[]
+  >([]);
   const [resourceContent, setResourceContent] = useState<string>("");
   const [prompts, setPrompts] = useState<Prompt[]>([]);
   const [promptContent, setPromptContent] = useState<string>("");
   const [tools, setTools] = useState<Tool[]>([]);
-  const [toolResult, setToolResult] = useState<string>("");
-  const [error, setError] = useState<string | null>(null);
+  const [toolResult, setToolResult] =
+    useState<CompatibilityCallToolResult | null>(null);
+  const [errors, setErrors] = useState<Record<string, string | null>>({
+    resources: null,
+    prompts: null,
+    tools: null,
+  });
   const [command, setCommand] = useState<string>(() => {
-    return (
-      localStorage.getItem("lastCommand") ||
-      "/Users/ashwin/.nvm/versions/node/v18.20.4/bin/node"
-    );
+    return localStorage.getItem("lastCommand") || "mcp-server-everything";
   });
   const [args, setArgs] = useState<string>(() => {
     return localStorage.getItem("lastArgs") || "";
   });
-  const [url, setUrl] = useState<string>("http://localhost:3001/sse");
-  const [transportType, setTransportType] = useState<"stdio" | "sse">("stdio");
-  const [requestHistory, setRequestHistory] = useState<
-    { request: string; response: string }[]
-  >([]);
-  const [mcpClient, setMcpClient] = useState<Client | null>(null);
+
+  const [sseUrl, setSseUrl] = useState<string>(() => {
+    return localStorage.getItem("lastSseUrl") || "http://localhost:3001/sse";
+  });
+  const [transportType, setTransportType] = useState<
+    "stdio" | "sse" | "streamable-http"
+  >(() => {
+    return (
+      (localStorage.getItem("lastTransportType") as
+        | "stdio"
+        | "sse"
+        | "streamable-http") || "stdio"
+    );
+  });
+  const [logLevel, setLogLevel] = useState<LoggingLevel>("debug");
   const [notifications, setNotifications] = useState<ServerNotification[]>([]);
+  const [stdErrNotifications, setStdErrNotifications] = useState<
+    StdErrNotification[]
+  >([]);
+  const [roots, setRoots] = useState<Root[]>([]);
+  const [env, setEnv] = useState<Record<string, string>>({});
+
+  const [config, setConfig] = useState<InspectorConfig>(() => {
+    const savedConfig = localStorage.getItem(CONFIG_LOCAL_STORAGE_KEY);
+    if (savedConfig) {
+      // merge default config with saved config
+      const mergedConfig = {
+        ...DEFAULT_INSPECTOR_CONFIG,
+        ...JSON.parse(savedConfig),
+      } as InspectorConfig;
+
+      // update description of keys to match the new description (in case of any updates to the default config description)
+      Object.entries(mergedConfig).forEach(([key, value]) => {
+        mergedConfig[key as keyof InspectorConfig] = {
+          ...value,
+          label: DEFAULT_INSPECTOR_CONFIG[key as keyof InspectorConfig].label,
+        };
+      });
+
+      return mergedConfig;
+    }
+    return DEFAULT_INSPECTOR_CONFIG;
+  });
+  const [bearerToken, setBearerToken] = useState<string>(() => {
+    return localStorage.getItem("lastBearerToken") || "";
+  });
+
+  const [headerName, setHeaderName] = useState<string>(() => {
+    return localStorage.getItem("lastHeaderName") || "";
+  });
 
   const [pendingSampleRequests, setPendingSampleRequests] = useState<
     Array<
@@ -88,6 +137,134 @@ const App = () => {
     >
   >([]);
   const nextRequestId = useRef(0);
+  const rootsRef = useRef<Root[]>([]);
+
+  const [selectedResource, setSelectedResource] = useState<Resource | null>(
+    null,
+  );
+  const [resourceSubscriptions, setResourceSubscriptions] = useState<
+    Set<string>
+  >(new Set<string>());
+
+  const [selectedPrompt, setSelectedPrompt] = useState<Prompt | null>(null);
+  const [selectedTool, setSelectedTool] = useState<Tool | null>(null);
+  const [nextResourceCursor, setNextResourceCursor] = useState<
+    string | undefined
+  >();
+  const [nextResourceTemplateCursor, setNextResourceTemplateCursor] = useState<
+    string | undefined
+  >();
+  const [nextPromptCursor, setNextPromptCursor] = useState<
+    string | undefined
+  >();
+  const [nextToolCursor, setNextToolCursor] = useState<string | undefined>();
+  const progressTokenRef = useRef(0);
+
+  const { height: historyPaneHeight, handleDragStart } = useDraggablePane(300);
+
+  const {
+    connectionStatus,
+    serverCapabilities,
+    mcpClient,
+    requestHistory,
+    makeRequest,
+    sendNotification,
+    handleCompletion,
+    completionsSupported,
+    connect: connectMcpServer,
+    disconnect: disconnectMcpServer,
+  } = useConnection({
+    transportType,
+    command,
+    args,
+    sseUrl,
+    env,
+    bearerToken,
+    headerName,
+    config,
+    onNotification: (notification) => {
+      setNotifications((prev) => [...prev, notification as ServerNotification]);
+    },
+    onStdErrNotification: (notification) => {
+      setStdErrNotifications((prev) => [
+        ...prev,
+        notification as StdErrNotification,
+      ]);
+    },
+    onPendingRequest: (request, resolve, reject) => {
+      setPendingSampleRequests((prev) => [
+        ...prev,
+        { id: nextRequestId.current++, request, resolve, reject },
+      ]);
+    },
+    getRoots: () => rootsRef.current,
+  });
+
+  useEffect(() => {
+    localStorage.setItem("lastCommand", command);
+  }, [command]);
+
+  useEffect(() => {
+    localStorage.setItem("lastArgs", args);
+  }, [args]);
+
+  useEffect(() => {
+    localStorage.setItem("lastSseUrl", sseUrl);
+  }, [sseUrl]);
+
+  useEffect(() => {
+    localStorage.setItem("lastTransportType", transportType);
+  }, [transportType]);
+
+  useEffect(() => {
+    localStorage.setItem("lastBearerToken", bearerToken);
+  }, [bearerToken]);
+
+  useEffect(() => {
+    localStorage.setItem("lastHeaderName", headerName);
+  }, [headerName]);
+
+  useEffect(() => {
+    localStorage.setItem(CONFIG_LOCAL_STORAGE_KEY, JSON.stringify(config));
+  }, [config]);
+
+  // Auto-connect to previously saved serverURL after OAuth callback
+  const onOAuthConnect = useCallback(
+    (serverUrl: string) => {
+      setSseUrl(serverUrl);
+      setTransportType("sse");
+      void connectMcpServer();
+    },
+    [connectMcpServer],
+  );
+
+  useEffect(() => {
+    fetch(`${getMCPProxyAddress(config)}/config`)
+      .then((response) => response.json())
+      .then((data) => {
+        setEnv(data.defaultEnvironment);
+        if (data.defaultCommand) {
+          setCommand(data.defaultCommand);
+        }
+        if (data.defaultArgs) {
+          setArgs(data.defaultArgs);
+        }
+      })
+      .catch((error) =>
+        console.error("Error fetching default environment:", error),
+      );
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  useEffect(() => {
+    rootsRef.current = roots;
+  }, [roots]);
+
+  useEffect(() => {
+    if (!window.location.hash) {
+      window.location.hash = "resources";
+    }
+  }, []);
 
   const handleApproveSampling = (id: number, result: CreateMessageResult) => {
     setPendingSampleRequests((prev) => {
@@ -105,330 +282,457 @@ const App = () => {
     });
   };
 
-  const [selectedResource, setSelectedResource] = useState<Resource | null>(
-    null,
-  );
-  const [selectedPrompt, setSelectedPrompt] = useState<Prompt | null>(null);
-  const [selectedTool, setSelectedTool] = useState<Tool | null>(null);
-  const [nextResourceCursor, setNextResourceCursor] = useState<
-    string | undefined
-  >();
-  const [nextPromptCursor, setNextPromptCursor] = useState<
-    string | undefined
-  >();
-  const [nextToolCursor, setNextToolCursor] = useState<string | undefined>();
-  const progressTokenRef = useRef(0);
-
-  useEffect(() => {
-    localStorage.setItem("lastCommand", command);
-  }, [command]);
-
-  useEffect(() => {
-    localStorage.setItem("lastArgs", args);
-  }, [args]);
-
-  const pushHistory = (request: object, response: object) => {
-    setRequestHistory((prev) => [
-      ...prev,
-      { request: JSON.stringify(request), response: JSON.stringify(response) },
-    ]);
+  const clearError = (tabKey: keyof typeof errors) => {
+    setErrors((prev) => ({ ...prev, [tabKey]: null }));
   };
 
-  const makeRequest = async <T extends AnyZodObject>(
+  const sendMCPRequest = async <T extends z.ZodType>(
     request: ClientRequest,
     schema: T,
+    tabKey?: keyof typeof errors,
   ) => {
-    if (!mcpClient) {
-      throw new Error("MCP client not connected");
-    }
-
     try {
-      const response = await mcpClient.request(request, schema);
-      pushHistory(request, response);
+      const response = await makeRequest(request, schema);
+      if (tabKey !== undefined) {
+        clearError(tabKey);
+      }
       return response;
-    } catch (e: unknown) {
-      setError((e as Error).message);
+    } catch (e) {
+      const errorString = (e as Error).message ?? String(e);
+      if (tabKey !== undefined) {
+        setErrors((prev) => ({
+          ...prev,
+          [tabKey]: errorString,
+        }));
+      }
       throw e;
     }
   };
 
   const listResources = async () => {
-    const response = await makeRequest(
+    const response = await sendMCPRequest(
       {
         method: "resources/list" as const,
         params: nextResourceCursor ? { cursor: nextResourceCursor } : {},
       },
       ListResourcesResultSchema,
+      "resources",
     );
     setResources(resources.concat(response.resources ?? []));
     setNextResourceCursor(response.nextCursor);
   };
 
+  const listResourceTemplates = async () => {
+    const response = await sendMCPRequest(
+      {
+        method: "resources/templates/list" as const,
+        params: nextResourceTemplateCursor
+          ? { cursor: nextResourceTemplateCursor }
+          : {},
+      },
+      ListResourceTemplatesResultSchema,
+      "resources",
+    );
+    setResourceTemplates(
+      resourceTemplates.concat(response.resourceTemplates ?? []),
+    );
+    setNextResourceTemplateCursor(response.nextCursor);
+  };
+
   const readResource = async (uri: string) => {
-    const response = await makeRequest(
+    const response = await sendMCPRequest(
       {
         method: "resources/read" as const,
         params: { uri },
       },
       ReadResourceResultSchema,
+      "resources",
     );
     setResourceContent(JSON.stringify(response, null, 2));
   };
 
+  const subscribeToResource = async (uri: string) => {
+    if (!resourceSubscriptions.has(uri)) {
+      await sendMCPRequest(
+        {
+          method: "resources/subscribe" as const,
+          params: { uri },
+        },
+        z.object({}),
+        "resources",
+      );
+      const clone = new Set(resourceSubscriptions);
+      clone.add(uri);
+      setResourceSubscriptions(clone);
+    }
+  };
+
+  const unsubscribeFromResource = async (uri: string) => {
+    if (resourceSubscriptions.has(uri)) {
+      await sendMCPRequest(
+        {
+          method: "resources/unsubscribe" as const,
+          params: { uri },
+        },
+        z.object({}),
+        "resources",
+      );
+      const clone = new Set(resourceSubscriptions);
+      clone.delete(uri);
+      setResourceSubscriptions(clone);
+    }
+  };
+
   const listPrompts = async () => {
-    const response = await makeRequest(
+    const response = await sendMCPRequest(
       {
         method: "prompts/list" as const,
         params: nextPromptCursor ? { cursor: nextPromptCursor } : {},
       },
       ListPromptsResultSchema,
+      "prompts",
     );
     setPrompts(response.prompts);
     setNextPromptCursor(response.nextCursor);
   };
 
   const getPrompt = async (name: string, args: Record<string, string> = {}) => {
-    const response = await makeRequest(
+    const response = await sendMCPRequest(
       {
         method: "prompts/get" as const,
         params: { name, arguments: args },
       },
       GetPromptResultSchema,
+      "prompts",
     );
     setPromptContent(JSON.stringify(response, null, 2));
   };
 
   const listTools = async () => {
-    const response = await makeRequest(
+    const response = await sendMCPRequest(
       {
         method: "tools/list" as const,
         params: nextToolCursor ? { cursor: nextToolCursor } : {},
       },
       ListToolsResultSchema,
+      "tools",
     );
     setTools(response.tools);
     setNextToolCursor(response.nextCursor);
   };
 
   const callTool = async (name: string, params: Record<string, unknown>) => {
-    const response = await makeRequest(
-      {
-        method: "tools/call" as const,
-        params: {
-          name,
-          arguments: params,
-          _meta: {
-            progressToken: progressTokenRef.current++,
+    try {
+      const response = await sendMCPRequest(
+        {
+          method: "tools/call" as const,
+          params: {
+            name,
+            arguments: params,
+            _meta: {
+              progressToken: progressTokenRef.current++,
+            },
           },
         },
-      },
-      CallToolResultSchema,
-    );
-    setToolResult(JSON.stringify(response.toolResult, null, 2));
-  };
-
-  const connectMcpServer = async () => {
-    try {
-      const client = new Client({
-        name: "mcp-inspector",
-        version: "0.0.1",
-      });
-
-      const backendUrl = new URL("http://localhost:3000/sse");
-
-      backendUrl.searchParams.append("transportType", transportType);
-      if (transportType === "stdio") {
-        backendUrl.searchParams.append("command", command);
-        backendUrl.searchParams.append("args", args);
-      } else {
-        backendUrl.searchParams.append("url", url);
-      }
-
-      const clientTransport = new SSEClientTransport(backendUrl);
-      await client.connect(clientTransport);
-
-      client.setNotificationHandler(
-        ProgressNotificationSchema,
-        (notification) => {
-          setNotifications((prevNotifications) => [
-            ...prevNotifications,
-            notification,
-          ]);
-        },
+        CompatibilityCallToolResultSchema,
+        "tools",
       );
-
-      client.setRequestHandler(CreateMessageRequestSchema, (request) => {
-        return new Promise<CreateMessageResult>((resolve, reject) => {
-          setPendingSampleRequests((prev) => [
-            ...prev,
-            { id: nextRequestId.current++, request, resolve, reject },
-          ]);
-        });
-      });
-
-      setMcpClient(client);
-      setConnectionStatus("connected");
+      setToolResult(response);
     } catch (e) {
-      console.error(e);
-      setConnectionStatus("error");
+      const toolResult: CompatibilityCallToolResult = {
+        content: [
+          {
+            type: "text",
+            text: (e as Error).message ?? String(e),
+          },
+        ],
+        isError: true,
+      };
+      setToolResult(toolResult);
     }
   };
 
+  const handleRootsChange = async () => {
+    await sendNotification({ method: "notifications/roots/list_changed" });
+  };
+
+  const sendLogLevelRequest = async (level: LoggingLevel) => {
+    await sendMCPRequest(
+      {
+        method: "logging/setLevel" as const,
+        params: { level },
+      },
+      z.object({}),
+    );
+    setLogLevel(level);
+  };
+
+  const clearStdErrNotifications = () => {
+    setStdErrNotifications([]);
+  };
+
+  if (window.location.pathname === "/oauth/callback") {
+    const OAuthCallback = React.lazy(
+      () => import("./components/OAuthCallback"),
+    );
+    return (
+      <Suspense fallback={<div>Loading...</div>}>
+        <OAuthCallback onConnect={onOAuthConnect} />
+      </Suspense>
+    );
+  }
+
   return (
-    <div className="flex h-screen bg-gray-100">
-      <Sidebar connectionStatus={connectionStatus} />
+    <div className="flex h-screen bg-background">
+      <Sidebar
+        connectionStatus={connectionStatus}
+        transportType={transportType}
+        setTransportType={setTransportType}
+        command={command}
+        setCommand={setCommand}
+        args={args}
+        setArgs={setArgs}
+        sseUrl={sseUrl}
+        setSseUrl={setSseUrl}
+        env={env}
+        setEnv={setEnv}
+        config={config}
+        setConfig={setConfig}
+        bearerToken={bearerToken}
+        setBearerToken={setBearerToken}
+        headerName={headerName}
+        setHeaderName={setHeaderName}
+        onConnect={connectMcpServer}
+        onDisconnect={disconnectMcpServer}
+        stdErrNotifications={stdErrNotifications}
+        logLevel={logLevel}
+        sendLogLevelRequest={sendLogLevelRequest}
+        loggingSupported={!!serverCapabilities?.logging || false}
+        clearStdErrNotifications={clearStdErrNotifications}
+      />
       <div className="flex-1 flex flex-col overflow-hidden">
-        <h1 className="text-2xl font-bold p-4">MCP Inspector</h1>
-        <div className="flex-1 overflow-auto flex">
-          <div className="flex-1">
-            <div className="p-4 bg-white shadow-md m-4 rounded-md">
-              <h2 className="text-lg font-semibold mb-2">Connect MCP Server</h2>
-              <div className="flex space-x-2 mb-2">
-                <Select
-                  value={transportType}
-                  onValueChange={(value: "stdio" | "sse") =>
-                    setTransportType(value)
-                  }
+        <div className="flex-1 overflow-auto">
+          {mcpClient ? (
+            <Tabs
+              defaultValue={
+                Object.keys(serverCapabilities ?? {}).includes(
+                  window.location.hash.slice(1),
+                )
+                  ? window.location.hash.slice(1)
+                  : serverCapabilities?.resources
+                    ? "resources"
+                    : serverCapabilities?.prompts
+                      ? "prompts"
+                      : serverCapabilities?.tools
+                        ? "tools"
+                        : "ping"
+              }
+              className="w-full p-4"
+              onValueChange={(value) => (window.location.hash = value)}
+            >
+              <TabsList className="mb-4 p-0">
+                <TabsTrigger
+                  value="resources"
+                  disabled={!serverCapabilities?.resources}
                 >
-                  <SelectTrigger className="w-[180px]">
-                    <SelectValue placeholder="Select transport type" />
-                  </SelectTrigger>
-                  <SelectContent>
-                    <SelectItem value="stdio">STDIO</SelectItem>
-                    <SelectItem value="sse">SSE</SelectItem>
-                  </SelectContent>
-                </Select>
-                {transportType === "stdio" ? (
+                  <Files className="w-4 h-4 mr-2" />
+                  Resources
+                </TabsTrigger>
+                <TabsTrigger
+                  value="prompts"
+                  disabled={!serverCapabilities?.prompts}
+                >
+                  <MessageSquare className="w-4 h-4 mr-2" />
+                  Prompts
+                </TabsTrigger>
+                <TabsTrigger
+                  value="tools"
+                  disabled={!serverCapabilities?.tools}
+                >
+                  <Hammer className="w-4 h-4 mr-2" />
+                  Tools
+                </TabsTrigger>
+                <TabsTrigger value="ping">
+                  <Bell className="w-4 h-4 mr-2" />
+                  Ping
+                </TabsTrigger>
+                <TabsTrigger value="sampling" className="relative">
+                  <Hash className="w-4 h-4 mr-2" />
+                  Sampling
+                  {pendingSampleRequests.length > 0 && (
+                    <span className="absolute -top-1 -right-1 bg-red-500 text-white text-xs rounded-full h-4 w-4 flex items-center justify-center">
+                      {pendingSampleRequests.length}
+                    </span>
+                  )}
+                </TabsTrigger>
+                <TabsTrigger value="roots">
+                  <FolderTree className="w-4 h-4 mr-2" />
+                  Roots
+                </TabsTrigger>
+              </TabsList>
+
+              <div className="w-full">
+                {!serverCapabilities?.resources &&
+                !serverCapabilities?.prompts &&
+                !serverCapabilities?.tools ? (
+                  <div className="flex items-center justify-center p-4">
+                    <p className="text-lg text-gray-500">
+                      The connected server does not support any MCP capabilities
+                    </p>
+                  </div>
+                ) : (
                   <>
-                    <Input
-                      placeholder="Command"
-                      value={command}
-                      onChange={(e) => setCommand(e.target.value)}
+                    <ResourcesTab
+                      resources={resources}
+                      resourceTemplates={resourceTemplates}
+                      listResources={() => {
+                        clearError("resources");
+                        listResources();
+                      }}
+                      clearResources={() => {
+                        setResources([]);
+                        setNextResourceCursor(undefined);
+                      }}
+                      listResourceTemplates={() => {
+                        clearError("resources");
+                        listResourceTemplates();
+                      }}
+                      clearResourceTemplates={() => {
+                        setResourceTemplates([]);
+                        setNextResourceTemplateCursor(undefined);
+                      }}
+                      readResource={(uri) => {
+                        clearError("resources");
+                        readResource(uri);
+                      }}
+                      selectedResource={selectedResource}
+                      setSelectedResource={(resource) => {
+                        clearError("resources");
+                        setSelectedResource(resource);
+                      }}
+                      resourceSubscriptionsSupported={
+                        serverCapabilities?.resources?.subscribe || false
+                      }
+                      resourceSubscriptions={resourceSubscriptions}
+                      subscribeToResource={(uri) => {
+                        clearError("resources");
+                        subscribeToResource(uri);
+                      }}
+                      unsubscribeFromResource={(uri) => {
+                        clearError("resources");
+                        unsubscribeFromResource(uri);
+                      }}
+                      handleCompletion={handleCompletion}
+                      completionsSupported={completionsSupported}
+                      resourceContent={resourceContent}
+                      nextCursor={nextResourceCursor}
+                      nextTemplateCursor={nextResourceTemplateCursor}
+                      error={errors.resources}
                     />
-                    <Input
-                      placeholder="Arguments (space-separated)"
-                      value={args}
-                      onChange={(e) => setArgs(e.target.value)}
+                    <PromptsTab
+                      prompts={prompts}
+                      listPrompts={() => {
+                        clearError("prompts");
+                        listPrompts();
+                      }}
+                      clearPrompts={() => {
+                        setPrompts([]);
+                        setNextPromptCursor(undefined);
+                      }}
+                      getPrompt={(name, args) => {
+                        clearError("prompts");
+                        getPrompt(name, args);
+                      }}
+                      selectedPrompt={selectedPrompt}
+                      setSelectedPrompt={(prompt) => {
+                        clearError("prompts");
+                        setSelectedPrompt(prompt);
+                        setPromptContent("");
+                      }}
+                      handleCompletion={handleCompletion}
+                      completionsSupported={completionsSupported}
+                      promptContent={promptContent}
+                      nextCursor={nextPromptCursor}
+                      error={errors.prompts}
+                    />
+                    <ToolsTab
+                      tools={tools}
+                      listTools={() => {
+                        clearError("tools");
+                        listTools();
+                      }}
+                      clearTools={() => {
+                        setTools([]);
+                        setNextToolCursor(undefined);
+                      }}
+                      callTool={async (name, params) => {
+                        clearError("tools");
+                        setToolResult(null);
+                        await callTool(name, params);
+                      }}
+                      selectedTool={selectedTool}
+                      setSelectedTool={(tool) => {
+                        clearError("tools");
+                        setSelectedTool(tool);
+                        setToolResult(null);
+                      }}
+                      toolResult={toolResult}
+                      nextCursor={nextToolCursor}
+                      error={errors.tools}
+                    />
+                    <ConsoleTab />
+                    <PingTab
+                      onPingClick={() => {
+                        void sendMCPRequest(
+                          {
+                            method: "ping" as const,
+                          },
+                          EmptyResultSchema,
+                        );
+                      }}
+                    />
+                    <SamplingTab
+                      pendingRequests={pendingSampleRequests}
+                      onApprove={handleApproveSampling}
+                      onReject={handleRejectSampling}
+                    />
+                    <RootsTab
+                      roots={roots}
+                      setRoots={setRoots}
+                      onRootsChange={handleRootsChange}
                     />
                   </>
-                ) : (
-                  <Input
-                    placeholder="URL"
-                    value={url}
-                    onChange={(e) => setUrl(e.target.value)}
-                  />
                 )}
-                <Button onClick={connectMcpServer}>
-                  <Play className="w-4 h-4 mr-2" />
-                  Connect
-                </Button>
               </div>
+            </Tabs>
+          ) : (
+            <div className="flex items-center justify-center h-full">
+              <p className="text-lg text-gray-500">
+                Connect to an MCP server to start inspecting
+              </p>
             </div>
-            {mcpClient ? (
-              <Tabs defaultValue="resources" className="w-full p-4">
-                <TabsList className="mb-4 p-0">
-                  <TabsTrigger value="resources">
-                    <Files className="w-4 h-4 mr-2" />
-                    Resources
-                  </TabsTrigger>
-                  <TabsTrigger value="prompts">
-                    <MessageSquare className="w-4 h-4 mr-2" />
-                    Prompts
-                  </TabsTrigger>
-                  <TabsTrigger value="requests" disabled>
-                    <Send className="w-4 h-4 mr-2" />
-                    Requests
-                  </TabsTrigger>
-                  <TabsTrigger value="tools">
-                    <Hammer className="w-4 h-4 mr-2" />
-                    Tools
-                  </TabsTrigger>
-                  <TabsTrigger value="console" disabled>
-                    <Terminal className="w-4 h-4 mr-2" />
-                    Console
-                  </TabsTrigger>
-                  <TabsTrigger value="ping">
-                    <Bell className="w-4 h-4 mr-2" />
-                    Ping
-                  </TabsTrigger>
-                  <TabsTrigger value="sampling" className="relative">
-                    <Hash className="w-4 h-4 mr-2" />
-                    Sampling
-                    {pendingSampleRequests.length > 0 && (
-                      <span className="absolute -top-1 -right-1 bg-red-500 text-white text-xs rounded-full h-4 w-4 flex items-center justify-center">
-                        {pendingSampleRequests.length}
-                      </span>
-                    )}
-                  </TabsTrigger>
-                </TabsList>
-
-                <div className="w-full">
-                  <ResourcesTab
-                    resources={resources}
-                    listResources={listResources}
-                    readResource={readResource}
-                    selectedResource={selectedResource}
-                    setSelectedResource={setSelectedResource}
-                    resourceContent={resourceContent}
-                    nextCursor={nextResourceCursor}
-                    error={error}
-                  />
-                  <PromptsTab
-                    prompts={prompts}
-                    listPrompts={listPrompts}
-                    getPrompt={getPrompt}
-                    selectedPrompt={selectedPrompt}
-                    setSelectedPrompt={setSelectedPrompt}
-                    promptContent={promptContent}
-                    nextCursor={nextPromptCursor}
-                    error={error}
-                  />
-                  <RequestsTab />
-                  <ToolsTab
-                    tools={tools}
-                    listTools={listTools}
-                    callTool={callTool}
-                    selectedTool={selectedTool}
-                    setSelectedTool={(tool) => {
-                      setSelectedTool(tool);
-                      setToolResult("");
-                    }}
-                    toolResult={toolResult}
-                    nextCursor={nextToolCursor}
-                    error={error}
-                  />
-                  <ConsoleTab />
-                  <PingTab
-                    onPingClick={() => {
-                      void makeRequest(
-                        {
-                          method: "ping" as const,
-                        },
-                        EmptyResultSchema,
-                      );
-                    }}
-                  />
-                  <SamplingTab
-                    pendingRequests={pendingSampleRequests}
-                    onApprove={handleApproveSampling}
-                    onReject={handleRejectSampling}
-                  />
-                </div>
-              </Tabs>
-            ) : (
-              <div className="flex items-center justify-center h-full">
-                <p className="text-lg text-gray-500">
-                  Connect to an MCP server to start inspecting
-                </p>
-              </div>
-            )}
+          )}
+        </div>
+        <div
+          className="relative border-t border-border"
+          style={{
+            height: `${historyPaneHeight}px`,
+          }}
+        >
+          <div
+            className="absolute w-full h-4 -top-2 cursor-row-resize flex items-center justify-center hover:bg-accent/50"
+            onMouseDown={handleDragStart}
+          >
+            <div className="w-8 h-1 rounded-full bg-border" />
+          </div>
+          <div className="h-full overflow-auto">
+            <HistoryAndNotifications
+              requestHistory={requestHistory}
+              serverNotifications={notifications}
+            />
           </div>
         </div>
       </div>
-      <HistoryAndNotifications
-        requestHistory={requestHistory}
-        serverNotifications={notifications}
-      />
     </div>
   );
 };

client/src/__mocks__/styleMock.js

@@ -0,0 +1 @@
+module.exports = {};

client/src/assets/react.svg

@@ -1 +0,0 @@
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client/src/components/DynamicJsonForm.tsx

@@ -0,0 +1,308 @@
+import { useState, useEffect, useCallback, useRef } from "react";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import JsonEditor from "./JsonEditor";
+import { updateValueAtPath } from "@/utils/jsonUtils";
+import { generateDefaultValue } from "@/utils/schemaUtils";
+import type { JsonValue, JsonSchemaType } from "@/utils/jsonUtils";
+
+interface DynamicJsonFormProps {
+  schema: JsonSchemaType;
+  value: JsonValue;
+  onChange: (value: JsonValue) => void;
+  maxDepth?: number;
+}
+
+const isSimpleObject = (schema: JsonSchemaType): boolean => {
+  const supportedTypes = ["string", "number", "integer", "boolean", "null"];
+  if (supportedTypes.includes(schema.type)) return true;
+  if (schema.type !== "object") return false;
+  return Object.values(schema.properties ?? {}).every((prop) =>
+    supportedTypes.includes(prop.type),
+  );
+};
+
+const DynamicJsonForm = ({
+  schema,
+  value,
+  onChange,
+  maxDepth = 3,
+}: DynamicJsonFormProps) => {
+  const isOnlyJSON = !isSimpleObject(schema);
+  const [isJsonMode, setIsJsonMode] = useState(isOnlyJSON);
+  const [jsonError, setJsonError] = useState<string>();
+  // Store the raw JSON string to allow immediate feedback during typing
+  // while deferring parsing until the user stops typing
+  const [rawJsonValue, setRawJsonValue] = useState<string>(
+    JSON.stringify(value ?? generateDefaultValue(schema), null, 2),
+  );
+
+  // Use a ref to manage debouncing timeouts to avoid parsing JSON
+  // on every keystroke which would be inefficient and error-prone
+  const timeoutRef = useRef<ReturnType<typeof setTimeout>>();
+
+  // Debounce JSON parsing and parent updates to handle typing gracefully
+  const debouncedUpdateParent = useCallback(
+    (jsonString: string) => {
+      // Clear any existing timeout
+      if (timeoutRef.current) {
+        clearTimeout(timeoutRef.current);
+      }
+
+      // Set a new timeout
+      timeoutRef.current = setTimeout(() => {
+        try {
+          const parsed = JSON.parse(jsonString);
+          onChange(parsed);
+          setJsonError(undefined);
+        } catch {
+          // Don't set error during normal typing
+        }
+      }, 300);
+    },
+    [onChange, setJsonError],
+  );
+
+  // Update rawJsonValue when value prop changes
+  useEffect(() => {
+    if (!isJsonMode) {
+      setRawJsonValue(
+        JSON.stringify(value ?? generateDefaultValue(schema), null, 2),
+      );
+    }
+  }, [value, schema, isJsonMode]);
+
+  const handleSwitchToFormMode = () => {
+    if (isJsonMode) {
+      // When switching to Form mode, ensure we have valid JSON
+      try {
+        const parsed = JSON.parse(rawJsonValue);
+        // Update the parent component's state with the parsed value
+        onChange(parsed);
+        // Switch to form mode
+        setIsJsonMode(false);
+      } catch (err) {
+        setJsonError(err instanceof Error ? err.message : "Invalid JSON");
+      }
+    } else {
+      // Update raw JSON value when switching to JSON mode
+      setRawJsonValue(
+        JSON.stringify(value ?? generateDefaultValue(schema), null, 2),
+      );
+      setIsJsonMode(true);
+    }
+  };
+
+  const formatJson = () => {
+    try {
+      const jsonStr = rawJsonValue.trim();
+      if (!jsonStr) {
+        return;
+      }
+      const formatted = JSON.stringify(JSON.parse(jsonStr), null, 2);
+      setRawJsonValue(formatted);
+      debouncedUpdateParent(formatted);
+      setJsonError(undefined);
+    } catch (err) {
+      setJsonError(err instanceof Error ? err.message : "Invalid JSON");
+    }
+  };
+
+  const renderFormFields = (
+    propSchema: JsonSchemaType,
+    currentValue: JsonValue,
+    path: string[] = [],
+    depth: number = 0,
+  ) => {
+    if (
+      depth >= maxDepth &&
+      (propSchema.type === "object" || propSchema.type === "array")
+    ) {
+      // Render as JSON editor when max depth is reached
+      return (
+        <JsonEditor
+          value={JSON.stringify(
+            currentValue ?? generateDefaultValue(propSchema),
+            null,
+            2,
+          )}
+          onChange={(newValue) => {
+            try {
+              const parsed = JSON.parse(newValue);
+              handleFieldChange(path, parsed);
+              setJsonError(undefined);
+            } catch (err) {
+              setJsonError(err instanceof Error ? err.message : "Invalid JSON");
+            }
+          }}
+          error={jsonError}
+        />
+      );
+    }
+
+    switch (propSchema.type) {
+      case "string":
+        return (
+          <Input
+            type="text"
+            value={(currentValue as string) ?? ""}
+            onChange={(e) => {
+              const val = e.target.value;
+              // Allow clearing non-required fields by setting undefined
+              // This preserves the distinction between empty string and unset
+              if (!val && !propSchema.required) {
+                handleFieldChange(path, undefined);
+              } else {
+                handleFieldChange(path, val);
+              }
+            }}
+            placeholder={propSchema.description}
+            required={propSchema.required}
+          />
+        );
+      case "number":
+        return (
+          <Input
+            type="number"
+            value={(currentValue as number)?.toString() ?? ""}
+            onChange={(e) => {
+              const val = e.target.value;
+              // Allow clearing non-required number fields
+              // This preserves the distinction between 0 and unset
+              if (!val && !propSchema.required) {
+                handleFieldChange(path, undefined);
+              } else {
+                const num = Number(val);
+                if (!isNaN(num)) {
+                  handleFieldChange(path, num);
+                }
+              }
+            }}
+            placeholder={propSchema.description}
+            required={propSchema.required}
+          />
+        );
+      case "integer":
+        return (
+          <Input
+            type="number"
+            step="1"
+            value={(currentValue as number)?.toString() ?? ""}
+            onChange={(e) => {
+              const val = e.target.value;
+              // Allow clearing non-required integer fields
+              // This preserves the distinction between 0 and unset
+              if (!val && !propSchema.required) {
+                handleFieldChange(path, undefined);
+              } else {
+                const num = Number(val);
+                // Only update if it's a valid integer
+                if (!isNaN(num) && Number.isInteger(num)) {
+                  handleFieldChange(path, num);
+                }
+              }
+            }}
+            placeholder={propSchema.description}
+            required={propSchema.required}
+          />
+        );
+      case "boolean":
+        return (
+          <Input
+            type="checkbox"
+            checked={(currentValue as boolean) ?? false}
+            onChange={(e) => handleFieldChange(path, e.target.checked)}
+            className="w-4 h-4"
+            required={propSchema.required}
+          />
+        );
+      default:
+        return null;
+    }
+  };
+
+  const handleFieldChange = (path: string[], fieldValue: JsonValue) => {
+    if (path.length === 0) {
+      onChange(fieldValue);
+      return;
+    }
+
+    try {
+      const newValue = updateValueAtPath(value, path, fieldValue);
+      onChange(newValue);
+    } catch (error) {
+      console.error("Failed to update form value:", error);
+      onChange(value);
+    }
+  };
+
+  const shouldUseJsonMode =
+    schema.type === "object" &&
+    (!schema.properties || Object.keys(schema.properties).length === 0);
+
+  useEffect(() => {
+    if (shouldUseJsonMode && !isJsonMode) {
+      setIsJsonMode(true);
+    }
+  }, [shouldUseJsonMode, isJsonMode]);
+
+  return (
+    <div className="space-y-4">
+      <div className="flex justify-end space-x-2">
+        {isJsonMode && (
+          <Button
+            type="button"
+            variant="outline"
+            size="sm"
+            onClick={formatJson}
+          >
+            Format JSON
+          </Button>
+        )}
+        {!isOnlyJSON && (
+          <Button variant="outline" size="sm" onClick={handleSwitchToFormMode}>
+            {isJsonMode ? "Switch to Form" : "Switch to JSON"}
+          </Button>
+        )}
+      </div>
+
+      {isJsonMode ? (
+        <JsonEditor
+          value={rawJsonValue}
+          onChange={(newValue) => {
+            // Always update local state
+            setRawJsonValue(newValue);
+
+            // Use the debounced function to attempt parsing and updating parent
+            debouncedUpdateParent(newValue);
+          }}
+          error={jsonError}
+        />
+      ) : // If schema type is object but value is not an object or is empty, and we have actual JSON data,
+      // render a simple representation of the JSON data
+      schema.type === "object" &&
+        (typeof value !== "object" ||
+          value === null ||
+          Object.keys(value).length === 0) &&
+        rawJsonValue &&
+        rawJsonValue !== "{}" ? (
+        <div className="space-y-4 border rounded-md p-4">
+          <p className="text-sm text-gray-500">
+            Form view not available for this JSON structure. Using simplified
+            view:
+          </p>
+          <pre className="bg-gray-50 dark:bg-gray-800 dark:text-gray-100 p-4 rounded text-sm overflow-auto">
+            {rawJsonValue}
+          </pre>
+          <p className="text-sm text-gray-500">
+            Use JSON mode for full editing capabilities.
+          </p>
+        </div>
+      ) : (
+        renderFormFields(schema, value)
+      )}
+    </div>
+  );
+};
+
+export default DynamicJsonForm;

client/src/components/History.tsx

@@ -1,12 +1,12 @@
 import { ServerNotification } from "@modelcontextprotocol/sdk/types.js";
-import { Copy } from "lucide-react";
 import { useState } from "react";
+import JsonView from "./JsonView";
 
 const HistoryAndNotifications = ({
   requestHistory,
   serverNotifications,
 }: {
-  requestHistory: Array<{ request: string; response: string | null }>;
+  requestHistory: Array<{ request: string; response?: string }>;
   serverNotifications: ServerNotification[];
 }) => {
   const [expandedRequests, setExpandedRequests] = useState<{
@@ -24,13 +24,9 @@ const HistoryAndNotifications = ({
     setExpandedNotifications((prev) => ({ ...prev, [index]: !prev[index] }));
   };
 
-  const copyToClipboard = (text: string) => {
-    navigator.clipboard.writeText(text);
-  };
-
   return (
-    <div className="w-64 bg-white shadow-md p-4 overflow-hidden flex flex-col h-full">
-      <div className="flex-1 overflow-y-auto mb-4 border-b pb-4">
+    <div className="bg-card overflow-hidden flex h-full">
+      <div className="flex-1 overflow-y-auto p-4 border-r">
         <h2 className="text-lg font-semibold mb-4">History</h2>
         {requestHistory.length === 0 ? (
           <p className="text-sm text-gray-500 italic">No history yet</p>
@@ -42,7 +38,7 @@ const HistoryAndNotifications = ({
               .map((request, index) => (
                 <li
                   key={index}
-                  className="text-sm text-gray-600 bg-gray-100 p-2 rounded"
+                  className="text-sm text-foreground bg-secondary p-2 rounded"
                 >
                   <div
                     className="flex justify-between items-center cursor-pointer"
@@ -67,16 +63,12 @@ const HistoryAndNotifications = ({
                           <span className="font-semibold text-blue-600">
                             Request:
                           </span>
-                          <button
-                            onClick={() => copyToClipboard(request.request)}
-                            className="text-blue-500 hover:text-blue-700"
-                          >
-                            <Copy size={16} />
-                          </button>
                         </div>
-                        <pre className="whitespace-pre-wrap break-words bg-blue-50 p-2 rounded">
-                          {JSON.stringify(JSON.parse(request.request), null, 2)}
-                        </pre>
+
+                        <JsonView
+                          data={request.request}
+                          className="bg-background"
+                        />
                       </div>
                       {request.response && (
                         <div className="mt-2">
@@ -84,20 +76,11 @@ const HistoryAndNotifications = ({
                             <span className="font-semibold text-green-600">
                               Response:
                             </span>
-                            <button
-                              onClick={() => copyToClipboard(request.response!)}
-                              className="text-blue-500 hover:text-blue-700"
-                            >
-                              <Copy size={16} />
-                            </button>
                           </div>
-                          <pre className="whitespace-pre-wrap break-words bg-green-50 p-2 rounded">
-                            {JSON.stringify(
-                              JSON.parse(request.response),
-                              null,
-                              2,
-                            )}
-                          </pre>
+                          <JsonView
+                            data={request.response}
+                            className="bg-background"
+                          />
                         </div>
                       )}
                     </>
@@ -107,7 +90,7 @@ const HistoryAndNotifications = ({
           </ul>
         )}
       </div>
-      <div className="flex-1 overflow-y-auto">
+      <div className="flex-1 overflow-y-auto p-4">
         <h2 className="text-lg font-semibold mb-4">Server Notifications</h2>
         {serverNotifications.length === 0 ? (
           <p className="text-sm text-gray-500 italic">No notifications yet</p>
@@ -119,7 +102,7 @@ const HistoryAndNotifications = ({
               .map((notification, index) => (
                 <li
                   key={index}
-                  className="text-sm text-gray-600 bg-gray-100 p-2 rounded"
+                  className="text-sm text-foreground bg-secondary p-2 rounded"
                 >
                   <div
                     className="flex justify-between items-center cursor-pointer"
@@ -137,18 +120,11 @@ const HistoryAndNotifications = ({
                         <span className="font-semibold text-purple-600">
                           Details:
                         </span>
-                        <button
-                          onClick={() =>
-                            copyToClipboard(JSON.stringify(notification))
-                          }
-                          className="text-blue-500 hover:text-blue-700"
-                        >
-                          <Copy size={16} />
-                        </button>
                       </div>
-                      <pre className="whitespace-pre-wrap break-words bg-purple-50 p-2 rounded">
-                        {JSON.stringify(notification, null, 2)}
-                      </pre>
+                      <JsonView
+                        data={JSON.stringify(notification, null, 2)}
+                        className="bg-background"
+                      />
                     </div>
                   )}
                 </li>

client/src/components/JsonEditor.tsx

@@ -0,0 +1,67 @@
+import { useState, useEffect } from "react";
+import Editor from "react-simple-code-editor";
+import Prism from "prismjs";
+import "prismjs/components/prism-json";
+import "prismjs/themes/prism.css";
+
+interface JsonEditorProps {
+  value: string;
+  onChange: (value: string) => void;
+  error?: string;
+}
+
+const JsonEditor = ({
+  value,
+  onChange,
+  error: externalError,
+}: JsonEditorProps) => {
+  const [editorContent, setEditorContent] = useState(value || "");
+  const [internalError, setInternalError] = useState<string | undefined>(
+    undefined,
+  );
+
+  useEffect(() => {
+    setEditorContent(value || "");
+  }, [value]);
+
+  const handleEditorChange = (newContent: string) => {
+    setEditorContent(newContent);
+    setInternalError(undefined);
+    onChange(newContent);
+  };
+
+  const displayError = internalError || externalError;
+
+  return (
+    <div className="relative">
+      <div
+        className={`border rounded-md ${
+          displayError
+            ? "border-red-500"
+            : "border-gray-200 dark:border-gray-800"
+        }`}
+      >
+        <Editor
+          value={editorContent}
+          onValueChange={handleEditorChange}
+          highlight={(code) =>
+            Prism.highlight(code, Prism.languages.json, "json")
+          }
+          padding={10}
+          style={{
+            fontFamily: '"Fira code", "Fira Mono", monospace',
+            fontSize: 14,
+            backgroundColor: "transparent",
+            minHeight: "100px",
+          }}
+          className="w-full"
+        />
+      </div>
+      {displayError && (
+        <p className="text-sm text-red-500 mt-1">{displayError}</p>
+      )}
+    </div>
+  );
+};
+
+export default JsonEditor;

client/src/components/JsonView.tsx

@@ -0,0 +1,286 @@
+import { useState, memo, useMemo, useCallback, useEffect } from "react";
+import type { JsonValue } from "@/utils/jsonUtils";
+import clsx from "clsx";
+import { Copy, CheckCheck } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { useToast } from "@/hooks/use-toast";
+import { getDataType, tryParseJson } from "@/utils/jsonUtils";
+
+interface JsonViewProps {
+  data: unknown;
+  name?: string;
+  initialExpandDepth?: number;
+  className?: string;
+  withCopyButton?: boolean;
+  isError?: boolean;
+}
+
+const JsonView = memo(
+  ({
+    data,
+    name,
+    initialExpandDepth = 3,
+    className,
+    withCopyButton = true,
+    isError = false,
+  }: JsonViewProps) => {
+    const { toast } = useToast();
+    const [copied, setCopied] = useState(false);
+
+    useEffect(() => {
+      let timeoutId: NodeJS.Timeout;
+      if (copied) {
+        timeoutId = setTimeout(() => {
+          setCopied(false);
+        }, 500);
+      }
+      return () => {
+        if (timeoutId) {
+          clearTimeout(timeoutId);
+        }
+      };
+    }, [copied]);
+
+    const normalizedData = useMemo(() => {
+      return typeof data === "string"
+        ? tryParseJson(data).success
+          ? tryParseJson(data).data
+          : data
+        : data;
+    }, [data]);
+
+    const handleCopy = useCallback(() => {
+      try {
+        navigator.clipboard.writeText(
+          typeof normalizedData === "string"
+            ? normalizedData
+            : JSON.stringify(normalizedData, null, 2),
+        );
+        setCopied(true);
+      } catch (error) {
+        toast({
+          title: "Error",
+          description: `There was an error coping result into the clipboard: ${error instanceof Error ? error.message : String(error)}`,
+          variant: "destructive",
+        });
+      }
+    }, [toast, normalizedData]);
+
+    return (
+      <div className={clsx("p-4 border rounded relative", className)}>
+        {withCopyButton && (
+          <Button
+            size="icon"
+            variant="ghost"
+            className="absolute top-2 right-2"
+            onClick={handleCopy}
+          >
+            {copied ? (
+              <CheckCheck className="size-4 dark:text-green-700 text-green-600" />
+            ) : (
+              <Copy className="size-4 text-foreground" />
+            )}
+          </Button>
+        )}
+        <div className="font-mono text-sm transition-all duration-300">
+          <JsonNode
+            data={normalizedData as JsonValue}
+            name={name}
+            depth={0}
+            initialExpandDepth={initialExpandDepth}
+            isError={isError}
+          />
+        </div>
+      </div>
+    );
+  },
+);
+
+JsonView.displayName = "JsonView";
+
+interface JsonNodeProps {
+  data: JsonValue;
+  name?: string;
+  depth: number;
+  initialExpandDepth: number;
+  isError?: boolean;
+}
+
+const JsonNode = memo(
+  ({
+    data,
+    name,
+    depth = 0,
+    initialExpandDepth,
+    isError = false,
+  }: JsonNodeProps) => {
+    const [isExpanded, setIsExpanded] = useState(depth < initialExpandDepth);
+    const [typeStyleMap] = useState<Record<string, string>>({
+      number: "text-blue-600",
+      boolean: "text-amber-600",
+      null: "text-purple-600",
+      undefined: "text-gray-600",
+      string: "text-green-600 group-hover:text-green-500",
+      error: "text-red-600 group-hover:text-red-500",
+      default: "text-gray-700",
+    });
+    const dataType = getDataType(data);
+
+    const renderCollapsible = (isArray: boolean) => {
+      const items = isArray
+        ? (data as JsonValue[])
+        : Object.entries(data as Record<string, JsonValue>);
+      const itemCount = items.length;
+      const isEmpty = itemCount === 0;
+
+      const symbolMap = {
+        open: isArray ? "[" : "{",
+        close: isArray ? "]" : "}",
+        collapsed: isArray ? "[ ... ]" : "{ ... }",
+        empty: isArray ? "[]" : "{}",
+      };
+
+      if (isEmpty) {
+        return (
+          <div className="flex items-center">
+            {name && (
+              <span className="mr-1 text-gray-600 dark:text-gray-400">
+                {name}:
+              </span>
+            )}
+            <span className="text-gray-500">{symbolMap.empty}</span>
+          </div>
+        );
+      }
+
+      return (
+        <div className="flex flex-col">
+          <div
+            className="flex items-center mr-1 rounded cursor-pointer group hover:bg-gray-800/10 dark:hover:bg-gray-800/20"
+            onClick={() => setIsExpanded(!isExpanded)}
+          >
+            {name && (
+              <span className="mr-1 text-gray-600 dark:text-gray-400 dark:group-hover:text-gray-100 group-hover:text-gray-400">
+                {name}:
+              </span>
+            )}
+            {isExpanded ? (
+              <span className="text-gray-600 dark:text-gray-400 dark:group-hover:text-gray-100 group-hover:text-gray-400">
+                {symbolMap.open}
+              </span>
+            ) : (
+              <>
+                <span className="text-gray-600 dark:group-hover:text-gray-100 group-hover:text-gray-400">
+                  {symbolMap.collapsed}
+                </span>
+                <span className="ml-1 text-gray-700 dark:group-hover:text-gray-100 group-hover:text-gray-400">
+                  {itemCount} {itemCount === 1 ? "item" : "items"}
+                </span>
+              </>
+            )}
+          </div>
+          {isExpanded && (
+            <>
+              <div className="pl-2 ml-4 border-l border-gray-200 dark:border-gray-800">
+                {isArray
+                  ? (items as JsonValue[]).map((item, index) => (
+                      <div key={index} className="my-1">
+                        <JsonNode
+                          data={item}
+                          name={`${index}`}
+                          depth={depth + 1}
+                          initialExpandDepth={initialExpandDepth}
+                        />
+                      </div>
+                    ))
+                  : (items as [string, JsonValue][]).map(([key, value]) => (
+                      <div key={key} className="my-1">
+                        <JsonNode
+                          data={value}
+                          name={key}
+                          depth={depth + 1}
+                          initialExpandDepth={initialExpandDepth}
+                        />
+                      </div>
+                    ))}
+              </div>
+              <div className="text-gray-600 dark:text-gray-400">
+                {symbolMap.close}
+              </div>
+            </>
+          )}
+        </div>
+      );
+    };
+
+    const renderString = (value: string) => {
+      const maxLength = 100;
+      const isTooLong = value.length > maxLength;
+
+      if (!isTooLong) {
+        return (
+          <div className="flex mr-1 rounded hover:bg-gray-800/20">
+            {name && (
+              <span className="mr-1 text-gray-600 dark:text-gray-400">
+                {name}:
+              </span>
+            )}
+            <pre
+              className={clsx(
+                isError ? typeStyleMap.error : typeStyleMap.string,
+                "break-all whitespace-pre-wrap",
+              )}
+            >
+              "{value}"
+            </pre>
+          </div>
+        );
+      }
+
+      return (
+        <div className="flex mr-1 rounded group hover:bg-gray-800/20">
+          {name && (
+            <span className="mr-1 text-gray-600 dark:text-gray-400 dark:group-hover:text-gray-100 group-hover:text-gray-400">
+              {name}:
+            </span>
+          )}
+          <pre
+            className={clsx(
+              isError ? typeStyleMap.error : typeStyleMap.string,
+              "cursor-pointer break-all whitespace-pre-wrap",
+            )}
+            onClick={() => setIsExpanded(!isExpanded)}
+            title={isExpanded ? "Click to collapse" : "Click to expand"}
+          >
+            {isExpanded ? `"${value}"` : `"${value.slice(0, maxLength)}..."`}
+          </pre>
+        </div>
+      );
+    };
+
+    switch (dataType) {
+      case "object":
+      case "array":
+        return renderCollapsible(dataType === "array");
+      case "string":
+        return renderString(data as string);
+      default:
+        return (
+          <div className="flex items-center mr-1 rounded hover:bg-gray-800/20">
+            {name && (
+              <span className="mr-1 text-gray-600 dark:text-gray-400">
+                {name}:
+              </span>
+            )}
+            <span className={typeStyleMap[dataType] || typeStyleMap.default}>
+              {data === null ? "null" : String(data)}
+            </span>
+          </div>
+        );
+    }
+  },
+);
+
+JsonNode.displayName = "JsonNode";
+
+export default JsonView;

client/src/components/ListPane.tsx

@@ -3,6 +3,7 @@ import { Button } from "./ui/button";
 type ListPaneProps<T> = {
   items: T[];
   listItems: () => void;
+  clearItems: () => void;
   setSelectedItem: (item: T) => void;
   renderItem: (item: T) => React.ReactNode;
   title: string;
@@ -13,15 +14,16 @@ type ListPaneProps<T> = {
 const ListPane = <T extends object>({
   items,
   listItems,
+  clearItems,
   setSelectedItem,
   renderItem,
   title,
   buttonText,
   isButtonDisabled,
 }: ListPaneProps<T>) => (
-  <div className="bg-white rounded-lg shadow">
-    <div className="p-4 border-b border-gray-200">
-      <h3 className="font-semibold">{title}</h3>
+  <div className="bg-card rounded-lg shadow">
+    <div className="p-4 border-b border-gray-200 dark:border-gray-800">
+      <h3 className="font-semibold dark:text-white">{title}</h3>
     </div>
     <div className="p-4">
       <Button
@@ -32,11 +34,19 @@ const ListPane = <T extends object>({
       >
         {buttonText}
       </Button>
+      <Button
+        variant="outline"
+        className="w-full mb-4"
+        onClick={clearItems}
+        disabled={items.length === 0}
+      >
+        Clear
+      </Button>
       <div className="space-y-2 overflow-y-auto max-h-96">
         {items.map((item, index) => (
           <div
             key={index}
-            className="flex items-center p-2 rounded hover:bg-gray-50 cursor-pointer"
+            className="flex items-center p-2 rounded hover:bg-gray-50 dark:hover:bg-gray-700 cursor-pointer"
             onClick={() => setSelectedItem(item)}
           >
             {renderItem(item)}

client/src/components/OAuthCallback.tsx

@@ -0,0 +1,85 @@
+import { useEffect, useRef } from "react";
+import { InspectorOAuthClientProvider } from "../lib/auth";
+import { SESSION_KEYS } from "../lib/constants";
+import { auth } from "@modelcontextprotocol/sdk/client/auth.js";
+import { useToast } from "@/hooks/use-toast.ts";
+import {
+  generateOAuthErrorDescription,
+  parseOAuthCallbackParams,
+} from "@/utils/oauthUtils.ts";
+
+interface OAuthCallbackProps {
+  onConnect: (serverUrl: string) => void;
+}
+
+const OAuthCallback = ({ onConnect }: OAuthCallbackProps) => {
+  const { toast } = useToast();
+  const hasProcessedRef = useRef(false);
+
+  useEffect(() => {
+    const handleCallback = async () => {
+      // Skip if we've already processed this callback
+      if (hasProcessedRef.current) {
+        return;
+      }
+      hasProcessedRef.current = true;
+
+      const notifyError = (description: string) =>
+        void toast({
+          title: "OAuth Authorization Error",
+          description,
+          variant: "destructive",
+        });
+
+      const params = parseOAuthCallbackParams(window.location.search);
+      if (!params.successful) {
+        return notifyError(generateOAuthErrorDescription(params));
+      }
+
+      const serverUrl = sessionStorage.getItem(SESSION_KEYS.SERVER_URL);
+      if (!serverUrl) {
+        return notifyError("Missing Server URL");
+      }
+
+      let result;
+      try {
+        // Create an auth provider with the current server URL
+        const serverAuthProvider = new InspectorOAuthClientProvider(serverUrl);
+
+        result = await auth(serverAuthProvider, {
+          serverUrl,
+          authorizationCode: params.code,
+        });
+      } catch (error) {
+        console.error("OAuth callback error:", error);
+        return notifyError(`Unexpected error occurred: ${error}`);
+      }
+
+      if (result !== "AUTHORIZED") {
+        return notifyError(
+          `Expected to be authorized after providing auth code, got: ${result}`,
+        );
+      }
+
+      // Finally, trigger auto-connect
+      toast({
+        title: "Success",
+        description: "Successfully authenticated with OAuth",
+        variant: "default",
+      });
+      onConnect(serverUrl);
+    };
+
+    handleCallback().finally(() => {
+      window.history.replaceState({}, document.title, "/");
+    });
+  }, [toast, onConnect]);
+
+  return (
+    <div className="flex items-center justify-center h-screen">
+      <p className="text-lg text-gray-500">Processing OAuth callback...</p>
+    </div>
+  );
+};
+
+export default OAuthCallback;

client/src/components/PingTab.tsx

@@ -3,16 +3,16 @@ import { Button } from "@/components/ui/button";
 
 const PingTab = ({ onPingClick }: { onPingClick: () => void }) => {
   return (
-    <TabsContent value="ping" className="grid grid-cols-2 gap-4">
-      <div className="col-span-2 flex justify-center items-center">
-        <Button
-          onClick={onPingClick}
-          className="bg-gradient-to-r from-purple-500 to-pink-500 hover:from-purple-600 hover:to-pink-600 text-white font-bold py-6 px-12 rounded-full shadow-lg transform transition duration-300 hover:scale-110 focus:outline-none focus:ring-4 focus:ring-purple-300 animate-pulse"
-        >
-          <span className="text-3xl mr-2">🚀</span>
-          MEGA PING
-          <span className="text-3xl ml-2">💥</span>
-        </Button>
+    <TabsContent value="ping">
+      <div className="grid grid-cols-2 gap-4">
+        <div className="col-span-2 flex justify-center items-center">
+          <Button
+            onClick={onPingClick}
+            className="font-bold py-6 px-12 rounded-full"
+          >
+            Ping Server
+          </Button>
+        </div>
       </div>
     </TabsContent>
   );

client/src/components/PromptsTab.tsx

@@ -1,13 +1,19 @@
 import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
 import { Button } from "@/components/ui/button";
-import { Input } from "@/components/ui/input";
+import { Combobox } from "@/components/ui/combobox";
 import { Label } from "@/components/ui/label";
 import { TabsContent } from "@/components/ui/tabs";
-import { Textarea } from "@/components/ui/textarea";
-import { ListPromptsResult } from "@modelcontextprotocol/sdk/types.js";
+
+import {
+  ListPromptsResult,
+  PromptReference,
+  ResourceReference,
+} from "@modelcontextprotocol/sdk/types.js";
 import { AlertCircle } from "lucide-react";
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import ListPane from "./ListPane";
+import { useCompletionState } from "@/lib/hooks/useCompletionState";
+import JsonView from "./JsonView";
 
 export type Prompt = {
   name: string;
@@ -22,26 +28,53 @@ export type Prompt = {
 const PromptsTab = ({
   prompts,
   listPrompts,
+  clearPrompts,
   getPrompt,
   selectedPrompt,
   setSelectedPrompt,
+  handleCompletion,
+  completionsSupported,
   promptContent,
   nextCursor,
   error,
 }: {
   prompts: Prompt[];
   listPrompts: () => void;
+  clearPrompts: () => void;
   getPrompt: (name: string, args: Record<string, string>) => void;
   selectedPrompt: Prompt | null;
-  setSelectedPrompt: (prompt: Prompt) => void;
+  setSelectedPrompt: (prompt: Prompt | null) => void;
+  handleCompletion: (
+    ref: PromptReference | ResourceReference,
+    argName: string,
+    value: string,
+  ) => Promise<string[]>;
+  completionsSupported: boolean;
   promptContent: string;
   nextCursor: ListPromptsResult["nextCursor"];
   error: string | null;
 }) => {
   const [promptArgs, setPromptArgs] = useState<Record<string, string>>({});
+  const { completions, clearCompletions, requestCompletions } =
+    useCompletionState(handleCompletion, completionsSupported);
 
-  const handleInputChange = (argName: string, value: string) => {
+  useEffect(() => {
+    clearCompletions();
+  }, [clearCompletions, selectedPrompt]);
+
+  const handleInputChange = async (argName: string, value: string) => {
     setPromptArgs((prev) => ({ ...prev, [argName]: value }));
+
+    if (selectedPrompt) {
+      requestCompletions(
+        {
+          type: "ref/prompt",
+          name: selectedPrompt.name,
+        },
+        argName,
+        value,
+      );
+    }
   };
 
   const handleGetPrompt = () => {
@@ -51,84 +84,91 @@ const PromptsTab = ({
   };
 
   return (
-    <TabsContent value="prompts" className="grid grid-cols-2 gap-4">
-      <ListPane
-        items={prompts}
-        listItems={listPrompts}
-        setSelectedItem={(prompt) => {
-          setSelectedPrompt(prompt);
-          setPromptArgs({});
-        }}
-        renderItem={(prompt) => (
-          <>
-            <span className="flex-1">{prompt.name}</span>
-            <span className="text-sm text-gray-500">{prompt.description}</span>
-          </>
-        )}
-        title="Prompts"
-        buttonText={nextCursor ? "List More Prompts" : "List Prompts"}
-        isButtonDisabled={!nextCursor && prompts.length > 0}
-      />
-
-      <div className="bg-white rounded-lg shadow">
-        <div className="p-4 border-b border-gray-200">
-          <h3 className="font-semibold">
-            {selectedPrompt ? selectedPrompt.name : "Select a prompt"}
-          </h3>
-        </div>
-        <div className="p-4">
-          {error ? (
-            <Alert variant="destructive">
-              <AlertCircle className="h-4 w-4" />
-              <AlertTitle>Error</AlertTitle>
-              <AlertDescription>{error}</AlertDescription>
-            </Alert>
-          ) : selectedPrompt ? (
-            <div className="space-y-4">
-              {selectedPrompt.description && (
-                <p className="text-sm text-gray-600">
-                  {selectedPrompt.description}
-                </p>
-              )}
-              {selectedPrompt.arguments?.map((arg) => (
-                <div key={arg.name}>
-                  <Label htmlFor={arg.name}>{arg.name}</Label>
-                  <Input
-                    id={arg.name}
-                    placeholder={`Enter ${arg.name}`}
-                    value={promptArgs[arg.name] || ""}
-                    onChange={(e) =>
-                      handleInputChange(arg.name, e.target.value)
-                    }
-                  />
-                  {arg.description && (
-                    <p className="text-xs text-gray-500 mt-1">
-                      {arg.description}
-                      {arg.required && (
-                        <span className="text-xs mt-1 ml-1">(Required)</span>
-                      )}
-                    </p>
-                  )}
-                </div>
-              ))}
-              <Button onClick={handleGetPrompt} className="w-full">
-                Get Prompt
-              </Button>
-              {promptContent && (
-                <Textarea
-                  value={promptContent}
-                  readOnly
-                  className="h-64 font-mono"
-                />
-              )}
-            </div>
-          ) : (
-            <Alert>
-              <AlertDescription>
-                Select a prompt from the list to view and use it
-              </AlertDescription>
-            </Alert>
+    <TabsContent value="prompts">
+      <div className="grid grid-cols-2 gap-4">
+        <ListPane
+          items={prompts}
+          listItems={listPrompts}
+          clearItems={() => {
+            clearPrompts();
+            setSelectedPrompt(null);
+          }}
+          setSelectedItem={(prompt) => {
+            setSelectedPrompt(prompt);
+            setPromptArgs({});
+          }}
+          renderItem={(prompt) => (
+            <>
+              <span className="flex-1">{prompt.name}</span>
+              <span className="text-sm text-gray-500">
+                {prompt.description}
+              </span>
+            </>
           )}
+          title="Prompts"
+          buttonText={nextCursor ? "List More Prompts" : "List Prompts"}
+          isButtonDisabled={!nextCursor && prompts.length > 0}
+        />
+
+        <div className="bg-card rounded-lg shadow">
+          <div className="p-4 border-b border-gray-200 dark:border-gray-800">
+            <h3 className="font-semibold">
+              {selectedPrompt ? selectedPrompt.name : "Select a prompt"}
+            </h3>
+          </div>
+          <div className="p-4">
+            {error ? (
+              <Alert variant="destructive">
+                <AlertCircle className="h-4 w-4" />
+                <AlertTitle>Error</AlertTitle>
+                <AlertDescription>{error}</AlertDescription>
+              </Alert>
+            ) : selectedPrompt ? (
+              <div className="space-y-4">
+                {selectedPrompt.description && (
+                  <p className="text-sm text-gray-600">
+                    {selectedPrompt.description}
+                  </p>
+                )}
+                {selectedPrompt.arguments?.map((arg) => (
+                  <div key={arg.name}>
+                    <Label htmlFor={arg.name}>{arg.name}</Label>
+                    <Combobox
+                      id={arg.name}
+                      placeholder={`Enter ${arg.name}`}
+                      value={promptArgs[arg.name] || ""}
+                      onChange={(value) => handleInputChange(arg.name, value)}
+                      onInputChange={(value) =>
+                        handleInputChange(arg.name, value)
+                      }
+                      options={completions[arg.name] || []}
+                    />
+
+                    {arg.description && (
+                      <p className="text-xs text-gray-500 mt-1">
+                        {arg.description}
+                        {arg.required && (
+                          <span className="text-xs mt-1 ml-1">(Required)</span>
+                        )}
+                      </p>
+                    )}
+                  </div>
+                ))}
+                <Button onClick={handleGetPrompt} className="w-full">
+                  Get Prompt
+                </Button>
+                {promptContent && (
+                  <JsonView data={promptContent} withCopyButton={false} />
+                )}
+              </div>
+            ) : (
+              <Alert>
+                <AlertDescription>
+                  Select a prompt from the list to view and use it
+                </AlertDescription>
+              </Alert>
+            )}
+          </div>
         </div>
       </div>
     </TabsContent>

client/src/components/RequestsTabs.tsx

@@ -1,33 +0,0 @@
-import { TabsContent } from "@/components/ui/tabs";
-import { Button } from "@/components/ui/button";
-import { Input } from "@/components/ui/input";
-import { Textarea } from "@/components/ui/textarea";
-import { Send } from "lucide-react";
-
-const RequestsTab = () => (
-  <TabsContent value="requests" className="space-y-4">
-    <div className="grid grid-cols-2 gap-4">
-      <div className="space-y-4">
-        <div className="flex space-x-2">
-          <Input placeholder="Method name" />
-          <Button>
-            <Send className="w-4 h-4 mr-2" />
-            Send
-          </Button>
-        </div>
-        <Textarea
-          placeholder="Request parameters (JSON)"
-          className="h-64 font-mono"
-        />
-      </div>
-      <div>
-        <div className="bg-gray-50 p-4 rounded-lg h-96 font-mono text-sm overflow-auto">
-          <div className="text-gray-500 mb-2">Response:</div>
-          {/* Response content would go here */}
-        </div>
-      </div>
-    </div>
-  </TabsContent>
-);
-
-export default RequestsTab;

client/src/components/ResourcesTab.tsx

@@ -1,88 +1,284 @@
 import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
 import { Button } from "@/components/ui/button";
+import { Label } from "@/components/ui/label";
+import { Combobox } from "@/components/ui/combobox";
 import { TabsContent } from "@/components/ui/tabs";
-import { ListResourcesResult, Resource } from "@modelcontextprotocol/sdk/types.js";
+import {
+  ListResourcesResult,
+  Resource,
+  ResourceTemplate,
+  ListResourceTemplatesResult,
+  ResourceReference,
+  PromptReference,
+} from "@modelcontextprotocol/sdk/types.js";
 import { AlertCircle, ChevronRight, FileText, RefreshCw } from "lucide-react";
 import ListPane from "./ListPane";
+import { useEffect, useState } from "react";
+import { useCompletionState } from "@/lib/hooks/useCompletionState";
+import JsonView from "./JsonView";
 
 const ResourcesTab = ({
   resources,
+  resourceTemplates,
   listResources,
+  clearResources,
+  listResourceTemplates,
+  clearResourceTemplates,
   readResource,
   selectedResource,
   setSelectedResource,
+  resourceSubscriptionsSupported,
+  resourceSubscriptions,
+  subscribeToResource,
+  unsubscribeFromResource,
+  handleCompletion,
+  completionsSupported,
   resourceContent,
   nextCursor,
+  nextTemplateCursor,
   error,
 }: {
   resources: Resource[];
+  resourceTemplates: ResourceTemplate[];
   listResources: () => void;
+  clearResources: () => void;
+  listResourceTemplates: () => void;
+  clearResourceTemplates: () => void;
   readResource: (uri: string) => void;
   selectedResource: Resource | null;
-  setSelectedResource: (resource: Resource) => void;
+  setSelectedResource: (resource: Resource | null) => void;
+  handleCompletion: (
+    ref: ResourceReference | PromptReference,
+    argName: string,
+    value: string,
+  ) => Promise<string[]>;
+  completionsSupported: boolean;
   resourceContent: string;
   nextCursor: ListResourcesResult["nextCursor"];
+  nextTemplateCursor: ListResourceTemplatesResult["nextCursor"];
   error: string | null;
-}) => (
-  <TabsContent value="resources" className="grid grid-cols-2 gap-4">
-    <ListPane
-      items={resources}
-      listItems={listResources}
-      setSelectedItem={(resource) => {
-        setSelectedResource(resource);
-        readResource(resource.uri);
-      }}
-      renderItem={(resource) => (
-        <div className="flex items-center w-full">
-          <FileText className="w-4 h-4 mr-2 flex-shrink-0 text-gray-500" />
-          <span className="flex-1 truncate" title={resource.uri.toString()}>
-            {resource.name}
-          </span>
-          <ChevronRight className="w-4 h-4 flex-shrink-0 text-gray-400" />
-        </div>
-      )}
-      title="Resources"
-      buttonText={nextCursor ? "List More Resources" : "List Resources"}
-      isButtonDisabled={!nextCursor && resources.length > 0}
-    />
+  resourceSubscriptionsSupported: boolean;
+  resourceSubscriptions: Set<string>;
+  subscribeToResource: (uri: string) => void;
+  unsubscribeFromResource: (uri: string) => void;
+}) => {
+  const [selectedTemplate, setSelectedTemplate] =
+    useState<ResourceTemplate | null>(null);
+  const [templateValues, setTemplateValues] = useState<Record<string, string>>(
+    {},
+  );
 
-    <div className="bg-white rounded-lg shadow">
-      <div className="p-4 border-b border-gray-200 flex justify-between items-center">
-        <h3 className="font-semibold truncate" title={selectedResource?.name}>
-          {selectedResource ? selectedResource.name : "Select a resource"}
-        </h3>
-        {selectedResource && (
-          <Button
-            variant="outline"
-            size="sm"
-            onClick={() => readResource(selectedResource.uri)}
-          >
-            <RefreshCw className="w-4 h-4 mr-2" />
-            Refresh
-          </Button>
-        )}
+  const { completions, clearCompletions, requestCompletions } =
+    useCompletionState(handleCompletion, completionsSupported);
+
+  useEffect(() => {
+    clearCompletions();
+  }, [clearCompletions]);
+
+  const fillTemplate = (
+    template: string,
+    values: Record<string, string>,
+  ): string => {
+    return template.replace(
+      /{([^}]+)}/g,
+      (_, key) => values[key] || `{${key}}`,
+    );
+  };
+
+  const handleTemplateValueChange = async (key: string, value: string) => {
+    setTemplateValues((prev) => ({ ...prev, [key]: value }));
+
+    if (selectedTemplate?.uriTemplate) {
+      requestCompletions(
+        {
+          type: "ref/resource",
+          uri: selectedTemplate.uriTemplate,
+        },
+        key,
+        value,
+      );
+    }
+  };
+
+  const handleReadTemplateResource = () => {
+    if (selectedTemplate) {
+      const uri = fillTemplate(selectedTemplate.uriTemplate, templateValues);
+      readResource(uri);
+      // We don't have the full Resource object here, so we create a partial one
+      setSelectedResource({ uri, name: uri } as Resource);
+    }
+  };
+
+  return (
+    <TabsContent value="resources">
+      <div className="grid grid-cols-3 gap-4">
+        <ListPane
+          items={resources}
+          listItems={listResources}
+          clearItems={() => {
+            clearResources();
+            // Condition to check if selected resource is not resource template's resource
+            if (!selectedTemplate) {
+              setSelectedResource(null);
+            }
+          }}
+          setSelectedItem={(resource) => {
+            setSelectedResource(resource);
+            readResource(resource.uri);
+            setSelectedTemplate(null);
+          }}
+          renderItem={(resource) => (
+            <div className="flex items-center w-full">
+              <FileText className="w-4 h-4 mr-2 flex-shrink-0 text-gray-500" />
+              <span className="flex-1 truncate" title={resource.uri.toString()}>
+                {resource.name}
+              </span>
+              <ChevronRight className="w-4 h-4 flex-shrink-0 text-gray-400" />
+            </div>
+          )}
+          title="Resources"
+          buttonText={nextCursor ? "List More Resources" : "List Resources"}
+          isButtonDisabled={!nextCursor && resources.length > 0}
+        />
+
+        <ListPane
+          items={resourceTemplates}
+          listItems={listResourceTemplates}
+          clearItems={() => {
+            clearResourceTemplates();
+            // Condition to check if selected resource is resource template's resource
+            if (selectedTemplate) {
+              setSelectedResource(null);
+            }
+            setSelectedTemplate(null);
+          }}
+          setSelectedItem={(template) => {
+            setSelectedTemplate(template);
+            setSelectedResource(null);
+            setTemplateValues({});
+          }}
+          renderItem={(template) => (
+            <div className="flex items-center w-full">
+              <FileText className="w-4 h-4 mr-2 flex-shrink-0 text-gray-500" />
+              <span className="flex-1 truncate" title={template.uriTemplate}>
+                {template.name}
+              </span>
+              <ChevronRight className="w-4 h-4 flex-shrink-0 text-gray-400" />
+            </div>
+          )}
+          title="Resource Templates"
+          buttonText={
+            nextTemplateCursor ? "List More Templates" : "List Templates"
+          }
+          isButtonDisabled={!nextTemplateCursor && resourceTemplates.length > 0}
+        />
+
+        <div className="bg-card rounded-lg shadow">
+          <div className="p-4 border-b border-gray-200 dark:border-gray-800 flex justify-between items-center">
+            <h3
+              className="font-semibold truncate"
+              title={selectedResource?.name || selectedTemplate?.name}
+            >
+              {selectedResource
+                ? selectedResource.name
+                : selectedTemplate
+                  ? selectedTemplate.name
+                  : "Select a resource or template"}
+            </h3>
+            {selectedResource && (
+              <div className="flex row-auto gap-1 justify-end w-2/5">
+                {resourceSubscriptionsSupported &&
+                  !resourceSubscriptions.has(selectedResource.uri) && (
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      onClick={() => subscribeToResource(selectedResource.uri)}
+                    >
+                      Subscribe
+                    </Button>
+                  )}
+                {resourceSubscriptionsSupported &&
+                  resourceSubscriptions.has(selectedResource.uri) && (
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      onClick={() =>
+                        unsubscribeFromResource(selectedResource.uri)
+                      }
+                    >
+                      Unsubscribe
+                    </Button>
+                  )}
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={() => readResource(selectedResource.uri)}
+                >
+                  <RefreshCw className="w-4 h-4 mr-2" />
+                  Refresh
+                </Button>
+              </div>
+            )}
+          </div>
+          <div className="p-4">
+            {error ? (
+              <Alert variant="destructive">
+                <AlertCircle className="h-4 w-4" />
+                <AlertTitle>Error</AlertTitle>
+                <AlertDescription>{error}</AlertDescription>
+              </Alert>
+            ) : selectedResource ? (
+              <JsonView
+                data={resourceContent}
+                className="bg-gray-50 dark:bg-gray-800 p-4 rounded text-sm overflow-auto max-h-96 text-gray-900 dark:text-gray-100"
+              />
+            ) : selectedTemplate ? (
+              <div className="space-y-4">
+                <p className="text-sm text-gray-600">
+                  {selectedTemplate.description}
+                </p>
+                {selectedTemplate.uriTemplate
+                  .match(/{([^}]+)}/g)
+                  ?.map((param) => {
+                    const key = param.slice(1, -1);
+                    return (
+                      <div key={key}>
+                        <Label htmlFor={key}>{key}</Label>
+                        <Combobox
+                          id={key}
+                          placeholder={`Enter ${key}`}
+                          value={templateValues[key] || ""}
+                          onChange={(value) =>
+                            handleTemplateValueChange(key, value)
+                          }
+                          onInputChange={(value) =>
+                            handleTemplateValueChange(key, value)
+                          }
+                          options={completions[key] || []}
+                        />
+                      </div>
+                    );
+                  })}
+                <Button
+                  onClick={handleReadTemplateResource}
+                  disabled={Object.keys(templateValues).length === 0}
+                >
+                  Read Resource
+                </Button>
+              </div>
+            ) : (
+              <Alert>
+                <AlertDescription>
+                  Select a resource or template from the list to view its
+                  contents
+                </AlertDescription>
+              </Alert>
+            )}
+          </div>
+        </div>
       </div>
-      <div className="p-4">
-        {error ? (
-          <Alert variant="destructive">
-            <AlertCircle className="h-4 w-4" />
-            <AlertTitle>Error</AlertTitle>
-            <AlertDescription>{error}</AlertDescription>
-          </Alert>
-        ) : selectedResource ? (
-          <pre className="bg-gray-50 p-4 rounded text-sm overflow-auto max-h-96 whitespace-pre-wrap break-words">
-            {resourceContent}
-          </pre>
-        ) : (
-          <Alert>
-            <AlertDescription>
-              Select a resource from the list to view its contents
-            </AlertDescription>
-          </Alert>
-        )}
-      </div>
-    </div>
-  </TabsContent>
-);
+    </TabsContent>
+  );
+};
 
 export default ResourcesTab;

client/src/components/RootsTab.tsx

@@ -0,0 +1,79 @@
+import { Alert, AlertDescription } from "@/components/ui/alert";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { TabsContent } from "@/components/ui/tabs";
+import { Root } from "@modelcontextprotocol/sdk/types.js";
+import { Plus, Minus, Save } from "lucide-react";
+
+const RootsTab = ({
+  roots,
+  setRoots,
+  onRootsChange,
+}: {
+  roots: Root[];
+  setRoots: React.Dispatch<React.SetStateAction<Root[]>>;
+  onRootsChange: () => void;
+}) => {
+  const addRoot = () => {
+    setRoots((currentRoots) => [...currentRoots, { uri: "file://", name: "" }]);
+  };
+
+  const removeRoot = (index: number) => {
+    setRoots((currentRoots) => currentRoots.filter((_, i) => i !== index));
+  };
+
+  const updateRoot = (index: number, field: keyof Root, value: string) => {
+    setRoots((currentRoots) =>
+      currentRoots.map((root, i) =>
+        i === index ? { ...root, [field]: value } : root,
+      ),
+    );
+  };
+
+  const handleSave = () => {
+    onRootsChange();
+  };
+
+  return (
+    <TabsContent value="roots">
+      <div className="space-y-4">
+        <Alert>
+          <AlertDescription>
+            Configure the root directories that the server can access
+          </AlertDescription>
+        </Alert>
+
+        {roots.map((root, index) => (
+          <div key={index} className="flex gap-2 items-center">
+            <Input
+              placeholder="file:// URI"
+              value={root.uri}
+              onChange={(e) => updateRoot(index, "uri", e.target.value)}
+              className="flex-1"
+            />
+            <Button
+              variant="destructive"
+              size="sm"
+              onClick={() => removeRoot(index)}
+            >
+              <Minus className="h-4 w-4" />
+            </Button>
+          </div>
+        ))}
+
+        <div className="flex gap-2">
+          <Button variant="outline" onClick={addRoot}>
+            <Plus className="h-4 w-4 mr-2" />
+            Add Root
+          </Button>
+          <Button onClick={handleSave}>
+            <Save className="h-4 w-4 mr-2" />
+            Save Changes
+          </Button>
+        </div>
+      </div>
+    </TabsContent>
+  );
+};
+
+export default RootsTab;

client/src/components/SamplingRequest.tsx

@@ -0,0 +1,167 @@
+import { Button } from "@/components/ui/button";
+import JsonView from "./JsonView";
+import { useMemo, useState } from "react";
+import {
+  CreateMessageResult,
+  CreateMessageResultSchema,
+} from "@modelcontextprotocol/sdk/types.js";
+import { PendingRequest } from "./SamplingTab";
+import DynamicJsonForm from "./DynamicJsonForm";
+import { useToast } from "@/hooks/use-toast";
+import { JsonSchemaType, JsonValue } from "@/utils/jsonUtils";
+
+export type SamplingRequestProps = {
+  request: PendingRequest;
+  onApprove: (id: number, result: CreateMessageResult) => void;
+  onReject: (id: number) => void;
+};
+
+const SamplingRequest = ({
+  onApprove,
+  request,
+  onReject,
+}: SamplingRequestProps) => {
+  const { toast } = useToast();
+
+  const [messageResult, setMessageResult] = useState<JsonValue>({
+    model: "stub-model",
+    stopReason: "endTurn",
+    role: "assistant",
+    content: {
+      type: "text",
+      text: "",
+    },
+  });
+
+  const contentType = (
+    (messageResult as { [key: string]: JsonValue })?.content as {
+      [key: string]: JsonValue;
+    }
+  )?.type;
+
+  const schema = useMemo(() => {
+    const s: JsonSchemaType = {
+      type: "object",
+      description: "Message result",
+      properties: {
+        model: {
+          type: "string",
+          default: "stub-model",
+          description: "model name",
+        },
+        stopReason: {
+          type: "string",
+          default: "endTurn",
+          description: "Stop reason",
+        },
+        role: {
+          type: "string",
+          default: "endTurn",
+          description: "Role of the model",
+        },
+        content: {
+          type: "object",
+          properties: {
+            type: {
+              type: "string",
+              default: "text",
+              description: "Type of content",
+            },
+          },
+        },
+      },
+    };
+
+    if (contentType === "text" && s.properties) {
+      s.properties.content.properties = {
+        ...s.properties.content.properties,
+        text: {
+          type: "string",
+          default: "",
+          description: "text content",
+        },
+      };
+      setMessageResult((prev) => ({
+        ...(prev as { [key: string]: JsonValue }),
+        content: {
+          type: contentType,
+          text: "",
+        },
+      }));
+    } else if (contentType === "image" && s.properties) {
+      s.properties.content.properties = {
+        ...s.properties.content.properties,
+        data: {
+          type: "string",
+          default: "",
+          description: "Base64 encoded image data",
+        },
+        mimeType: {
+          type: "string",
+          default: "",
+          description: "Mime type of the image",
+        },
+      };
+      setMessageResult((prev) => ({
+        ...(prev as { [key: string]: JsonValue }),
+        content: {
+          type: contentType,
+          data: "",
+          mimeType: "",
+        },
+      }));
+    }
+
+    return s;
+  }, [contentType]);
+
+  const handleApprove = (id: number) => {
+    const validationResult = CreateMessageResultSchema.safeParse(messageResult);
+    if (!validationResult.success) {
+      toast({
+        title: "Error",
+        description: `There was an error validating the message result: ${validationResult.error.message}`,
+        variant: "destructive",
+      });
+      return;
+    }
+
+    onApprove(id, validationResult.data);
+  };
+
+  return (
+    <div
+      data-testid="sampling-request"
+      className="flex gap-4 p-4 border rounded-lg space-y-4"
+    >
+      <div className="flex-1 bg-gray-50 dark:bg-gray-800 dark:text-gray-100 p-2 rounded">
+        <JsonView data={JSON.stringify(request.request)} />
+      </div>
+      <form className="flex-1 space-y-4">
+        <div className="space-y-2">
+          <DynamicJsonForm
+            schema={schema}
+            value={messageResult}
+            onChange={(newValue: JsonValue) => {
+              setMessageResult(newValue);
+            }}
+          />
+        </div>
+        <div className="flex space-x-2 mt-1">
+          <Button type="button" onClick={() => handleApprove(request.id)}>
+            Approve
+          </Button>
+          <Button
+            type="button"
+            variant="outline"
+            onClick={() => onReject(request.id)}
+          >
+            Reject
+          </Button>
+        </div>
+      </form>
+    </div>
+  );
+};
+
+export default SamplingRequest;

client/src/components/SamplingTab.tsx

@@ -1,10 +1,10 @@
 import { Alert, AlertDescription } from "@/components/ui/alert";
-import { Button } from "@/components/ui/button";
 import { TabsContent } from "@/components/ui/tabs";
 import {
   CreateMessageRequest,
   CreateMessageResult,
 } from "@modelcontextprotocol/sdk/types.js";
+import SamplingRequest from "./SamplingRequest";
 
 export type PendingRequest = {
   id: number;
@@ -18,45 +18,29 @@ export type Props = {
 };
 
 const SamplingTab = ({ pendingRequests, onApprove, onReject }: Props) => {
-  const handleApprove = (id: number) => {
-    // For now, just return a stub response
-    onApprove(id, {
-      model: "stub-model",
-      stopReason: "endTurn",
-      role: "assistant",
-      content: {
-        type: "text",
-        text: "This is a stub response.",
-      },
-    });
-  };
-
   return (
-    <TabsContent value="sampling" className="h-96">
-      <Alert>
-        <AlertDescription>
-          When the server requests LLM sampling, requests will appear here for
-          approval.
-        </AlertDescription>
-      </Alert>
-      <div className="mt-4 space-y-4">
-        <h3 className="text-lg font-semibold">Recent Requests</h3>
-        {pendingRequests.map((request) => (
-          <div key={request.id} className="p-4 border rounded-lg space-y-4">
-            <pre className="bg-gray-50 p-2 rounded">
-              {JSON.stringify(request.request, null, 2)}
-            </pre>
-            <div className="flex space-x-2">
-              <Button onClick={() => handleApprove(request.id)}>Approve</Button>
-              <Button variant="outline" onClick={() => onReject(request.id)}>
-                Reject
-              </Button>
-            </div>
-          </div>
-        ))}
-        {pendingRequests.length === 0 && (
-          <p className="text-gray-500">No pending requests</p>
-        )}
+    <TabsContent value="sampling">
+      <div className="h-96">
+        <Alert>
+          <AlertDescription>
+            When the server requests LLM sampling, requests will appear here for
+            approval.
+          </AlertDescription>
+        </Alert>
+        <div className="mt-4 space-y-4">
+          <h3 className="text-lg font-semibold">Recent Requests</h3>
+          {pendingRequests.map((request) => (
+            <SamplingRequest
+              key={request.id}
+              request={request}
+              onApprove={onApprove}
+              onReject={onReject}
+            />
+          ))}
+          {pendingRequests.length === 0 && (
+            <p className="text-gray-500">No pending requests</p>
+          )}
+        </div>
       </div>
     </TabsContent>
   );

client/src/components/Sidebar.tsx

@@ -1,39 +1,624 @@
-import { Menu, Settings } from "lucide-react";
+import { useState } from "react";
+import {
+  Play,
+  ChevronDown,
+  ChevronRight,
+  CircleHelp,
+  Bug,
+  Github,
+  Eye,
+  EyeOff,
+  RotateCcw,
+  Settings,
+  HelpCircle,
+  RefreshCwOff,
+} from "lucide-react";
 import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import { StdErrNotification } from "@/lib/notificationTypes";
+import {
+  LoggingLevel,
+  LoggingLevelSchema,
+} from "@modelcontextprotocol/sdk/types.js";
+import { InspectorConfig } from "@/lib/configurationTypes";
+import { ConnectionStatus } from "@/lib/constants";
+import useTheme from "../lib/useTheme";
+import { version } from "../../../package.json";
+import {
+  Tooltip,
+  TooltipTrigger,
+  TooltipContent,
+} from "@/components/ui/tooltip";
 
-const Sidebar = ({ connectionStatus }: { connectionStatus: string }) => (
-  <div className="w-64 bg-white border-r border-gray-200">
-    <div className="flex items-center p-4 border-b border-gray-200">
-      <Menu className="w-6 h-6 text-gray-500" />
-      <h1 className="ml-2 text-lg font-semibold">MCP Inspector</h1>
-    </div>
+interface SidebarProps {
+  connectionStatus: ConnectionStatus;
+  transportType: "stdio" | "sse" | "streamable-http";
+  setTransportType: (type: "stdio" | "sse" | "streamable-http") => void;
+  command: string;
+  setCommand: (command: string) => void;
+  args: string;
+  setArgs: (args: string) => void;
+  sseUrl: string;
+  setSseUrl: (url: string) => void;
+  env: Record<string, string>;
+  setEnv: (env: Record<string, string>) => void;
+  bearerToken: string;
+  setBearerToken: (token: string) => void;
+  headerName?: string;
+  setHeaderName?: (name: string) => void;
+  onConnect: () => void;
+  onDisconnect: () => void;
+  stdErrNotifications: StdErrNotification[];
+  clearStdErrNotifications: () => void;
+  logLevel: LoggingLevel;
+  sendLogLevelRequest: (level: LoggingLevel) => void;
+  loggingSupported: boolean;
+  config: InspectorConfig;
+  setConfig: (config: InspectorConfig) => void;
+}
 
-    <div className="p-4">
-      <div className="flex items-center space-x-2 mb-4">
-        <div
-          className={`w-2 h-2 rounded-full ${
-            connectionStatus === "connected"
-              ? "bg-green-500"
-              : connectionStatus === "error"
-                ? "bg-red-500"
-                : "bg-gray-500"
-          }`}
-        />
-        <span className="text-sm text-gray-600">
-          {connectionStatus === "connected"
-            ? "Connected"
-            : connectionStatus === "error"
-              ? "Connection Error"
-              : "Disconnected"}
-        </span>
+const Sidebar = ({
+  connectionStatus,
+  transportType,
+  setTransportType,
+  command,
+  setCommand,
+  args,
+  setArgs,
+  sseUrl,
+  setSseUrl,
+  env,
+  setEnv,
+  bearerToken,
+  setBearerToken,
+  headerName,
+  setHeaderName,
+  onConnect,
+  onDisconnect,
+  stdErrNotifications,
+  clearStdErrNotifications,
+  logLevel,
+  sendLogLevelRequest,
+  loggingSupported,
+  config,
+  setConfig,
+}: SidebarProps) => {
+  const [theme, setTheme] = useTheme();
+  const [showEnvVars, setShowEnvVars] = useState(false);
+  const [showBearerToken, setShowBearerToken] = useState(false);
+  const [showConfig, setShowConfig] = useState(false);
+  const [shownEnvVars, setShownEnvVars] = useState<Set<string>>(new Set());
+
+  return (
+    <div className="w-80 bg-card border-r border-border flex flex-col h-full">
+      <div className="flex items-center justify-between p-4 border-b border-gray-200 dark:border-gray-800">
+        <div className="flex items-center">
+          <h1 className="ml-2 text-lg font-semibold">
+            MCP Inspector v{version}
+          </h1>
+        </div>
       </div>
 
-      <Button variant="outline" className="w-full justify-start">
-        <Settings className="w-4 h-4 mr-2" />
-        Connection Settings
-      </Button>
+      <div className="p-4 flex-1 overflow-auto">
+        <div className="space-y-4">
+          <div className="space-y-2">
+            <label
+              className="text-sm font-medium"
+              htmlFor="transport-type-select"
+            >
+              Transport Type
+            </label>
+            <Select
+              value={transportType}
+              onValueChange={(value: "stdio" | "sse" | "streamable-http") =>
+                setTransportType(value)
+              }
+            >
+              <SelectTrigger id="transport-type-select">
+                <SelectValue placeholder="Select transport type" />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="stdio">STDIO</SelectItem>
+                <SelectItem value="sse">SSE</SelectItem>
+                <SelectItem value="streamable-http">Streamable HTTP</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
+
+          {transportType === "stdio" ? (
+            <>
+              <div className="space-y-2">
+                <label className="text-sm font-medium" htmlFor="command-input">
+                  Command
+                </label>
+                <Input
+                  id="command-input"
+                  placeholder="Command"
+                  value={command}
+                  onChange={(e) => setCommand(e.target.value)}
+                  className="font-mono"
+                />
+              </div>
+              <div className="space-y-2">
+                <label
+                  className="text-sm font-medium"
+                  htmlFor="arguments-input"
+                >
+                  Arguments
+                </label>
+                <Input
+                  id="arguments-input"
+                  placeholder="Arguments (space-separated)"
+                  value={args}
+                  onChange={(e) => setArgs(e.target.value)}
+                  className="font-mono"
+                />
+              </div>
+            </>
+          ) : (
+            <>
+              <div className="space-y-2">
+                <label className="text-sm font-medium" htmlFor="sse-url-input">
+                  URL
+                </label>
+                <Input
+                  id="sse-url-input"
+                  placeholder="URL"
+                  value={sseUrl}
+                  onChange={(e) => setSseUrl(e.target.value)}
+                  className="font-mono"
+                />
+              </div>
+              <div className="space-y-2">
+                <Button
+                  variant="outline"
+                  onClick={() => setShowBearerToken(!showBearerToken)}
+                  className="flex items-center w-full"
+                  data-testid="auth-button"
+                  aria-expanded={showBearerToken}
+                >
+                  {showBearerToken ? (
+                    <ChevronDown className="w-4 h-4 mr-2" />
+                  ) : (
+                    <ChevronRight className="w-4 h-4 mr-2" />
+                  )}
+                  Authentication
+                </Button>
+                {showBearerToken && (
+                  <div className="space-y-2">
+                    <label className="text-sm font-medium">Header Name</label>
+                    <Input
+                      placeholder="Authorization"
+                      onChange={(e) =>
+                        setHeaderName && setHeaderName(e.target.value)
+                      }
+                      data-testid="header-input"
+                      className="font-mono"
+                      value={headerName}
+                    />
+                    <label
+                      className="text-sm font-medium"
+                      htmlFor="bearer-token-input"
+                    >
+                      Bearer Token
+                    </label>
+                    <Input
+                      id="bearer-token-input"
+                      placeholder="Bearer Token"
+                      value={bearerToken}
+                      onChange={(e) => setBearerToken(e.target.value)}
+                      data-testid="bearer-token-input"
+                      className="font-mono"
+                      type="password"
+                    />
+                  </div>
+                )}
+              </div>
+            </>
+          )}
+          {transportType === "stdio" && (
+            <div className="space-y-2">
+              <Button
+                variant="outline"
+                onClick={() => setShowEnvVars(!showEnvVars)}
+                className="flex items-center w-full"
+                data-testid="env-vars-button"
+                aria-expanded={showEnvVars}
+              >
+                {showEnvVars ? (
+                  <ChevronDown className="w-4 h-4 mr-2" />
+                ) : (
+                  <ChevronRight className="w-4 h-4 mr-2" />
+                )}
+                Environment Variables
+              </Button>
+              {showEnvVars && (
+                <div className="space-y-2">
+                  {Object.entries(env).map(([key, value], idx) => (
+                    <div key={idx} className="space-y-2 pb-4">
+                      <div className="flex gap-2">
+                        <Input
+                          aria-label={`Environment variable key ${idx + 1}`}
+                          placeholder="Key"
+                          value={key}
+                          onChange={(e) => {
+                            const newKey = e.target.value;
+                            const newEnv = Object.entries(env).reduce(
+                              (acc, [k, v]) => {
+                                if (k === key) {
+                                  acc[newKey] = value;
+                                } else {
+                                  acc[k] = v;
+                                }
+                                return acc;
+                              },
+                              {} as Record<string, string>,
+                            );
+                            setEnv(newEnv);
+                            setShownEnvVars((prev) => {
+                              const next = new Set(prev);
+                              if (next.has(key)) {
+                                next.delete(key);
+                                next.add(newKey);
+                              }
+                              return next;
+                            });
+                          }}
+                          className="font-mono"
+                        />
+                        <Button
+                          variant="destructive"
+                          size="icon"
+                          className="h-9 w-9 p-0 shrink-0"
+                          onClick={() => {
+                            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+                            const { [key]: _removed, ...rest } = env;
+                            setEnv(rest);
+                          }}
+                        >
+                          ×
+                        </Button>
+                      </div>
+                      <div className="flex gap-2">
+                        <Input
+                          aria-label={`Environment variable value ${idx + 1}`}
+                          type={shownEnvVars.has(key) ? "text" : "password"}
+                          placeholder="Value"
+                          value={value}
+                          onChange={(e) => {
+                            const newEnv = { ...env };
+                            newEnv[key] = e.target.value;
+                            setEnv(newEnv);
+                          }}
+                          className="font-mono"
+                        />
+                        <Button
+                          variant="outline"
+                          size="icon"
+                          className="h-9 w-9 p-0 shrink-0"
+                          onClick={() => {
+                            setShownEnvVars((prev) => {
+                              const next = new Set(prev);
+                              if (next.has(key)) {
+                                next.delete(key);
+                              } else {
+                                next.add(key);
+                              }
+                              return next;
+                            });
+                          }}
+                          aria-label={
+                            shownEnvVars.has(key) ? "Hide value" : "Show value"
+                          }
+                          aria-pressed={shownEnvVars.has(key)}
+                          title={
+                            shownEnvVars.has(key) ? "Hide value" : "Show value"
+                          }
+                        >
+                          {shownEnvVars.has(key) ? (
+                            <Eye className="h-4 w-4" aria-hidden="true" />
+                          ) : (
+                            <EyeOff className="h-4 w-4" aria-hidden="true" />
+                          )}
+                        </Button>
+                      </div>
+                    </div>
+                  ))}
+                  <Button
+                    variant="outline"
+                    className="w-full mt-2"
+                    onClick={() => {
+                      const key = "";
+                      const newEnv = { ...env };
+                      newEnv[key] = "";
+                      setEnv(newEnv);
+                    }}
+                  >
+                    Add Environment Variable
+                  </Button>
+                </div>
+              )}
+            </div>
+          )}
+
+          {/* Configuration */}
+          <div className="space-y-2">
+            <Button
+              variant="outline"
+              onClick={() => setShowConfig(!showConfig)}
+              className="flex items-center w-full"
+              data-testid="config-button"
+              aria-expanded={showConfig}
+            >
+              {showConfig ? (
+                <ChevronDown className="w-4 h-4 mr-2" />
+              ) : (
+                <ChevronRight className="w-4 h-4 mr-2" />
+              )}
+              <Settings className="w-4 h-4 mr-2" />
+              Configuration
+            </Button>
+            {showConfig && (
+              <div className="space-y-2">
+                {Object.entries(config).map(([key, configItem]) => {
+                  const configKey = key as keyof InspectorConfig;
+                  return (
+                    <div key={key} className="space-y-2">
+                      <div className="flex items-center gap-1">
+                        <label
+                          className="text-sm font-medium text-green-600 break-all"
+                          htmlFor={`${configKey}-input`}
+                        >
+                          {configItem.label}
+                        </label>
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <HelpCircle className="h-4 w-4 text-muted-foreground" />
+                          </TooltipTrigger>
+                          <TooltipContent>
+                            {configItem.description}
+                          </TooltipContent>
+                        </Tooltip>
+                      </div>
+                      {typeof configItem.value === "number" ? (
+                        <Input
+                          id={`${configKey}-input`}
+                          type="number"
+                          data-testid={`${configKey}-input`}
+                          value={configItem.value}
+                          onChange={(e) => {
+                            const newConfig = { ...config };
+                            newConfig[configKey] = {
+                              ...configItem,
+                              value: Number(e.target.value),
+                            };
+                            setConfig(newConfig);
+                          }}
+                          className="font-mono"
+                        />
+                      ) : typeof configItem.value === "boolean" ? (
+                        <Select
+                          data-testid={`${configKey}-select`}
+                          value={configItem.value.toString()}
+                          onValueChange={(val) => {
+                            const newConfig = { ...config };
+                            newConfig[configKey] = {
+                              ...configItem,
+                              value: val === "true",
+                            };
+                            setConfig(newConfig);
+                          }}
+                        >
+                          <SelectTrigger id={`${configKey}-input`}>
+                            <SelectValue />
+                          </SelectTrigger>
+                          <SelectContent>
+                            <SelectItem value="true">True</SelectItem>
+                            <SelectItem value="false">False</SelectItem>
+                          </SelectContent>
+                        </Select>
+                      ) : (
+                        <Input
+                          id={`${configKey}-input`}
+                          data-testid={`${configKey}-input`}
+                          value={configItem.value}
+                          onChange={(e) => {
+                            const newConfig = { ...config };
+                            newConfig[configKey] = {
+                              ...configItem,
+                              value: e.target.value,
+                            };
+                            setConfig(newConfig);
+                          }}
+                          className="font-mono"
+                        />
+                      )}
+                    </div>
+                  );
+                })}
+              </div>
+            )}
+          </div>
+
+          <div className="space-y-2">
+            {connectionStatus === "connected" && (
+              <div className="grid grid-cols-2 gap-4">
+                <Button
+                  data-testid="connect-button"
+                  onClick={() => {
+                    onDisconnect();
+                    onConnect();
+                  }}
+                >
+                  <RotateCcw className="w-4 h-4 mr-2" />
+                  {transportType === "stdio" ? "Restart" : "Reconnect"}
+                </Button>
+                <Button onClick={onDisconnect}>
+                  <RefreshCwOff className="w-4 h-4 mr-2" />
+                  Disconnect
+                </Button>
+              </div>
+            )}
+            {connectionStatus !== "connected" && (
+              <Button className="w-full" onClick={onConnect}>
+                <Play className="w-4 h-4 mr-2" />
+                Connect
+              </Button>
+            )}
+
+            <div className="flex items-center justify-center space-x-2 mb-4">
+              <div
+                className={`w-2 h-2 rounded-full ${(() => {
+                  switch (connectionStatus) {
+                    case "connected":
+                      return "bg-green-500";
+                    case "error":
+                      return "bg-red-500";
+                    case "error-connecting-to-proxy":
+                      return "bg-red-500";
+                    default:
+                      return "bg-gray-500";
+                  }
+                })()}`}
+              />
+              <span className="text-sm text-gray-600">
+                {(() => {
+                  switch (connectionStatus) {
+                    case "connected":
+                      return "Connected";
+                    case "error":
+                      return "Connection Error, is your MCP server running?";
+                    case "error-connecting-to-proxy":
+                      return "Error Connecting to MCP Inspector Proxy - Check Console logs";
+                    default:
+                      return "Disconnected";
+                  }
+                })()}
+              </span>
+            </div>
+
+            {loggingSupported && connectionStatus === "connected" && (
+              <div className="space-y-2">
+                <label
+                  className="text-sm font-medium"
+                  htmlFor="logging-level-select"
+                >
+                  Logging Level
+                </label>
+                <Select
+                  value={logLevel}
+                  onValueChange={(value: LoggingLevel) =>
+                    sendLogLevelRequest(value)
+                  }
+                >
+                  <SelectTrigger id="logging-level-select">
+                    <SelectValue placeholder="Select logging level" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {Object.values(LoggingLevelSchema.enum).map((level) => (
+                      <SelectItem key={level} value={level}>
+                        {level}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              </div>
+            )}
+
+            {stdErrNotifications.length > 0 && (
+              <>
+                <div className="mt-4 border-t border-gray-200 pt-4">
+                  <div className="flex justify-between items-center">
+                    <h3 className="text-sm font-medium">
+                      Error output from MCP server
+                    </h3>
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      onClick={clearStdErrNotifications}
+                      className="h-8 px-2"
+                    >
+                      Clear
+                    </Button>
+                  </div>
+                  <div className="mt-2 max-h-80 overflow-y-auto">
+                    {stdErrNotifications.map((notification, index) => (
+                      <div
+                        key={index}
+                        className="text-sm text-red-500 font-mono py-2 border-b border-gray-200 last:border-b-0"
+                      >
+                        {notification.params.content}
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              </>
+            )}
+          </div>
+        </div>
+      </div>
+      <div className="p-4 border-t">
+        <div className="flex items-center justify-between">
+          <Select
+            value={theme}
+            onValueChange={(value: string) =>
+              setTheme(value as "system" | "light" | "dark")
+            }
+          >
+            <SelectTrigger className="w-[100px]" id="theme-select">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="system">System</SelectItem>
+              <SelectItem value="light">Light</SelectItem>
+              <SelectItem value="dark">Dark</SelectItem>
+            </SelectContent>
+          </Select>
+
+          <div className="flex items-center space-x-2">
+            <Button variant="ghost" title="Inspector Documentation" asChild>
+              <a
+                href="https://modelcontextprotocol.io/docs/tools/inspector"
+                target="_blank"
+                rel="noopener noreferrer"
+              >
+                <CircleHelp className="w-4 h-4 text-foreground" />
+              </a>
+            </Button>
+            <Button variant="ghost" title="Debugging Guide" asChild>
+              <a
+                href="https://modelcontextprotocol.io/docs/tools/debugging"
+                target="_blank"
+                rel="noopener noreferrer"
+              >
+                <Bug className="w-4 h-4 text-foreground" />
+              </a>
+            </Button>
+            <Button
+              variant="ghost"
+              title="Report bugs or contribute on GitHub"
+              asChild
+            >
+              <a
+                href="https://github.com/modelcontextprotocol/inspector"
+                target="_blank"
+                rel="noopener noreferrer"
+              >
+                <Github className="w-4 h-4 text-foreground" />
+              </a>
+            </Button>
+          </div>
+        </div>
+      </div>
     </div>
-  </div>
-);
+  );
+};
 
 export default Sidebar;

client/src/components/ToolsTab.tsx

@@ -1,121 +1,300 @@
-import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
+import { Alert, AlertDescription } from "@/components/ui/alert";
 import { Button } from "@/components/ui/button";
+import { Checkbox } from "@/components/ui/checkbox";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { TabsContent } from "@/components/ui/tabs";
-import { ListToolsResult, Tool } from "@modelcontextprotocol/sdk/types.js";
-import { AlertCircle, Send } from "lucide-react";
-import { useState } from "react";
+import { Textarea } from "@/components/ui/textarea";
+import DynamicJsonForm from "./DynamicJsonForm";
+import type { JsonValue, JsonSchemaType } from "@/utils/jsonUtils";
+import { generateDefaultValue } from "@/utils/schemaUtils";
+import {
+  CallToolResultSchema,
+  CompatibilityCallToolResult,
+  ListToolsResult,
+  Tool,
+} from "@modelcontextprotocol/sdk/types.js";
+import { Loader2, Send } from "lucide-react";
+import { useEffect, useState } from "react";
 import ListPane from "./ListPane";
+import JsonView from "./JsonView";
 
 const ToolsTab = ({
   tools,
   listTools,
+  clearTools,
   callTool,
   selectedTool,
   setSelectedTool,
   toolResult,
   nextCursor,
-  error,
 }: {
   tools: Tool[];
   listTools: () => void;
-  callTool: (name: string, params: Record<string, unknown>) => void;
+  clearTools: () => void;
+  callTool: (name: string, params: Record<string, unknown>) => Promise<void>;
   selectedTool: Tool | null;
-  setSelectedTool: (tool: Tool) => void;
-  toolResult: string;
+  setSelectedTool: (tool: Tool | null) => void;
+  toolResult: CompatibilityCallToolResult | null;
   nextCursor: ListToolsResult["nextCursor"];
   error: string | null;
 }) => {
   const [params, setParams] = useState<Record<string, unknown>>({});
+  const [isToolRunning, setIsToolRunning] = useState(false);
+
+  useEffect(() => {
+    const params = Object.entries(
+      selectedTool?.inputSchema.properties ?? [],
+    ).map(([key, value]) => [
+      key,
+      generateDefaultValue(value as JsonSchemaType),
+    ]);
+    setParams(Object.fromEntries(params));
+  }, [selectedTool]);
+
+  const renderToolResult = () => {
+    if (!toolResult) return null;
+
+    if ("content" in toolResult) {
+      const parsedResult = CallToolResultSchema.safeParse(toolResult);
+      if (!parsedResult.success) {
+        return (
+          <>
+            <h4 className="font-semibold mb-2">Invalid Tool Result:</h4>
+            <JsonView data={toolResult} />
+            <h4 className="font-semibold mb-2">Errors:</h4>
+            {parsedResult.error.errors.map((error, idx) => (
+              <JsonView data={error} key={idx} />
+            ))}
+          </>
+        );
+      }
+      const structuredResult = parsedResult.data;
+      const isError = structuredResult.isError ?? false;
+
+      return (
+        <>
+          <h4 className="font-semibold mb-2">
+            Tool Result:{" "}
+            {isError ? (
+              <span className="text-red-600 font-semibold">Error</span>
+            ) : (
+              <span className="text-green-600 font-semibold">Success</span>
+            )}
+          </h4>
+          {structuredResult.content.map((item, index) => (
+            <div key={index} className="mb-2">
+              {item.type === "text" && (
+                <JsonView data={item.text} isError={isError} />
+              )}
+              {item.type === "image" && (
+                <img
+                  src={`data:${item.mimeType};base64,${item.data}`}
+                  alt="Tool result image"
+                  className="max-w-full h-auto"
+                />
+              )}
+              {item.type === "resource" &&
+                (item.resource?.mimeType?.startsWith("audio/") ? (
+                  <audio
+                    controls
+                    src={`data:${item.resource.mimeType};base64,${item.resource.blob}`}
+                    className="w-full"
+                  >
+                    <p>Your browser does not support audio playback</p>
+                  </audio>
+                ) : (
+                  <JsonView data={item.resource} />
+                ))}
+            </div>
+          ))}
+        </>
+      );
+    } else if ("toolResult" in toolResult) {
+      return (
+        <>
+          <h4 className="font-semibold mb-2">Tool Result (Legacy):</h4>
+
+          <JsonView data={toolResult.toolResult} />
+        </>
+      );
+    }
+  };
 
   return (
-    <TabsContent value="tools" className="grid grid-cols-2 gap-4">
-      <ListPane
-        items={tools}
-        listItems={listTools}
-        setSelectedItem={setSelectedTool}
-        renderItem={(tool) => (
-          <>
-            <span className="flex-1">{tool.name}</span>
-            <span className="text-sm text-gray-500 text-right">
-              {tool.description}
-            </span>
-          </>
-        )}
-        title="Tools"
-        buttonText={nextCursor ? "List More Tools" : "List Tools"}
-        isButtonDisabled={!nextCursor && tools.length > 0}
-      />
-
-      <div className="bg-white rounded-lg shadow">
-        <div className="p-4 border-b border-gray-200">
-          <h3 className="font-semibold">
-            {selectedTool ? selectedTool.name : "Select a tool"}
-          </h3>
-        </div>
-        <div className="p-4">
-          {error ? (
-            <Alert variant="destructive">
-              <AlertCircle className="h-4 w-4" />
-              <AlertTitle>Error</AlertTitle>
-              <AlertDescription>{error}</AlertDescription>
-            </Alert>
-          ) : selectedTool ? (
-            <div className="space-y-4">
-              <p className="text-sm text-gray-600">
-                {selectedTool.description}
-              </p>
-              {Object.entries(selectedTool.inputSchema.properties ?? []).map(
-                ([key, value]) => (
-                  <div key={key}>
-                    <Label
-                      htmlFor={key}
-                      className="block text-sm font-medium text-gray-700"
-                    >
-                      {key}
-                    </Label>
-                    <Input
-                      // @ts-expect-error value type is currently unknown
-                      type={value.type === "number" ? "number" : "text"}
-                      id={key}
-                      name={key}
-                      // @ts-expect-error value type is currently unknown
-                      placeholder={value.description}
-                      onChange={(e) =>
-                        setParams({
-                          ...params,
-                          [key]:
-                            // @ts-expect-error value type is currently unknown
-                            value.type === "number"
-                              ? Number(e.target.value)
-                              : e.target.value,
-                        })
-                      }
-                    />
-                  </div>
-                ),
-              )}
-              <Button onClick={() => callTool(selectedTool.name, params)}>
-                <Send className="w-4 h-4 mr-2" />
-                Run Tool
-              </Button>
-              {toolResult && (
-                <>
-                  <h4 className="font-semibold mb-2">Tool Result:</h4>
-                  <pre className="bg-gray-50 p-4 rounded text-sm overflow-auto max-h-64">
-                    {toolResult}
-                  </pre>
-                </>
-              )}
-            </div>
-          ) : (
-            <Alert>
-              <AlertDescription>
-                Select a tool from the list to view its details and run it
-              </AlertDescription>
-            </Alert>
+    <TabsContent value="tools">
+      <div className="grid grid-cols-2 gap-4">
+        <ListPane
+          items={tools}
+          listItems={listTools}
+          clearItems={() => {
+            clearTools();
+            setSelectedTool(null);
+          }}
+          setSelectedItem={setSelectedTool}
+          renderItem={(tool) => (
+            <>
+              <span className="flex-1">{tool.name}</span>
+              <span className="text-sm text-gray-500 text-right">
+                {tool.description}
+              </span>
+            </>
           )}
+          title="Tools"
+          buttonText={nextCursor ? "List More Tools" : "List Tools"}
+          isButtonDisabled={!nextCursor && tools.length > 0}
+        />
+
+        <div className="bg-card rounded-lg shadow">
+          <div className="p-4 border-b border-gray-200 dark:border-gray-800">
+            <h3 className="font-semibold">
+              {selectedTool ? selectedTool.name : "Select a tool"}
+            </h3>
+          </div>
+          <div className="p-4">
+            {selectedTool ? (
+              <div className="space-y-4">
+                <p className="text-sm text-gray-600">
+                  {selectedTool.description}
+                </p>
+                {Object.entries(selectedTool.inputSchema.properties ?? []).map(
+                  ([key, value]) => {
+                    const prop = value as JsonSchemaType;
+                    return (
+                      <div key={key}>
+                        <Label
+                          htmlFor={key}
+                          className="block text-sm font-medium text-gray-700"
+                        >
+                          {key}
+                        </Label>
+                        {prop.type === "boolean" ? (
+                          <div className="flex items-center space-x-2 mt-2">
+                            <Checkbox
+                              id={key}
+                              name={key}
+                              checked={!!params[key]}
+                              onCheckedChange={(checked: boolean) =>
+                                setParams({
+                                  ...params,
+                                  [key]: checked,
+                                })
+                              }
+                            />
+                            <label
+                              htmlFor={key}
+                              className="text-sm font-medium text-gray-700 dark:text-gray-300"
+                            >
+                              {prop.description || "Toggle this option"}
+                            </label>
+                          </div>
+                        ) : prop.type === "string" ? (
+                          <Textarea
+                            id={key}
+                            name={key}
+                            placeholder={prop.description}
+                            value={(params[key] as string) ?? ""}
+                            onChange={(e) =>
+                              setParams({
+                                ...params,
+                                [key]: e.target.value,
+                              })
+                            }
+                            className="mt-1"
+                          />
+                        ) : prop.type === "object" || prop.type === "array" ? (
+                          <div className="mt-1">
+                            <DynamicJsonForm
+                              schema={{
+                                type: prop.type,
+                                properties: prop.properties,
+                                description: prop.description,
+                                items: prop.items,
+                              }}
+                              value={
+                                (params[key] as JsonValue) ??
+                                generateDefaultValue(prop)
+                              }
+                              onChange={(newValue: JsonValue) => {
+                                setParams({
+                                  ...params,
+                                  [key]: newValue,
+                                });
+                              }}
+                            />
+                          </div>
+                        ) : prop.type === "number" ||
+                          prop.type === "integer" ? (
+                          <Input
+                            type="number"
+                            id={key}
+                            name={key}
+                            placeholder={prop.description}
+                            value={(params[key] as string) ?? ""}
+                            onChange={(e) =>
+                              setParams({
+                                ...params,
+                                [key]: Number(e.target.value),
+                              })
+                            }
+                            className="mt-1"
+                          />
+                        ) : (
+                          <div className="mt-1">
+                            <DynamicJsonForm
+                              schema={{
+                                type: prop.type,
+                                properties: prop.properties,
+                                description: prop.description,
+                                items: prop.items,
+                              }}
+                              value={params[key] as JsonValue}
+                              onChange={(newValue: JsonValue) => {
+                                setParams({
+                                  ...params,
+                                  [key]: newValue,
+                                });
+                              }}
+                            />
+                          </div>
+                        )}
+                      </div>
+                    );
+                  },
+                )}
+                <Button
+                  onClick={async () => {
+                    try {
+                      setIsToolRunning(true);
+                      await callTool(selectedTool.name, params);
+                    } finally {
+                      setIsToolRunning(false);
+                    }
+                  }}
+                  disabled={isToolRunning}
+                >
+                  {isToolRunning ? (
+                    <>
+                      <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+                      Running...
+                    </>
+                  ) : (
+                    <>
+                      <Send className="w-4 h-4 mr-2" />
+                      Run Tool
+                    </>
+                  )}
+                </Button>
+                {toolResult && renderToolResult()}
+              </div>
+            ) : (
+              <Alert>
+                <AlertDescription>
+                  Select a tool from the list to view its details and run it
+                </AlertDescription>
+              </Alert>
+            )}
+          </div>
         </div>
       </div>
     </TabsContent>

client/src/components/__tests__/DynamicJsonForm.test.tsx

@@ -0,0 +1,139 @@
+import { render, screen, fireEvent, waitFor } from "@testing-library/react";
+import { describe, it, expect, jest } from "@jest/globals";
+import DynamicJsonForm from "../DynamicJsonForm";
+import type { JsonSchemaType } from "@/utils/jsonUtils";
+
+describe("DynamicJsonForm String Fields", () => {
+  const renderForm = (props = {}) => {
+    const defaultProps = {
+      schema: {
+        type: "string" as const,
+        description: "Test string field",
+      } satisfies JsonSchemaType,
+      value: undefined,
+      onChange: jest.fn(),
+    };
+    return render(<DynamicJsonForm {...defaultProps} {...props} />);
+  };
+
+  describe("Type Validation", () => {
+    it("should handle numeric input as string type", () => {
+      const onChange = jest.fn();
+      renderForm({ onChange });
+
+      const input = screen.getByRole("textbox");
+      fireEvent.change(input, { target: { value: "123321" } });
+
+      expect(onChange).toHaveBeenCalledWith("123321");
+      // Verify the value is a string, not a number
+      expect(typeof onChange.mock.calls[0][0]).toBe("string");
+    });
+
+    it("should render as text input, not number input", () => {
+      renderForm();
+      const input = screen.getByRole("textbox");
+      expect(input).toHaveProperty("type", "text");
+    });
+  });
+});
+
+describe("DynamicJsonForm Integer Fields", () => {
+  const renderForm = (props = {}) => {
+    const defaultProps = {
+      schema: {
+        type: "integer" as const,
+        description: "Test integer field",
+      } satisfies JsonSchemaType,
+      value: undefined,
+      onChange: jest.fn(),
+    };
+    return render(<DynamicJsonForm {...defaultProps} {...props} />);
+  };
+
+  describe("Basic Operations", () => {
+    it("should render number input with step=1", () => {
+      renderForm();
+      const input = screen.getByRole("spinbutton");
+      expect(input).toHaveProperty("type", "number");
+      expect(input).toHaveProperty("step", "1");
+    });
+
+    it("should pass integer values to onChange", () => {
+      const onChange = jest.fn();
+      renderForm({ onChange });
+
+      const input = screen.getByRole("spinbutton");
+      fireEvent.change(input, { target: { value: "42" } });
+
+      expect(onChange).toHaveBeenCalledWith(42);
+      // Verify the value is a number, not a string
+      expect(typeof onChange.mock.calls[0][0]).toBe("number");
+    });
+
+    it("should not pass string values to onChange", () => {
+      const onChange = jest.fn();
+      renderForm({ onChange });
+
+      const input = screen.getByRole("spinbutton");
+      fireEvent.change(input, { target: { value: "abc" } });
+
+      expect(onChange).not.toHaveBeenCalled();
+    });
+  });
+
+  describe("Edge Cases", () => {
+    it("should handle non-numeric input by not calling onChange", () => {
+      const onChange = jest.fn();
+      renderForm({ onChange });
+
+      const input = screen.getByRole("spinbutton");
+      fireEvent.change(input, { target: { value: "abc" } });
+
+      expect(onChange).not.toHaveBeenCalled();
+    });
+  });
+});
+
+describe("DynamicJsonForm Complex Fields", () => {
+  const renderForm = (props = {}) => {
+    const defaultProps = {
+      schema: {
+        type: "object",
+        properties: {
+          // The simplified JsonSchemaType does not accept oneOf fields
+          // But they exist in the more-complete JsonSchema7Type
+          nested: { oneOf: [{ type: "string" }, { type: "integer" }] },
+        },
+      } as unknown as JsonSchemaType,
+      value: undefined,
+      onChange: jest.fn(),
+    };
+    return render(<DynamicJsonForm {...defaultProps} {...props} />);
+  };
+
+  describe("Basic Operations", () => {
+    it("should render textbox and autoformat button, but no switch-to-form button", () => {
+      renderForm();
+      const input = screen.getByRole("textbox");
+      expect(input).toHaveProperty("type", "textarea");
+      const buttons = screen.getAllByRole("button");
+      expect(buttons).toHaveLength(1);
+      expect(buttons[0]).toHaveProperty("textContent", "Format JSON");
+    });
+
+    it("should pass changed values to onChange", () => {
+      const onChange = jest.fn();
+      renderForm({ onChange });
+
+      const input = screen.getByRole("textbox");
+      fireEvent.change(input, {
+        target: { value: `{ "nested": "i am string" }` },
+      });
+
+      // The onChange handler is debounced when using the JSON view, so we need to wait a little bit
+      waitFor(() => {
+        expect(onChange).toHaveBeenCalledWith(`{ "nested": "i am string" }`);
+      });
+    });
+  });
+});

client/src/components/__tests__/Sidebar.test.tsx

@@ -0,0 +1,625 @@
+import { render, screen, fireEvent } from "@testing-library/react";
+import "@testing-library/jest-dom";
+import { describe, it, beforeEach, jest } from "@jest/globals";
+import Sidebar from "../Sidebar";
+import { DEFAULT_INSPECTOR_CONFIG } from "@/lib/constants";
+import { InspectorConfig } from "@/lib/configurationTypes";
+import { TooltipProvider } from "@/components/ui/tooltip";
+
+// Mock theme hook
+jest.mock("../../lib/useTheme", () => ({
+  __esModule: true,
+  default: () => ["light", jest.fn()],
+}));
+
+describe("Sidebar Environment Variables", () => {
+  const defaultProps = {
+    connectionStatus: "disconnected" as const,
+    transportType: "stdio" as const,
+    setTransportType: jest.fn(),
+    command: "",
+    setCommand: jest.fn(),
+    args: "",
+    setArgs: jest.fn(),
+    sseUrl: "",
+    setSseUrl: jest.fn(),
+    env: {},
+    setEnv: jest.fn(),
+    bearerToken: "",
+    setBearerToken: jest.fn(),
+    onConnect: jest.fn(),
+    onDisconnect: jest.fn(),
+    stdErrNotifications: [],
+    clearStdErrNotifications: jest.fn(),
+    logLevel: "info" as const,
+    sendLogLevelRequest: jest.fn(),
+    loggingSupported: true,
+    config: DEFAULT_INSPECTOR_CONFIG,
+    setConfig: jest.fn(),
+  };
+
+  const renderSidebar = (props = {}) => {
+    return render(
+      <TooltipProvider>
+        <Sidebar {...defaultProps} {...props} />
+      </TooltipProvider>,
+    );
+  };
+
+  const openEnvVarsSection = () => {
+    const button = screen.getByTestId("env-vars-button");
+    fireEvent.click(button);
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe("Basic Operations", () => {
+    it("should add a new environment variable", () => {
+      const setEnv = jest.fn();
+      renderSidebar({ env: {}, setEnv });
+
+      openEnvVarsSection();
+
+      const addButton = screen.getByText("Add Environment Variable");
+      fireEvent.click(addButton);
+
+      expect(setEnv).toHaveBeenCalledWith({ "": "" });
+    });
+
+    it("should remove an environment variable", () => {
+      const setEnv = jest.fn();
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const removeButton = screen.getByRole("button", { name: "×" });
+      fireEvent.click(removeButton);
+
+      expect(setEnv).toHaveBeenCalledWith({});
+    });
+
+    it("should update environment variable value", () => {
+      const setEnv = jest.fn();
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const valueInput = screen.getByDisplayValue("test_value");
+      fireEvent.change(valueInput, { target: { value: "new_value" } });
+
+      expect(setEnv).toHaveBeenCalledWith({ TEST_KEY: "new_value" });
+    });
+
+    it("should toggle value visibility", () => {
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv });
+
+      openEnvVarsSection();
+
+      const valueInput = screen.getByDisplayValue("test_value");
+      expect(valueInput).toHaveProperty("type", "password");
+
+      const toggleButton = screen.getByRole("button", { name: /show value/i });
+      fireEvent.click(toggleButton);
+
+      expect(valueInput).toHaveProperty("type", "text");
+    });
+  });
+
+  describe("Authentication", () => {
+    const openAuthSection = () => {
+      const button = screen.getByTestId("auth-button");
+      fireEvent.click(button);
+    };
+
+    it("should update bearer token", () => {
+      const setBearerToken = jest.fn();
+      renderSidebar({
+        bearerToken: "",
+        setBearerToken,
+        transportType: "sse", // Set transport type to SSE
+      });
+
+      openAuthSection();
+
+      const tokenInput = screen.getByTestId("bearer-token-input");
+      fireEvent.change(tokenInput, { target: { value: "new_token" } });
+
+      expect(setBearerToken).toHaveBeenCalledWith("new_token");
+    });
+
+    it("should update header name", () => {
+      const setHeaderName = jest.fn();
+      renderSidebar({
+        headerName: "Authorization",
+        setHeaderName,
+        transportType: "sse",
+      });
+
+      openAuthSection();
+
+      const headerInput = screen.getByTestId("header-input");
+      fireEvent.change(headerInput, { target: { value: "X-Custom-Auth" } });
+
+      expect(setHeaderName).toHaveBeenCalledWith("X-Custom-Auth");
+    });
+
+    it("should clear bearer token", () => {
+      const setBearerToken = jest.fn();
+      renderSidebar({
+        bearerToken: "existing_token",
+        setBearerToken,
+        transportType: "sse", // Set transport type to SSE
+      });
+
+      openAuthSection();
+
+      const tokenInput = screen.getByTestId("bearer-token-input");
+      fireEvent.change(tokenInput, { target: { value: "" } });
+
+      expect(setBearerToken).toHaveBeenCalledWith("");
+    });
+
+    it("should properly render bearer token input", () => {
+      const { rerender } = renderSidebar({
+        bearerToken: "existing_token",
+        transportType: "sse", // Set transport type to SSE
+      });
+
+      openAuthSection();
+
+      // Token input should be a password field
+      const tokenInput = screen.getByTestId("bearer-token-input");
+      expect(tokenInput).toHaveProperty("type", "password");
+
+      // Update the token
+      fireEvent.change(tokenInput, { target: { value: "new_token" } });
+
+      // Rerender with updated token
+      rerender(
+        <TooltipProvider>
+          <Sidebar
+            {...defaultProps}
+            bearerToken="new_token"
+            transportType="sse"
+          />
+        </TooltipProvider>,
+      );
+
+      // Token input should still exist after update
+      expect(screen.getByTestId("bearer-token-input")).toBeInTheDocument();
+    });
+
+    it("should maintain token visibility state after update", () => {
+      const { rerender } = renderSidebar({
+        bearerToken: "existing_token",
+        transportType: "sse", // Set transport type to SSE
+      });
+
+      openAuthSection();
+
+      // Token input should be a password field
+      const tokenInput = screen.getByTestId("bearer-token-input");
+      expect(tokenInput).toHaveProperty("type", "password");
+
+      // Update the token
+      fireEvent.change(tokenInput, { target: { value: "new_token" } });
+
+      // Rerender with updated token
+      rerender(
+        <TooltipProvider>
+          <Sidebar
+            {...defaultProps}
+            bearerToken="new_token"
+            transportType="sse"
+          />
+        </TooltipProvider>,
+      );
+
+      // Token input should still exist after update
+      expect(screen.getByTestId("bearer-token-input")).toBeInTheDocument();
+    });
+
+    it("should maintain header name when toggling auth section", () => {
+      renderSidebar({
+        headerName: "X-API-Key",
+        transportType: "sse",
+      });
+
+      // Open auth section
+      openAuthSection();
+
+      // Verify header name is displayed
+      const headerInput = screen.getByTestId("header-input");
+      expect(headerInput).toHaveValue("X-API-Key");
+
+      // Close auth section
+      const authButton = screen.getByTestId("auth-button");
+      fireEvent.click(authButton);
+
+      // Reopen auth section
+      fireEvent.click(authButton);
+
+      // Verify header name is still preserved
+      expect(screen.getByTestId("header-input")).toHaveValue("X-API-Key");
+    });
+
+    it("should display default header name when not specified", () => {
+      renderSidebar({
+        headerName: undefined,
+        transportType: "sse",
+      });
+
+      openAuthSection();
+
+      const headerInput = screen.getByTestId("header-input");
+      expect(headerInput).toHaveAttribute("placeholder", "Authorization");
+    });
+  });
+
+  describe("Key Editing", () => {
+    it("should maintain order when editing first key", () => {
+      const setEnv = jest.fn();
+      const initialEnv = {
+        FIRST_KEY: "first_value",
+        SECOND_KEY: "second_value",
+        THIRD_KEY: "third_value",
+      };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const firstKeyInput = screen.getByDisplayValue("FIRST_KEY");
+      fireEvent.change(firstKeyInput, { target: { value: "NEW_FIRST_KEY" } });
+
+      expect(setEnv).toHaveBeenCalledWith({
+        NEW_FIRST_KEY: "first_value",
+        SECOND_KEY: "second_value",
+        THIRD_KEY: "third_value",
+      });
+    });
+
+    it("should maintain order when editing middle key", () => {
+      const setEnv = jest.fn();
+      const initialEnv = {
+        FIRST_KEY: "first_value",
+        SECOND_KEY: "second_value",
+        THIRD_KEY: "third_value",
+      };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const middleKeyInput = screen.getByDisplayValue("SECOND_KEY");
+      fireEvent.change(middleKeyInput, { target: { value: "NEW_SECOND_KEY" } });
+
+      expect(setEnv).toHaveBeenCalledWith({
+        FIRST_KEY: "first_value",
+        NEW_SECOND_KEY: "second_value",
+        THIRD_KEY: "third_value",
+      });
+    });
+
+    it("should maintain order when editing last key", () => {
+      const setEnv = jest.fn();
+      const initialEnv = {
+        FIRST_KEY: "first_value",
+        SECOND_KEY: "second_value",
+        THIRD_KEY: "third_value",
+      };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const lastKeyInput = screen.getByDisplayValue("THIRD_KEY");
+      fireEvent.change(lastKeyInput, { target: { value: "NEW_THIRD_KEY" } });
+
+      expect(setEnv).toHaveBeenCalledWith({
+        FIRST_KEY: "first_value",
+        SECOND_KEY: "second_value",
+        NEW_THIRD_KEY: "third_value",
+      });
+    });
+
+    it("should maintain order during key editing", () => {
+      const setEnv = jest.fn();
+      const initialEnv = {
+        KEY1: "value1",
+        KEY2: "value2",
+      };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      // Type "NEW_" one character at a time
+      const key1Input = screen.getByDisplayValue("KEY1");
+      "NEW_".split("").forEach((char) => {
+        fireEvent.change(key1Input, {
+          target: { value: char + "KEY1".slice(1) },
+        });
+      });
+
+      // Verify the last setEnv call maintains the order
+      const lastCall = setEnv.mock.calls[
+        setEnv.mock.calls.length - 1
+      ][0] as Record<string, string>;
+      const entries = Object.entries(lastCall);
+
+      // The values should stay with their original keys
+      expect(entries[0][1]).toBe("value1"); // First entry should still have value1
+      expect(entries[1][1]).toBe("value2"); // Second entry should still have value2
+    });
+  });
+
+  describe("Multiple Operations", () => {
+    it("should maintain state after multiple key edits", () => {
+      const setEnv = jest.fn();
+      const initialEnv = {
+        FIRST_KEY: "first_value",
+        SECOND_KEY: "second_value",
+      };
+      const { rerender } = renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      // First key edit
+      const firstKeyInput = screen.getByDisplayValue("FIRST_KEY");
+      fireEvent.change(firstKeyInput, { target: { value: "NEW_FIRST_KEY" } });
+
+      // Get the updated env from the first setEnv call
+      const updatedEnv = setEnv.mock.calls[0][0] as Record<string, string>;
+
+      // Rerender with the updated env
+      rerender(
+        <TooltipProvider>
+          <Sidebar {...defaultProps} env={updatedEnv} setEnv={setEnv} />
+        </TooltipProvider>,
+      );
+
+      // Second key edit
+      const secondKeyInput = screen.getByDisplayValue("SECOND_KEY");
+      fireEvent.change(secondKeyInput, { target: { value: "NEW_SECOND_KEY" } });
+
+      // Verify the final state matches what we expect
+      expect(setEnv).toHaveBeenLastCalledWith({
+        NEW_FIRST_KEY: "first_value",
+        NEW_SECOND_KEY: "second_value",
+      });
+    });
+
+    it("should maintain visibility state after key edit", () => {
+      const initialEnv = { TEST_KEY: "test_value" };
+      const { rerender } = renderSidebar({ env: initialEnv });
+
+      openEnvVarsSection();
+
+      // Show the value
+      const toggleButton = screen.getByRole("button", { name: /show value/i });
+      fireEvent.click(toggleButton);
+
+      const valueInput = screen.getByDisplayValue("test_value");
+      expect(valueInput).toHaveProperty("type", "text");
+
+      // Edit the key
+      const keyInput = screen.getByDisplayValue("TEST_KEY");
+      fireEvent.change(keyInput, { target: { value: "NEW_KEY" } });
+
+      // Rerender with updated env
+      rerender(
+        <TooltipProvider>
+          <Sidebar {...defaultProps} env={{ NEW_KEY: "test_value" }} />
+        </TooltipProvider>,
+      );
+
+      // Value should still be visible
+      const updatedValueInput = screen.getByDisplayValue("test_value");
+      expect(updatedValueInput).toHaveProperty("type", "text");
+    });
+  });
+
+  describe("Edge Cases", () => {
+    it("should handle empty key", () => {
+      const setEnv = jest.fn();
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const keyInput = screen.getByDisplayValue("TEST_KEY");
+      fireEvent.change(keyInput, { target: { value: "" } });
+
+      expect(setEnv).toHaveBeenCalledWith({ "": "test_value" });
+    });
+
+    it("should handle special characters in key", () => {
+      const setEnv = jest.fn();
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const keyInput = screen.getByDisplayValue("TEST_KEY");
+      fireEvent.change(keyInput, { target: { value: "TEST-KEY@123" } });
+
+      expect(setEnv).toHaveBeenCalledWith({ "TEST-KEY@123": "test_value" });
+    });
+
+    it("should handle unicode characters", () => {
+      const setEnv = jest.fn();
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const keyInput = screen.getByDisplayValue("TEST_KEY");
+      fireEvent.change(keyInput, { target: { value: "TEST_🔑" } });
+
+      expect(setEnv).toHaveBeenCalledWith({ "TEST_🔑": "test_value" });
+    });
+
+    it("should handle very long key names", () => {
+      const setEnv = jest.fn();
+      const initialEnv = { TEST_KEY: "test_value" };
+      renderSidebar({ env: initialEnv, setEnv });
+
+      openEnvVarsSection();
+
+      const keyInput = screen.getByDisplayValue("TEST_KEY");
+      const longKey = "A".repeat(100);
+      fireEvent.change(keyInput, { target: { value: longKey } });
+
+      expect(setEnv).toHaveBeenCalledWith({ [longKey]: "test_value" });
+    });
+  });
+
+  describe("Configuration Operations", () => {
+    const openConfigSection = () => {
+      const button = screen.getByTestId("config-button");
+      fireEvent.click(button);
+    };
+
+    it("should update MCP server request timeout", () => {
+      const setConfig = jest.fn();
+      renderSidebar({ config: DEFAULT_INSPECTOR_CONFIG, setConfig });
+
+      openConfigSection();
+
+      const timeoutInput = screen.getByTestId(
+        "MCP_SERVER_REQUEST_TIMEOUT-input",
+      );
+      fireEvent.change(timeoutInput, { target: { value: "5000" } });
+
+      expect(setConfig).toHaveBeenCalledWith(
+        expect.objectContaining({
+          MCP_SERVER_REQUEST_TIMEOUT: {
+            label: "Request Timeout",
+            description: "Timeout for requests to the MCP server (ms)",
+            value: 5000,
+          },
+        }),
+      );
+    });
+
+    it("should update MCP server proxy address", () => {
+      const setConfig = jest.fn();
+      renderSidebar({ config: DEFAULT_INSPECTOR_CONFIG, setConfig });
+
+      openConfigSection();
+
+      const proxyAddressInput = screen.getByTestId(
+        "MCP_PROXY_FULL_ADDRESS-input",
+      );
+      fireEvent.change(proxyAddressInput, {
+        target: { value: "http://localhost:8080" },
+      });
+
+      expect(setConfig).toHaveBeenCalledWith(
+        expect.objectContaining({
+          MCP_PROXY_FULL_ADDRESS: {
+            label: "Inspector Proxy Address",
+            description:
+              "Set this if you are running the MCP Inspector Proxy on a non-default address. Example: http://10.1.1.22:5577",
+            value: "http://localhost:8080",
+          },
+        }),
+      );
+    });
+
+    it("should update max total timeout", () => {
+      const setConfig = jest.fn();
+      renderSidebar({ config: DEFAULT_INSPECTOR_CONFIG, setConfig });
+
+      openConfigSection();
+
+      const maxTotalTimeoutInput = screen.getByTestId(
+        "MCP_REQUEST_MAX_TOTAL_TIMEOUT-input",
+      );
+      fireEvent.change(maxTotalTimeoutInput, {
+        target: { value: "10000" },
+      });
+
+      expect(setConfig).toHaveBeenCalledWith(
+        expect.objectContaining({
+          MCP_REQUEST_MAX_TOTAL_TIMEOUT: {
+            label: "Maximum Total Timeout",
+            description:
+              "Maximum total timeout for requests sent to the MCP server (ms) (Use with progress notifications)",
+            value: 10000,
+          },
+        }),
+      );
+    });
+
+    it("should handle invalid timeout values entered by user", () => {
+      const setConfig = jest.fn();
+      renderSidebar({ config: DEFAULT_INSPECTOR_CONFIG, setConfig });
+
+      openConfigSection();
+
+      const timeoutInput = screen.getByTestId(
+        "MCP_SERVER_REQUEST_TIMEOUT-input",
+      );
+      fireEvent.change(timeoutInput, { target: { value: "abc1" } });
+
+      expect(setConfig).toHaveBeenCalledWith(
+        expect.objectContaining({
+          MCP_SERVER_REQUEST_TIMEOUT: {
+            label: "Request Timeout",
+            description: "Timeout for requests to the MCP server (ms)",
+            value: 0,
+          },
+        }),
+      );
+    });
+
+    it("should maintain configuration state after multiple updates", () => {
+      const setConfig = jest.fn();
+      const { rerender } = renderSidebar({
+        config: DEFAULT_INSPECTOR_CONFIG,
+        setConfig,
+      });
+
+      openConfigSection();
+      // First update
+      const timeoutInput = screen.getByTestId(
+        "MCP_SERVER_REQUEST_TIMEOUT-input",
+      );
+      fireEvent.change(timeoutInput, { target: { value: "5000" } });
+
+      // Get the updated config from the first setConfig call
+      const updatedConfig = setConfig.mock.calls[0][0] as InspectorConfig;
+
+      // Rerender with the updated config
+      rerender(
+        <TooltipProvider>
+          <Sidebar
+            {...defaultProps}
+            config={updatedConfig}
+            setConfig={setConfig}
+          />
+        </TooltipProvider>,
+      );
+
+      // Second update
+      const updatedTimeoutInput = screen.getByTestId(
+        "MCP_SERVER_REQUEST_TIMEOUT-input",
+      );
+      fireEvent.change(updatedTimeoutInput, { target: { value: "3000" } });
+
+      // Verify the final state matches what we expect
+      expect(setConfig).toHaveBeenLastCalledWith(
+        expect.objectContaining({
+          MCP_SERVER_REQUEST_TIMEOUT: {
+            label: "Request Timeout",
+            description: "Timeout for requests to the MCP server (ms)",
+            value: 3000,
+          },
+        }),
+      );
+    });
+  });
+});

client/src/components/__tests__/ToolsTab.test.tsx

@@ -0,0 +1,144 @@
+import { render, screen, fireEvent, act } from "@testing-library/react";
+import { describe, it, expect, jest } from "@jest/globals";
+import "@testing-library/jest-dom";
+import ToolsTab from "../ToolsTab";
+import { Tool } from "@modelcontextprotocol/sdk/types.js";
+import { Tabs } from "@/components/ui/tabs";
+
+describe("ToolsTab", () => {
+  const mockTools: Tool[] = [
+    {
+      name: "tool1",
+      description: "First tool",
+      inputSchema: {
+        type: "object" as const,
+        properties: {
+          num: { type: "number" as const },
+        },
+      },
+    },
+    {
+      name: "tool3",
+      description: "Integer tool",
+      inputSchema: {
+        type: "object" as const,
+        properties: {
+          count: { type: "integer" as const },
+        },
+      },
+    },
+    {
+      name: "tool2",
+      description: "Second tool",
+      inputSchema: {
+        type: "object" as const,
+        properties: {
+          num: { type: "number" as const },
+        },
+      },
+    },
+  ];
+
+  const defaultProps = {
+    tools: mockTools,
+    listTools: jest.fn(),
+    clearTools: jest.fn(),
+    callTool: jest.fn(async () => {}),
+    selectedTool: null,
+    setSelectedTool: jest.fn(),
+    toolResult: null,
+    nextCursor: "",
+    error: null,
+  };
+
+  const renderToolsTab = (props = {}) => {
+    return render(
+      <Tabs defaultValue="tools">
+        <ToolsTab {...defaultProps} {...props} />
+      </Tabs>,
+    );
+  };
+
+  it("should reset input values when switching tools", async () => {
+    const { rerender } = renderToolsTab({
+      selectedTool: mockTools[0],
+    });
+
+    // Enter a value in the first tool's input
+    const input = screen.getByRole("spinbutton") as HTMLInputElement;
+    await act(async () => {
+      fireEvent.change(input, { target: { value: "42" } });
+    });
+    expect(input.value).toBe("42");
+
+    // Switch to second tool
+    rerender(
+      <Tabs defaultValue="tools">
+        <ToolsTab {...defaultProps} selectedTool={mockTools[2]} />
+      </Tabs>,
+    );
+
+    // Verify input is reset
+    const newInput = screen.getByRole("spinbutton") as HTMLInputElement;
+    expect(newInput.value).toBe("");
+  });
+
+  it("should handle integer type inputs", async () => {
+    renderToolsTab({
+      selectedTool: mockTools[1], // Use the tool with integer type
+    });
+
+    const input = screen.getByRole("spinbutton", {
+      name: /count/i,
+    }) as HTMLInputElement;
+    expect(input).toHaveProperty("type", "number");
+    fireEvent.change(input, { target: { value: "42" } });
+    expect(input.value).toBe("42");
+
+    const submitButton = screen.getByRole("button", { name: /run tool/i });
+    await act(async () => {
+      fireEvent.click(submitButton);
+    });
+
+    expect(defaultProps.callTool).toHaveBeenCalledWith(mockTools[1].name, {
+      count: 42,
+    });
+  });
+
+  it("should disable button and change text while tool is running", async () => {
+    // Create a promise that we can resolve later
+    let resolvePromise: ((value: unknown) => void) | undefined;
+    const mockPromise = new Promise((resolve) => {
+      resolvePromise = resolve;
+    });
+
+    // Mock callTool to return our promise
+    const mockCallTool = jest.fn().mockReturnValue(mockPromise);
+
+    renderToolsTab({
+      selectedTool: mockTools[0],
+      callTool: mockCallTool,
+    });
+
+    const submitButton = screen.getByRole("button", { name: /run tool/i });
+    expect(submitButton.getAttribute("disabled")).toBeNull();
+
+    // Click the button and verify immediate state changes
+    await act(async () => {
+      fireEvent.click(submitButton);
+    });
+
+    // Verify button is disabled and text changed
+    expect(submitButton.getAttribute("disabled")).not.toBeNull();
+    expect(submitButton.textContent).toBe("Running...");
+
+    // Resolve the promise to simulate tool completion
+    await act(async () => {
+      if (resolvePromise) {
+        await resolvePromise({});
+      }
+    });
+
+    expect(submitButton.getAttribute("disabled")).toBeNull();
+  });
+});

client/src/components/__tests__/samplingRequest.test.tsx

@@ -0,0 +1,73 @@
+import { render, screen, fireEvent } from "@testing-library/react";
+import SamplingRequest from "../SamplingRequest";
+import { PendingRequest } from "../SamplingTab";
+
+const mockRequest: PendingRequest = {
+  id: 1,
+  request: {
+    method: "sampling/createMessage",
+    params: {
+      messages: [
+        {
+          role: "user",
+          content: {
+            type: "text",
+            text: "What files are in the current directory?",
+          },
+        },
+      ],
+      systemPrompt: "You are a helpful file system assistant.",
+      includeContext: "thisServer",
+      maxTokens: 100,
+    },
+  },
+};
+
+describe("Form to handle sampling response", () => {
+  const mockOnApprove = jest.fn();
+  const mockOnReject = jest.fn();
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("should call onApprove with correct text content when Approve button is clicked", () => {
+    render(
+      <SamplingRequest
+        request={mockRequest}
+        onApprove={mockOnApprove}
+        onReject={mockOnReject}
+      />,
+    );
+
+    // Click the Approve button
+    fireEvent.click(screen.getByRole("button", { name: /approve/i }));
+
+    // Assert that onApprove is called with the correct arguments
+    expect(mockOnApprove).toHaveBeenCalledWith(mockRequest.id, {
+      model: "stub-model",
+      stopReason: "endTurn",
+      role: "assistant",
+      content: {
+        type: "text",
+        text: "",
+      },
+    });
+  });
+
+  it("should call onReject with correct request id when Reject button is clicked", () => {
+    render(
+      <SamplingRequest
+        request={mockRequest}
+        onApprove={mockOnApprove}
+        onReject={mockOnReject}
+      />,
+    );
+
+    // Click the Approve button
+    fireEvent.click(screen.getByRole("button", { name: /Reject/i }));
+
+    // Assert that onApprove is called with the correct arguments
+    expect(mockOnReject).toHaveBeenCalledWith(mockRequest.id);
+  });
+});

client/src/components/__tests__/samplingTab.test.tsx

@@ -0,0 +1,55 @@
+import { render, screen } from "@testing-library/react";
+import { Tabs } from "@/components/ui/tabs";
+import SamplingTab, { PendingRequest } from "../SamplingTab";
+
+describe("Sampling tab", () => {
+  const mockOnApprove = jest.fn();
+  const mockOnReject = jest.fn();
+
+  const renderSamplingTab = (pendingRequests: PendingRequest[]) =>
+    render(
+      <Tabs defaultValue="sampling">
+        <SamplingTab
+          pendingRequests={pendingRequests}
+          onApprove={mockOnApprove}
+          onReject={mockOnReject}
+        />
+      </Tabs>,
+    );
+
+  it("should render 'No pending requests' when there are no pending requests", () => {
+    renderSamplingTab([]);
+    expect(
+      screen.getByText(
+        "When the server requests LLM sampling, requests will appear here for approval.",
+      ),
+    ).toBeTruthy();
+    expect(screen.findByText("No pending requests")).toBeTruthy();
+  });
+
+  it("should render the correct number of requests", () => {
+    renderSamplingTab(
+      Array.from({ length: 5 }, (_, i) => ({
+        id: i,
+        request: {
+          method: "sampling/createMessage",
+          params: {
+            messages: [
+              {
+                role: "user",
+                content: {
+                  type: "text",
+                  text: "What files are in the current directory?",
+                },
+              },
+            ],
+            systemPrompt: "You are a helpful file system assistant.",
+            includeContext: "thisServer",
+            maxTokens: 100,
+          },
+        },
+      })),
+    );
+    expect(screen.getAllByTestId("sampling-request").length).toBe(5);
+  });
+});

client/src/components/ui/alert.tsx

@@ -1,7 +1,7 @@
-import * as React from "react"
-import { cva, type VariantProps } from "class-variance-authority"
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
 const alertVariants = cva(
   "relative w-full rounded-lg border px-4 py-3 text-sm [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground [&>svg~*]:pl-7",
@@ -16,8 +16,8 @@ const alertVariants = cva(
     defaultVariants: {
       variant: "default",
     },
-  }
-)
+  },
+);
 
 const Alert = React.forwardRef<
   HTMLDivElement,
@@ -29,8 +29,8 @@ const Alert = React.forwardRef<
     className={cn(alertVariants({ variant }), className)}
     {...props}
   />
-))
-Alert.displayName = "Alert"
+));
+Alert.displayName = "Alert";
 
 const AlertTitle = React.forwardRef<
   HTMLParagraphElement,
@@ -41,8 +41,8 @@ const AlertTitle = React.forwardRef<
     className={cn("mb-1 font-medium leading-none tracking-tight", className)}
     {...props}
   />
-))
-AlertTitle.displayName = "AlertTitle"
+));
+AlertTitle.displayName = "AlertTitle";
 
 const AlertDescription = React.forwardRef<
   HTMLParagraphElement,
@@ -53,7 +53,7 @@ const AlertDescription = React.forwardRef<
     className={cn("text-sm [&_p]:leading-relaxed", className)}
     {...props}
   />
-))
-AlertDescription.displayName = "AlertDescription"
+));
+AlertDescription.displayName = "AlertDescription";
 
-export { Alert, AlertTitle, AlertDescription }
+export { Alert, AlertTitle, AlertDescription };

client/src/components/ui/button.tsx

@@ -1,8 +1,8 @@
-import * as React from "react"
-import { Slot } from "@radix-ui/react-slot"
-import { cva, type VariantProps } from "class-variance-authority"
+import * as React from "react";
+import { Slot } from "@radix-ui/react-slot";
+import { cva, type VariantProps } from "class-variance-authority";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
 const buttonVariants = cva(
   "inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50",
@@ -10,7 +10,7 @@ const buttonVariants = cva(
     variants: {
       variant: {
         default:
-          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
+          "bg-primary text-primary-foreground shadow hover:bg-primary/90 dark:bg-gray-800 dark:text-white dark:hover:bg-gray-700",
         destructive:
           "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
         outline:
@@ -31,27 +31,27 @@ const buttonVariants = cva(
       variant: "default",
       size: "default",
     },
-  }
-)
+  },
+);
 
 export interface ButtonProps
   extends React.ButtonHTMLAttributes<HTMLButtonElement>,
     VariantProps<typeof buttonVariants> {
-  asChild?: boolean
+  asChild?: boolean;
 }
 
 const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
   ({ className, variant, size, asChild = false, ...props }, ref) => {
-    const Comp = asChild ? Slot : "button"
+    const Comp = asChild ? Slot : "button";
     return (
       <Comp
         className={cn(buttonVariants({ variant, size, className }))}
         ref={ref}
         {...props}
       />
-    )
-  }
-)
-Button.displayName = "Button"
+    );
+  },
+);
+Button.displayName = "Button";
 
-export { Button, buttonVariants }
+export { Button };

client/src/components/ui/checkbox.tsx

@@ -0,0 +1,30 @@
+"use client";
+
+import * as React from "react";
+import * as CheckboxPrimitive from "@radix-ui/react-checkbox";
+import { Check } from "lucide-react";
+
+import { cn } from "@/lib/utils";
+
+const Checkbox = React.forwardRef<
+  React.ElementRef<typeof CheckboxPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof CheckboxPrimitive.Root>
+>(({ className, ...props }, ref) => (
+  <CheckboxPrimitive.Root
+    ref={ref}
+    className={cn(
+      "peer h-4 w-4 shrink-0 rounded-sm border border-primary ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground",
+      className,
+    )}
+    {...props}
+  >
+    <CheckboxPrimitive.Indicator
+      className={cn("flex items-center justify-center text-current")}
+    >
+      <Check className="h-4 w-4" />
+    </CheckboxPrimitive.Indicator>
+  </CheckboxPrimitive.Root>
+));
+Checkbox.displayName = CheckboxPrimitive.Root.displayName;
+
+export { Checkbox };

client/src/components/ui/combobox.tsx

@@ -0,0 +1,97 @@
+import React from "react";
+import { Check, ChevronsUpDown } from "lucide-react";
+import { cn } from "@/lib/utils";
+import { Button } from "@/components/ui/button";
+import {
+  Command,
+  CommandEmpty,
+  CommandGroup,
+  CommandInput,
+  CommandItem,
+} from "@/components/ui/command";
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from "@/components/ui/popover";
+
+interface ComboboxProps {
+  value: string;
+  onChange: (value: string) => void;
+  onInputChange: (value: string) => void;
+  options: string[];
+  placeholder?: string;
+  emptyMessage?: string;
+  id?: string;
+}
+
+export function Combobox({
+  value,
+  onChange,
+  onInputChange,
+  options = [],
+  placeholder = "Select...",
+  emptyMessage = "No results found.",
+  id,
+}: ComboboxProps) {
+  const [open, setOpen] = React.useState(false);
+
+  const handleSelect = React.useCallback(
+    (option: string) => {
+      onChange(option);
+      setOpen(false);
+    },
+    [onChange],
+  );
+
+  const handleInputChange = React.useCallback(
+    (value: string) => {
+      onInputChange(value);
+    },
+    [onInputChange],
+  );
+
+  return (
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <Button
+          variant="outline"
+          role="combobox"
+          aria-expanded={open}
+          aria-controls={id}
+          className="w-full justify-between"
+        >
+          {value || placeholder}
+          <ChevronsUpDown className="ml-2 h-4 w-4 shrink-0 opacity-50" />
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent className="w-full p-0" align="start">
+        <Command shouldFilter={false} id={id}>
+          <CommandInput
+            placeholder={placeholder}
+            value={value}
+            onValueChange={handleInputChange}
+          />
+          <CommandEmpty>{emptyMessage}</CommandEmpty>
+          <CommandGroup>
+            {options.map((option) => (
+              <CommandItem
+                key={option}
+                value={option}
+                onSelect={() => handleSelect(option)}
+              >
+                <Check
+                  className={cn(
+                    "mr-2 h-4 w-4",
+                    value === option ? "opacity-100" : "opacity-0",
+                  )}
+                />
+                {option}
+              </CommandItem>
+            ))}
+          </CommandGroup>
+        </Command>
+      </PopoverContent>
+    </Popover>
+  );
+}

client/src/components/ui/command.tsx

@@ -0,0 +1,150 @@
+import * as React from "react";
+import { type DialogProps } from "@radix-ui/react-dialog";
+import { Command as CommandPrimitive } from "cmdk";
+import { cn } from "@/lib/utils";
+import { Dialog, DialogContent } from "@/components/ui/dialog";
+import { MagnifyingGlassIcon } from "@radix-ui/react-icons";
+
+const Command = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive>
+>(({ className, ...props }, ref) => (
+  <CommandPrimitive
+    ref={ref}
+    className={cn(
+      "flex h-full w-full flex-col overflow-hidden rounded-md bg-popover text-popover-foreground",
+      className,
+    )}
+    {...props}
+  />
+));
+Command.displayName = CommandPrimitive.displayName;
+
+const CommandDialog = ({ children, ...props }: DialogProps) => {
+  return (
+    <Dialog {...props}>
+      <DialogContent className="overflow-hidden p-0">
+        <Command className="[&_[cmdk-group-heading]]:px-2 [&_[cmdk-group-heading]]:font-medium [&_[cmdk-group-heading]]:text-muted-foreground [&_[cmdk-group]:not([hidden])_~[cmdk-group]]:pt-0 [&_[cmdk-group]]:px-2 [&_[cmdk-input-wrapper]_svg]:h-5 [&_[cmdk-input-wrapper]_svg]:w-5 [&_[cmdk-input]]:h-12 [&_[cmdk-item]]:px-2 [&_[cmdk-item]]:py-3 [&_[cmdk-item]_svg]:h-5 [&_[cmdk-item]_svg]:w-5">
+          {children}
+        </Command>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+const CommandInput = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive.Input>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive.Input>
+>(({ className, ...props }, ref) => (
+  <div className="flex items-center border-b px-3" cmdk-input-wrapper="">
+    <MagnifyingGlassIcon className="mr-2 h-4 w-4 shrink-0 opacity-50" />
+    <CommandPrimitive.Input
+      ref={ref}
+      className={cn(
+        "flex h-10 w-full rounded-md bg-transparent py-3 text-sm outline-none placeholder:text-muted-foreground disabled:cursor-not-allowed disabled:opacity-50",
+        className,
+      )}
+      {...props}
+    />
+  </div>
+));
+
+CommandInput.displayName = CommandPrimitive.Input.displayName;
+
+const CommandList = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive.List>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive.List>
+>(({ className, ...props }, ref) => (
+  <CommandPrimitive.List
+    ref={ref}
+    className={cn("max-h-[300px] overflow-y-auto overflow-x-hidden", className)}
+    {...props}
+  />
+));
+
+CommandList.displayName = CommandPrimitive.List.displayName;
+
+const CommandEmpty = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive.Empty>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive.Empty>
+>((props, ref) => (
+  <CommandPrimitive.Empty
+    ref={ref}
+    className="py-6 text-center text-sm"
+    {...props}
+  />
+));
+
+CommandEmpty.displayName = CommandPrimitive.Empty.displayName;
+
+const CommandGroup = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive.Group>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive.Group>
+>(({ className, ...props }, ref) => (
+  <CommandPrimitive.Group
+    ref={ref}
+    className={cn(
+      "overflow-hidden p-1 text-foreground [&_[cmdk-group-heading]]:px-2 [&_[cmdk-group-heading]]:py-1.5 [&_[cmdk-group-heading]]:text-xs [&_[cmdk-group-heading]]:font-medium [&_[cmdk-group-heading]]:text-muted-foreground",
+      className,
+    )}
+    {...props}
+  />
+));
+
+CommandGroup.displayName = CommandPrimitive.Group.displayName;
+
+const CommandSeparator = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive.Separator>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive.Separator>
+>(({ className, ...props }, ref) => (
+  <CommandPrimitive.Separator
+    ref={ref}
+    className={cn("-mx-1 h-px bg-border", className)}
+    {...props}
+  />
+));
+CommandSeparator.displayName = CommandPrimitive.Separator.displayName;
+
+const CommandItem = React.forwardRef<
+  React.ElementRef<typeof CommandPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof CommandPrimitive.Item>
+>(({ className, ...props }, ref) => (
+  <CommandPrimitive.Item
+    ref={ref}
+    className={cn(
+      "relative flex cursor-default gap-2 select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none data-[disabled=true]:pointer-events-none data-[selected=true]:bg-accent data-[selected=true]:text-accent-foreground data-[disabled=true]:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+      className,
+    )}
+    {...props}
+  />
+));
+
+CommandItem.displayName = CommandPrimitive.Item.displayName;
+
+const CommandShortcut = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLSpanElement>) => {
+  return (
+    <span
+      className={cn(
+        "ml-auto text-xs tracking-widest text-muted-foreground",
+        className,
+      )}
+      {...props}
+    />
+  );
+};
+CommandShortcut.displayName = "CommandShortcut";
+
+export {
+  Command,
+  CommandDialog,
+  CommandInput,
+  CommandList,
+  CommandEmpty,
+  CommandGroup,
+  CommandItem,
+  CommandShortcut,
+  CommandSeparator,
+};

client/src/components/ui/dialog.tsx

@@ -0,0 +1,121 @@
+"use client";
+
+import * as React from "react";
+import * as DialogPrimitive from "@radix-ui/react-dialog";
+import { cn } from "@/lib/utils";
+import { Cross2Icon } from "@radix-ui/react-icons";
+
+const Dialog = DialogPrimitive.Root;
+
+const DialogTrigger = DialogPrimitive.Trigger;
+
+const DialogPortal = DialogPrimitive.Portal;
+
+const DialogClose = DialogPrimitive.Close;
+
+const DialogOverlay = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Overlay
+    ref={ref}
+    className={cn(
+      "fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      className,
+    )}
+    {...props}
+  />
+));
+DialogOverlay.displayName = DialogPrimitive.Overlay.displayName;
+
+const DialogContent = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content>
+>(({ className, children, ...props }, ref) => (
+  <DialogPortal>
+    <DialogOverlay />
+    <DialogPrimitive.Content
+      ref={ref}
+      className={cn(
+        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        className,
+      )}
+      {...props}
+    >
+      {children}
+      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
+        <Cross2Icon className="h-4 w-4" />
+        <span className="sr-only">Close</span>
+      </DialogPrimitive.Close>
+    </DialogPrimitive.Content>
+  </DialogPortal>
+));
+DialogContent.displayName = DialogPrimitive.Content.displayName;
+
+const DialogHeader = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col space-y-1.5 text-center sm:text-left",
+      className,
+    )}
+    {...props}
+  />
+);
+DialogHeader.displayName = "DialogHeader";
+
+const DialogFooter = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
+      className,
+    )}
+    {...props}
+  />
+);
+DialogFooter.displayName = "DialogFooter";
+
+const DialogTitle = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Title
+    ref={ref}
+    className={cn(
+      "text-lg font-semibold leading-none tracking-tight",
+      className,
+    )}
+    {...props}
+  />
+));
+DialogTitle.displayName = DialogPrimitive.Title.displayName;
+
+const DialogDescription = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Description
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+));
+DialogDescription.displayName = DialogPrimitive.Description.displayName;
+
+export {
+  Dialog,
+  DialogPortal,
+  DialogOverlay,
+  DialogTrigger,
+  DialogClose,
+  DialogContent,
+  DialogHeader,
+  DialogFooter,
+  DialogTitle,
+  DialogDescription,
+};

client/src/components/ui/input.tsx

@@ -1,9 +1,8 @@
-import * as React from "react"
+import * as React from "react";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
-export interface InputProps
-  extends React.InputHTMLAttributes<HTMLInputElement> {}
+export type InputProps = React.InputHTMLAttributes<HTMLInputElement>;
 
 const Input = React.forwardRef<HTMLInputElement, InputProps>(
   ({ className, type, ...props }, ref) => {
@@ -12,14 +11,14 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
         type={type}
         className={cn(
           "flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50",
-          className
+          className,
         )}
         ref={ref}
         {...props}
       />
-    )
-  }
-)
-Input.displayName = "Input"
+    );
+  },
+);
+Input.displayName = "Input";
 
-export { Input }
+export { Input };

client/src/components/ui/label.tsx

@@ -1,12 +1,12 @@
-import * as React from "react"
-import * as LabelPrimitive from "@radix-ui/react-label"
-import { cva, type VariantProps } from "class-variance-authority"
+import * as React from "react";
+import * as LabelPrimitive from "@radix-ui/react-label";
+import { cva, type VariantProps } from "class-variance-authority";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
 const labelVariants = cva(
-  "text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70"
-)
+  "text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70",
+);
 
 const Label = React.forwardRef<
   React.ElementRef<typeof LabelPrimitive.Root>,
@@ -18,7 +18,7 @@ const Label = React.forwardRef<
     className={cn(labelVariants(), className)}
     {...props}
   />
-))
-Label.displayName = LabelPrimitive.Root.displayName
+));
+Label.displayName = LabelPrimitive.Root.displayName;
 
-export { Label }
+export { Label };

client/src/components/ui/popover.tsx

@@ -0,0 +1,31 @@
+import * as React from "react";
+import * as PopoverPrimitive from "@radix-ui/react-popover";
+
+import { cn } from "@/lib/utils";
+
+const Popover = PopoverPrimitive.Root;
+
+const PopoverTrigger = PopoverPrimitive.Trigger;
+
+const PopoverAnchor = PopoverPrimitive.Anchor;
+
+const PopoverContent = React.forwardRef<
+  React.ElementRef<typeof PopoverPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof PopoverPrimitive.Content>
+>(({ className, align = "center", sideOffset = 4, ...props }, ref) => (
+  <PopoverPrimitive.Portal>
+    <PopoverPrimitive.Content
+      ref={ref}
+      align={align}
+      sideOffset={sideOffset}
+      className={cn(
+        "z-50 w-72 rounded-md border bg-popover p-4 text-popover-foreground shadow-md outline-none data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        className,
+      )}
+      {...props}
+    />
+  </PopoverPrimitive.Portal>
+));
+PopoverContent.displayName = PopoverPrimitive.Content.displayName;
+
+export { Popover, PopoverTrigger, PopoverContent, PopoverAnchor };

client/src/components/ui/select.tsx

@@ -1,19 +1,19 @@
-import * as React from "react"
+import * as React from "react";
 import {
   CaretSortIcon,
   CheckIcon,
   ChevronDownIcon,
   ChevronUpIcon,
-} from "@radix-ui/react-icons"
-import * as SelectPrimitive from "@radix-ui/react-select"
+} from "@radix-ui/react-icons";
+import * as SelectPrimitive from "@radix-ui/react-select";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
-const Select = SelectPrimitive.Root
+const Select = SelectPrimitive.Root;
 
-const SelectGroup = SelectPrimitive.Group
+const SelectGroup = SelectPrimitive.Group;
 
-const SelectValue = SelectPrimitive.Value
+const SelectValue = SelectPrimitive.Value;
 
 const SelectTrigger = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.Trigger>,
@@ -22,8 +22,8 @@ const SelectTrigger = React.forwardRef<
   <SelectPrimitive.Trigger
     ref={ref}
     className={cn(
-      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
-      className
+      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1 hover:border-[#646cff] hover:border-1",
+      className,
     )}
     {...props}
   >
@@ -32,8 +32,8 @@ const SelectTrigger = React.forwardRef<
       <CaretSortIcon className="h-4 w-4 opacity-50" />
     </SelectPrimitive.Icon>
   </SelectPrimitive.Trigger>
-))
-SelectTrigger.displayName = SelectPrimitive.Trigger.displayName
+));
+SelectTrigger.displayName = SelectPrimitive.Trigger.displayName;
 
 const SelectScrollUpButton = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.ScrollUpButton>,
@@ -43,14 +43,14 @@ const SelectScrollUpButton = React.forwardRef<
     ref={ref}
     className={cn(
       "flex cursor-default items-center justify-center py-1",
-      className
+      className,
     )}
     {...props}
   >
     <ChevronUpIcon />
   </SelectPrimitive.ScrollUpButton>
-))
-SelectScrollUpButton.displayName = SelectPrimitive.ScrollUpButton.displayName
+));
+SelectScrollUpButton.displayName = SelectPrimitive.ScrollUpButton.displayName;
 
 const SelectScrollDownButton = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.ScrollDownButton>,
@@ -60,15 +60,15 @@ const SelectScrollDownButton = React.forwardRef<
     ref={ref}
     className={cn(
       "flex cursor-default items-center justify-center py-1",
-      className
+      className,
     )}
     {...props}
   >
     <ChevronDownIcon />
   </SelectPrimitive.ScrollDownButton>
-))
+));
 SelectScrollDownButton.displayName =
-  SelectPrimitive.ScrollDownButton.displayName
+  SelectPrimitive.ScrollDownButton.displayName;
 
 const SelectContent = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.Content>,
@@ -81,7 +81,7 @@ const SelectContent = React.forwardRef<
         "relative z-50 max-h-96 min-w-[8rem] overflow-hidden rounded-md border bg-popover text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
         position === "popper" &&
           "data-[side=bottom]:translate-y-1 data-[side=left]:-translate-x-1 data-[side=right]:translate-x-1 data-[side=top]:-translate-y-1",
-        className
+        className,
       )}
       position={position}
       {...props}
@@ -91,7 +91,7 @@ const SelectContent = React.forwardRef<
         className={cn(
           "p-1",
           position === "popper" &&
-            "h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]"
+            "h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]",
         )}
       >
         {children}
@@ -99,8 +99,8 @@ const SelectContent = React.forwardRef<
       <SelectScrollDownButton />
     </SelectPrimitive.Content>
   </SelectPrimitive.Portal>
-))
-SelectContent.displayName = SelectPrimitive.Content.displayName
+));
+SelectContent.displayName = SelectPrimitive.Content.displayName;
 
 const SelectLabel = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.Label>,
@@ -111,8 +111,8 @@ const SelectLabel = React.forwardRef<
     className={cn("px-2 py-1.5 text-sm font-semibold", className)}
     {...props}
   />
-))
-SelectLabel.displayName = SelectPrimitive.Label.displayName
+));
+SelectLabel.displayName = SelectPrimitive.Label.displayName;
 
 const SelectItem = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.Item>,
@@ -122,7 +122,7 @@ const SelectItem = React.forwardRef<
     ref={ref}
     className={cn(
       "relative flex w-full cursor-default select-none items-center rounded-sm py-1.5 pl-2 pr-8 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
-      className
+      className,
     )}
     {...props}
   >
@@ -133,8 +133,8 @@ const SelectItem = React.forwardRef<
     </span>
     <SelectPrimitive.ItemText>{children}</SelectPrimitive.ItemText>
   </SelectPrimitive.Item>
-))
-SelectItem.displayName = SelectPrimitive.Item.displayName
+));
+SelectItem.displayName = SelectPrimitive.Item.displayName;
 
 const SelectSeparator = React.forwardRef<
   React.ElementRef<typeof SelectPrimitive.Separator>,
@@ -145,8 +145,8 @@ const SelectSeparator = React.forwardRef<
     className={cn("-mx-1 my-1 h-px bg-muted", className)}
     {...props}
   />
-))
-SelectSeparator.displayName = SelectPrimitive.Separator.displayName
+));
+SelectSeparator.displayName = SelectPrimitive.Separator.displayName;
 
 export {
   Select,
@@ -159,4 +159,4 @@ export {
   SelectSeparator,
   SelectScrollUpButton,
   SelectScrollDownButton,
-}
+};

client/src/components/ui/tabs.tsx

@@ -1,9 +1,9 @@
-import * as React from "react"
-import * as TabsPrimitive from "@radix-ui/react-tabs"
+import * as React from "react";
+import * as TabsPrimitive from "@radix-ui/react-tabs";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
-const Tabs = TabsPrimitive.Root
+const Tabs = TabsPrimitive.Root;
 
 const TabsList = React.forwardRef<
   React.ElementRef<typeof TabsPrimitive.List>,
@@ -13,12 +13,12 @@ const TabsList = React.forwardRef<
     ref={ref}
     className={cn(
       "inline-flex h-9 items-center justify-center rounded-lg bg-muted p-1 text-muted-foreground",
-      className
+      className,
     )}
     {...props}
   />
-))
-TabsList.displayName = TabsPrimitive.List.displayName
+));
+TabsList.displayName = TabsPrimitive.List.displayName;
 
 const TabsTrigger = React.forwardRef<
   React.ElementRef<typeof TabsPrimitive.Trigger>,
@@ -27,13 +27,13 @@ const TabsTrigger = React.forwardRef<
   <TabsPrimitive.Trigger
     ref={ref}
     className={cn(
-      "inline-flex items-center justify-center whitespace-nowrap rounded-md px-3 py-1 text-sm font-medium ring-offset-background transition-all focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 data-[state=active]:bg-background data-[state=active]:text-foreground data-[state=active]:shadow",
-      className
+      "inline-flex items-center justify-center whitespace-nowrap rounded-md px-3 py-1 text-sm font-medium ring-offset-background transition-all focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 bg-muted data-[state=active]:bg-background data-[state=active]:text-foreground data-[state=active]:shadow",
+      className,
     )}
     {...props}
   />
-))
-TabsTrigger.displayName = TabsPrimitive.Trigger.displayName
+));
+TabsTrigger.displayName = TabsPrimitive.Trigger.displayName;
 
 const TabsContent = React.forwardRef<
   React.ElementRef<typeof TabsPrimitive.Content>,
@@ -43,11 +43,11 @@ const TabsContent = React.forwardRef<
     ref={ref}
     className={cn(
       "mt-2 ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
-      className
+      className,
     )}
     {...props}
   />
-))
-TabsContent.displayName = TabsPrimitive.Content.displayName
+));
+TabsContent.displayName = TabsPrimitive.Content.displayName;
 
-export { Tabs, TabsList, TabsTrigger, TabsContent }
+export { Tabs, TabsList, TabsTrigger, TabsContent };

client/src/components/ui/textarea.tsx

@@ -1,9 +1,8 @@
-import * as React from "react"
+import * as React from "react";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
-export interface TextareaProps
-  extends React.TextareaHTMLAttributes<HTMLTextAreaElement> {}
+export type TextareaProps = React.TextareaHTMLAttributes<HTMLTextAreaElement>;
 
 const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
   ({ className, ...props }, ref) => {
@@ -11,14 +10,14 @@ const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
       <textarea
         className={cn(
           "flex min-h-[60px] w-full rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50",
-          className
+          className,
         )}
         ref={ref}
         {...props}
       />
-    )
-  }
-)
-Textarea.displayName = "Textarea"
+    );
+  },
+);
+Textarea.displayName = "Textarea";
 
-export { Textarea }
+export { Textarea };

client/src/components/ui/toast.tsx

@@ -0,0 +1,126 @@
+import * as React from "react";
+import * as ToastPrimitives from "@radix-ui/react-toast";
+import { cva, type VariantProps } from "class-variance-authority";
+import { cn } from "@/lib/utils";
+import { Cross2Icon } from "@radix-ui/react-icons";
+
+const ToastProvider = ToastPrimitives.Provider;
+
+const ToastViewport = React.forwardRef<
+  React.ElementRef<typeof ToastPrimitives.Viewport>,
+  React.ComponentPropsWithoutRef<typeof ToastPrimitives.Viewport>
+>(({ className, ...props }, ref) => (
+  <ToastPrimitives.Viewport
+    ref={ref}
+    className={cn(
+      "fixed top-0 z-[100] flex max-h-screen w-full flex-col-reverse p-4 sm:bottom-0 sm:right-0 sm:top-auto sm:flex-col md:max-w-[420px]",
+      className,
+    )}
+    {...props}
+  />
+));
+ToastViewport.displayName = ToastPrimitives.Viewport.displayName;
+
+const toastVariants = cva(
+  "group pointer-events-auto relative flex w-full items-center justify-between space-x-2 overflow-hidden rounded-md border p-4 pr-6 shadow-lg transition-all data-[swipe=cancel]:translate-x-0 data-[swipe=end]:translate-x-[var(--radix-toast-swipe-end-x)] data-[swipe=move]:translate-x-[var(--radix-toast-swipe-move-x)] data-[swipe=move]:transition-none data-[state=open]:animate-in data-[state=closed]:animate-out data-[swipe=end]:animate-out data-[state=closed]:fade-out-80 data-[state=closed]:slide-out-to-right-full data-[state=open]:slide-in-from-top-full data-[state=open]:sm:slide-in-from-bottom-full",
+  {
+    variants: {
+      variant: {
+        default: "border bg-background text-foreground",
+        destructive:
+          "destructive group border-destructive bg-destructive text-destructive-foreground",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  },
+);
+
+const Toast = React.forwardRef<
+  React.ElementRef<typeof ToastPrimitives.Root>,
+  React.ComponentPropsWithoutRef<typeof ToastPrimitives.Root> &
+    VariantProps<typeof toastVariants>
+>(({ className, variant, ...props }, ref) => {
+  return (
+    <ToastPrimitives.Root
+      ref={ref}
+      className={cn(toastVariants({ variant }), className)}
+      {...props}
+    />
+  );
+});
+Toast.displayName = ToastPrimitives.Root.displayName;
+
+const ToastAction = React.forwardRef<
+  React.ElementRef<typeof ToastPrimitives.Action>,
+  React.ComponentPropsWithoutRef<typeof ToastPrimitives.Action>
+>(({ className, ...props }, ref) => (
+  <ToastPrimitives.Action
+    ref={ref}
+    className={cn(
+      "inline-flex h-8 shrink-0 items-center justify-center rounded-md border bg-transparent px-3 text-sm font-medium transition-colors hover:bg-secondary focus:outline-none focus:ring-1 focus:ring-ring disabled:pointer-events-none disabled:opacity-50 group-[.destructive]:border-muted/40 group-[.destructive]:hover:border-destructive/30 group-[.destructive]:hover:bg-destructive group-[.destructive]:hover:text-destructive-foreground group-[.destructive]:focus:ring-destructive",
+      className,
+    )}
+    {...props}
+  />
+));
+ToastAction.displayName = ToastPrimitives.Action.displayName;
+
+const ToastClose = React.forwardRef<
+  React.ElementRef<typeof ToastPrimitives.Close>,
+  React.ComponentPropsWithoutRef<typeof ToastPrimitives.Close>
+>(({ className, ...props }, ref) => (
+  <ToastPrimitives.Close
+    ref={ref}
+    className={cn(
+      "absolute right-1 top-1 rounded-md p-1 text-foreground/50 opacity-0 transition-opacity hover:text-foreground focus:opacity-100 focus:outline-none focus:ring-1 group-hover:opacity-100 group-[.destructive]:text-red-300 group-[.destructive]:hover:text-red-50 group-[.destructive]:focus:ring-red-400 group-[.destructive]:focus:ring-offset-red-600",
+      className,
+    )}
+    toast-close=""
+    {...props}
+  >
+    <Cross2Icon className="h-4 w-4" />
+  </ToastPrimitives.Close>
+));
+ToastClose.displayName = ToastPrimitives.Close.displayName;
+
+const ToastTitle = React.forwardRef<
+  React.ElementRef<typeof ToastPrimitives.Title>,
+  React.ComponentPropsWithoutRef<typeof ToastPrimitives.Title>
+>(({ className, ...props }, ref) => (
+  <ToastPrimitives.Title
+    ref={ref}
+    className={cn("text-sm font-semibold [&+div]:text-xs", className)}
+    {...props}
+  />
+));
+ToastTitle.displayName = ToastPrimitives.Title.displayName;
+
+const ToastDescription = React.forwardRef<
+  React.ElementRef<typeof ToastPrimitives.Description>,
+  React.ComponentPropsWithoutRef<typeof ToastPrimitives.Description>
+>(({ className, ...props }, ref) => (
+  <ToastPrimitives.Description
+    ref={ref}
+    className={cn("text-sm opacity-90", className)}
+    {...props}
+  />
+));
+ToastDescription.displayName = ToastPrimitives.Description.displayName;
+
+type ToastProps = React.ComponentPropsWithoutRef<typeof Toast>;
+
+type ToastActionElement = React.ReactElement<typeof ToastAction>;
+
+export {
+  type ToastProps,
+  type ToastActionElement,
+  ToastProvider,
+  ToastViewport,
+  Toast,
+  ToastTitle,
+  ToastDescription,
+  ToastClose,
+  ToastAction,
+};

client/src/components/ui/toaster.tsx

@@ -0,0 +1,33 @@
+import { useToast } from "@/hooks/use-toast";
+import {
+  Toast,
+  ToastClose,
+  ToastDescription,
+  ToastProvider,
+  ToastTitle,
+  ToastViewport,
+} from "@/components/ui/toast";
+
+export function Toaster() {
+  const { toasts } = useToast();
+
+  return (
+    <ToastProvider>
+      {toasts.map(function ({ id, title, description, action, ...props }) {
+        return (
+          <Toast key={id} {...props}>
+            <div className="grid gap-1">
+              {title && <ToastTitle>{title}</ToastTitle>}
+              {description && (
+                <ToastDescription>{description}</ToastDescription>
+              )}
+            </div>
+            {action}
+            <ToastClose />
+          </Toast>
+        );
+      })}
+      <ToastViewport />
+    </ToastProvider>
+  );
+}

client/src/components/ui/tooltip.tsx

@@ -0,0 +1,30 @@
+"use client";
+
+import * as React from "react";
+import * as TooltipPrimitive from "@radix-ui/react-tooltip";
+
+import { cn } from "@/lib/utils";
+
+const TooltipProvider = TooltipPrimitive.Provider;
+
+const Tooltip = TooltipPrimitive.Root;
+
+const TooltipTrigger = TooltipPrimitive.Trigger;
+
+const TooltipContent = React.forwardRef<
+  React.ElementRef<typeof TooltipPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof TooltipPrimitive.Content>
+>(({ className, sideOffset = 4, ...props }, ref) => (
+  <TooltipPrimitive.Content
+    ref={ref}
+    sideOffset={sideOffset}
+    className={cn(
+      "z-50 overflow-hidden rounded-md border bg-popover px-3 py-1.5 text-sm text-popover-foreground shadow-md animate-in fade-in-0 zoom-in-95 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 origin-[--radix-tooltip-content-transform-origin]",
+      className,
+    )}
+    {...props}
+  />
+));
+TooltipContent.displayName = TooltipPrimitive.Content.displayName;
+
+export { Tooltip, TooltipTrigger, TooltipContent, TooltipProvider };

client/src/hooks/use-toast.ts

@@ -0,0 +1,191 @@
+"use client";
+
+// Inspired by react-hot-toast library
+import * as React from "react";
+
+import type { ToastActionElement, ToastProps } from "@/components/ui/toast";
+
+const TOAST_LIMIT = 1;
+const TOAST_REMOVE_DELAY = 1000000;
+
+type ToasterToast = ToastProps & {
+  id: string;
+  title?: React.ReactNode;
+  description?: React.ReactNode;
+  action?: ToastActionElement;
+};
+
+let count = 0;
+
+function genId() {
+  count = (count + 1) % Number.MAX_SAFE_INTEGER;
+  return count.toString();
+}
+
+const enum ActionType {
+  ADD_TOAST = "ADD_TOAST",
+  UPDATE_TOAST = "UPDATE_TOAST",
+  DISMISS_TOAST = "DISMISS_TOAST",
+  REMOVE_TOAST = "REMOVE_TOAST",
+}
+
+type Action =
+  | {
+      type: ActionType.ADD_TOAST;
+      toast: ToasterToast;
+    }
+  | {
+      type: ActionType.UPDATE_TOAST;
+      toast: Partial<ToasterToast>;
+    }
+  | {
+      type: ActionType.DISMISS_TOAST;
+      toastId?: ToasterToast["id"];
+    }
+  | {
+      type: ActionType.REMOVE_TOAST;
+      toastId?: ToasterToast["id"];
+    };
+
+interface State {
+  toasts: ToasterToast[];
+}
+
+const toastTimeouts = new Map<string, ReturnType<typeof setTimeout>>();
+
+const addToRemoveQueue = (toastId: string) => {
+  if (toastTimeouts.has(toastId)) {
+    return;
+  }
+
+  const timeout = setTimeout(() => {
+    toastTimeouts.delete(toastId);
+    dispatch({
+      type: ActionType.REMOVE_TOAST,
+      toastId: toastId,
+    });
+  }, TOAST_REMOVE_DELAY);
+
+  toastTimeouts.set(toastId, timeout);
+};
+
+export const reducer = (state: State, action: Action): State => {
+  switch (action.type) {
+    case ActionType.ADD_TOAST:
+      return {
+        ...state,
+        toasts: [action.toast, ...state.toasts].slice(0, TOAST_LIMIT),
+      };
+
+    case ActionType.UPDATE_TOAST:
+      return {
+        ...state,
+        toasts: state.toasts.map((t) =>
+          t.id === action.toast.id ? { ...t, ...action.toast } : t,
+        ),
+      };
+
+    case ActionType.DISMISS_TOAST: {
+      const { toastId } = action;
+
+      // ! Side effects ! - This could be extracted into a dismissToast() action,
+      // but I'll keep it here for simplicity
+      if (toastId) {
+        addToRemoveQueue(toastId);
+      } else {
+        state.toasts.forEach((toast) => {
+          addToRemoveQueue(toast.id);
+        });
+      }
+
+      return {
+        ...state,
+        toasts: state.toasts.map((t) =>
+          t.id === toastId || toastId === undefined
+            ? {
+                ...t,
+                open: false,
+              }
+            : t,
+        ),
+      };
+    }
+    case ActionType.REMOVE_TOAST:
+      if (action.toastId === undefined) {
+        return {
+          ...state,
+          toasts: [],
+        };
+      }
+      return {
+        ...state,
+        toasts: state.toasts.filter((t) => t.id !== action.toastId),
+      };
+  }
+};
+
+const listeners: Array<(state: State) => void> = [];
+
+let memoryState: State = { toasts: [] };
+
+function dispatch(action: Action) {
+  memoryState = reducer(memoryState, action);
+  listeners.forEach((listener) => {
+    listener(memoryState);
+  });
+}
+
+type Toast = Omit<ToasterToast, "id">;
+
+function toast({ ...props }: Toast) {
+  const id = genId();
+
+  const update = (props: ToasterToast) =>
+    dispatch({
+      type: ActionType.UPDATE_TOAST,
+      toast: { ...props, id },
+    });
+  const dismiss = () =>
+    dispatch({ type: ActionType.DISMISS_TOAST, toastId: id });
+
+  dispatch({
+    type: ActionType.ADD_TOAST,
+    toast: {
+      ...props,
+      id,
+      open: true,
+      onOpenChange: (open) => {
+        if (!open) dismiss();
+      },
+    },
+  });
+
+  return {
+    id: id,
+    dismiss,
+    update,
+  };
+}
+
+function useToast() {
+  const [state, setState] = React.useState<State>(memoryState);
+
+  React.useEffect(() => {
+    listeners.push(setState);
+    return () => {
+      const index = listeners.indexOf(setState);
+      if (index > -1) {
+        listeners.splice(index, 1);
+      }
+    };
+  }, [state]);
+
+  return {
+    ...state,
+    toast,
+    dismiss: (toastId?: string) =>
+      dispatch({ type: ActionType.DISMISS_TOAST, toastId }),
+  };
+}
+
+export { useToast, toast };

client/src/index.css

@@ -38,25 +38,6 @@ h1 {
   line-height: 1.1;
 }
 
-button {
-  border-radius: 8px;
-  border: 1px solid transparent;
-  padding: 0.6em 1.2em;
-  font-size: 1em;
-  font-weight: 500;
-  font-family: inherit;
-  background-color: #1a1a1a;
-  cursor: pointer;
-  transition: border-color 0.25s;
-}
-button:hover {
-  border-color: #646cff;
-}
-button:focus,
-button:focus-visible {
-  outline: 4px auto -webkit-focus-ring-color;
-}
-
 @media (prefers-color-scheme: light) {
   :root {
     color: #213547;
@@ -65,9 +46,6 @@ button:focus-visible {
   a:hover {
     color: #747bff;
   }
-  button {
-    background-color: #f9f9f9;
-  }
 }
 
 @layer base {

client/src/lib/auth.ts

@@ -0,0 +1,103 @@
+import { OAuthClientProvider } from "@modelcontextprotocol/sdk/client/auth.js";
+import {
+  OAuthClientInformationSchema,
+  OAuthClientInformation,
+  OAuthTokens,
+  OAuthTokensSchema,
+} from "@modelcontextprotocol/sdk/shared/auth.js";
+import { SESSION_KEYS, getServerSpecificKey } from "./constants";
+
+export class InspectorOAuthClientProvider implements OAuthClientProvider {
+  constructor(private serverUrl: string) {
+    // Save the server URL to session storage
+    sessionStorage.setItem(SESSION_KEYS.SERVER_URL, serverUrl);
+  }
+
+  get redirectUrl() {
+    return window.location.origin + "/oauth/callback";
+  }
+
+  get clientMetadata() {
+    return {
+      redirect_uris: [this.redirectUrl],
+      token_endpoint_auth_method: "none",
+      grant_types: ["authorization_code", "refresh_token"],
+      response_types: ["code"],
+      client_name: "MCP Inspector",
+      client_uri: "https://github.com/modelcontextprotocol/inspector",
+    };
+  }
+
+  async clientInformation() {
+    const key = getServerSpecificKey(
+      SESSION_KEYS.CLIENT_INFORMATION,
+      this.serverUrl,
+    );
+    const value = sessionStorage.getItem(key);
+    if (!value) {
+      return undefined;
+    }
+
+    return await OAuthClientInformationSchema.parseAsync(JSON.parse(value));
+  }
+
+  saveClientInformation(clientInformation: OAuthClientInformation) {
+    const key = getServerSpecificKey(
+      SESSION_KEYS.CLIENT_INFORMATION,
+      this.serverUrl,
+    );
+    sessionStorage.setItem(key, JSON.stringify(clientInformation));
+  }
+
+  async tokens() {
+    const key = getServerSpecificKey(SESSION_KEYS.TOKENS, this.serverUrl);
+    const tokens = sessionStorage.getItem(key);
+    if (!tokens) {
+      return undefined;
+    }
+
+    return await OAuthTokensSchema.parseAsync(JSON.parse(tokens));
+  }
+
+  saveTokens(tokens: OAuthTokens) {
+    const key = getServerSpecificKey(SESSION_KEYS.TOKENS, this.serverUrl);
+    sessionStorage.setItem(key, JSON.stringify(tokens));
+  }
+
+  redirectToAuthorization(authorizationUrl: URL) {
+    window.location.href = authorizationUrl.href;
+  }
+
+  saveCodeVerifier(codeVerifier: string) {
+    const key = getServerSpecificKey(
+      SESSION_KEYS.CODE_VERIFIER,
+      this.serverUrl,
+    );
+    sessionStorage.setItem(key, codeVerifier);
+  }
+
+  codeVerifier() {
+    const key = getServerSpecificKey(
+      SESSION_KEYS.CODE_VERIFIER,
+      this.serverUrl,
+    );
+    const verifier = sessionStorage.getItem(key);
+    if (!verifier) {
+      throw new Error("No code verifier saved for session");
+    }
+
+    return verifier;
+  }
+
+  clear() {
+    sessionStorage.removeItem(
+      getServerSpecificKey(SESSION_KEYS.CLIENT_INFORMATION, this.serverUrl),
+    );
+    sessionStorage.removeItem(
+      getServerSpecificKey(SESSION_KEYS.TOKENS, this.serverUrl),
+    );
+    sessionStorage.removeItem(
+      getServerSpecificKey(SESSION_KEYS.CODE_VERIFIER, this.serverUrl),
+    );
+  }
+}

client/src/lib/configurationTypes.ts

@@ -0,0 +1,36 @@
+export type ConfigItem = {
+  label: string;
+  description: string;
+  value: string | number | boolean;
+};
+
+/**
+ * Configuration interface for the MCP Inspector, including settings for the MCP Client,
+ * Proxy Server, and Inspector UI/UX.
+ *
+ * Note: Configuration related to which MCP Server to use or any other MCP Server
+ * specific settings are outside the scope of this interface as of now.
+ */
+export type InspectorConfig = {
+  /**
+   * Maximum time in milliseconds to wait for a response from the MCP server before timing out.
+   */
+  MCP_SERVER_REQUEST_TIMEOUT: ConfigItem;
+
+  /**
+   * Whether to reset the timeout on progress notifications. Useful for long-running operations that send periodic progress updates.
+   * Refer: https://spec.modelcontextprotocol.io/specification/2025-03-26/basic/utilities/progress/#progress-flow
+   */
+  MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS: ConfigItem;
+
+  /**
+   * Maximum total time in milliseconds to wait for a response from the MCP server before timing out. Used in conjunction with MCP_SERVER_REQUEST_TIMEOUT_RESET_ON_PROGRESS.
+   * Refer: https://spec.modelcontextprotocol.io/specification/2025-03-26/basic/utilities/progress/#progress-flow
+   */
+  MCP_REQUEST_MAX_TOTAL_TIMEOUT: ConfigItem;
+
+  /**
+   * The full address of the MCP Proxy Server, in case it is running on a non-default address. Example: http://10.1.1.22:5577
+   */
+  MCP_PROXY_FULL_ADDRESS: ConfigItem;
+};

client/src/lib/constants.ts

@@ -0,0 +1,55 @@
+import { InspectorConfig } from "./configurationTypes";
+
+// OAuth-related session storage keys
+export const SESSION_KEYS = {
+  CODE_VERIFIER: "mcp_code_verifier",
+  SERVER_URL: "mcp_server_url",
+  TOKENS: "mcp_tokens",
+  CLIENT_INFORMATION: "mcp_client_information",
+} as const;
+
+// Generate server-specific session storage keys
+export const getServerSpecificKey = (
+  baseKey: string,
+  serverUrl?: string,
+): string => {
+  if (!serverUrl) return baseKey;
+  return `[${serverUrl}] ${baseKey}`;
+};
+
+export type ConnectionStatus =
+  | "disconnected"
+  | "connected"
+  | "error"
+  | "error-connecting-to-proxy";
+
+export const DEFAULT_MCP_PROXY_LISTEN_PORT = "6277";
+
+/**
+ * Default configuration for the MCP Inspector, Currently persisted in local_storage in the Browser.
+ * Future plans: Provide json config file + Browser local_storage to override default values
+ **/
+export const DEFAULT_INSPECTOR_CONFIG: InspectorConfig = {
+  MCP_SERVER_REQUEST_TIMEOUT: {
+    label: "Request Timeout",
+    description: "Timeout for requests to the MCP server (ms)",
+    value: 10000,
+  },
+  MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS: {
+    label: "Reset Timeout on Progress",
+    description: "Reset timeout on progress notifications",
+    value: true,
+  },
+  MCP_REQUEST_MAX_TOTAL_TIMEOUT: {
+    label: "Maximum Total Timeout",
+    description:
+      "Maximum total timeout for requests sent to the MCP server (ms) (Use with progress notifications)",
+    value: 60000,
+  },
+  MCP_PROXY_FULL_ADDRESS: {
+    label: "Inspector Proxy Address",
+    description:
+      "Set this if you are running the MCP Inspector Proxy on a non-default address. Example: http://10.1.1.22:5577",
+    value: "",
+  },
+} as const;

client/src/lib/hooks/__tests__/useConnection.test.tsx

@@ -0,0 +1,166 @@
+import { renderHook, act } from "@testing-library/react";
+import { useConnection } from "../useConnection";
+import { z } from "zod";
+import { ClientRequest } from "@modelcontextprotocol/sdk/types.js";
+import { DEFAULT_INSPECTOR_CONFIG } from "../../constants";
+
+// Mock fetch
+global.fetch = jest.fn().mockResolvedValue({
+  json: () => Promise.resolve({ status: "ok" }),
+});
+
+// Mock the SDK dependencies
+const mockRequest = jest.fn().mockResolvedValue({ test: "response" });
+const mockClient = {
+  request: mockRequest,
+  notification: jest.fn(),
+  connect: jest.fn().mockResolvedValue(undefined),
+  close: jest.fn(),
+  getServerCapabilities: jest.fn(),
+  getServerVersion: jest.fn(),
+  getInstructions: jest.fn(),
+  setNotificationHandler: jest.fn(),
+  setRequestHandler: jest.fn(),
+};
+
+jest.mock("@modelcontextprotocol/sdk/client/index.js", () => ({
+  Client: jest.fn().mockImplementation(() => mockClient),
+}));
+
+jest.mock("@modelcontextprotocol/sdk/client/sse.js", () => ({
+  SSEClientTransport: jest.fn(),
+  SseError: jest.fn(),
+}));
+
+jest.mock("@modelcontextprotocol/sdk/client/auth.js", () => ({
+  auth: jest.fn().mockResolvedValue("AUTHORIZED"),
+}));
+
+// Mock the toast hook
+jest.mock("@/hooks/use-toast", () => ({
+  useToast: () => ({
+    toast: jest.fn(),
+  }),
+}));
+
+// Mock the auth provider
+jest.mock("../../auth", () => ({
+  InspectorOAuthClientProvider: jest.fn().mockImplementation(() => ({
+    tokens: jest.fn().mockResolvedValue({ access_token: "mock-token" }),
+  })),
+}));
+
+describe("useConnection", () => {
+  const defaultProps = {
+    transportType: "sse" as const,
+    command: "",
+    args: "",
+    sseUrl: "http://localhost:8080",
+    env: {},
+    config: DEFAULT_INSPECTOR_CONFIG,
+  };
+
+  describe("Request Configuration", () => {
+    beforeEach(() => {
+      jest.clearAllMocks();
+    });
+
+    test("uses the default config values in makeRequest", async () => {
+      const { result } = renderHook(() => useConnection(defaultProps));
+
+      // Connect the client
+      await act(async () => {
+        await result.current.connect();
+      });
+
+      // Wait for state update
+      await act(async () => {
+        await new Promise((resolve) => setTimeout(resolve, 0));
+      });
+
+      const mockRequest: ClientRequest = {
+        method: "ping",
+        params: {},
+      };
+
+      const mockSchema = z.object({
+        test: z.string(),
+      });
+
+      await act(async () => {
+        await result.current.makeRequest(mockRequest, mockSchema);
+      });
+
+      expect(mockClient.request).toHaveBeenCalledWith(
+        mockRequest,
+        mockSchema,
+        expect.objectContaining({
+          timeout: DEFAULT_INSPECTOR_CONFIG.MCP_SERVER_REQUEST_TIMEOUT.value,
+          maxTotalTimeout:
+            DEFAULT_INSPECTOR_CONFIG.MCP_REQUEST_MAX_TOTAL_TIMEOUT.value,
+          resetTimeoutOnProgress:
+            DEFAULT_INSPECTOR_CONFIG.MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS
+              .value,
+        }),
+      );
+    });
+
+    test("overrides the default config values when passed in options in makeRequest", async () => {
+      const { result } = renderHook(() => useConnection(defaultProps));
+
+      // Connect the client
+      await act(async () => {
+        await result.current.connect();
+      });
+
+      // Wait for state update
+      await act(async () => {
+        await new Promise((resolve) => setTimeout(resolve, 0));
+      });
+
+      const mockRequest: ClientRequest = {
+        method: "ping",
+        params: {},
+      };
+
+      const mockSchema = z.object({
+        test: z.string(),
+      });
+
+      await act(async () => {
+        await result.current.makeRequest(mockRequest, mockSchema, {
+          timeout: 1000,
+          maxTotalTimeout: 2000,
+          resetTimeoutOnProgress: false,
+        });
+      });
+
+      expect(mockClient.request).toHaveBeenCalledWith(
+        mockRequest,
+        mockSchema,
+        expect.objectContaining({
+          timeout: 1000,
+          maxTotalTimeout: 2000,
+          resetTimeoutOnProgress: false,
+        }),
+      );
+    });
+  });
+
+  test("throws error when mcpClient is not connected", async () => {
+    const { result } = renderHook(() => useConnection(defaultProps));
+
+    const mockRequest: ClientRequest = {
+      method: "ping",
+      params: {},
+    };
+
+    const mockSchema = z.object({
+      test: z.string(),
+    });
+
+    await expect(
+      result.current.makeRequest(mockRequest, mockSchema),
+    ).rejects.toThrow("MCP client not connected");
+  });
+});

client/src/lib/hooks/useCompletionState.ts

@@ -0,0 +1,129 @@
+import { useState, useCallback, useEffect, useRef, useMemo } from "react";
+import {
+  ResourceReference,
+  PromptReference,
+} from "@modelcontextprotocol/sdk/types.js";
+
+interface CompletionState {
+  completions: Record<string, string[]>;
+  loading: Record<string, boolean>;
+}
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+function debounce<T extends (...args: any[]) => PromiseLike<void>>(
+  func: T,
+  wait: number,
+): (...args: Parameters<T>) => void {
+  let timeout: ReturnType<typeof setTimeout>;
+  return (...args: Parameters<T>) => {
+    clearTimeout(timeout);
+    timeout = setTimeout(() => {
+      void func(...args);
+    }, wait);
+  };
+}
+
+export function useCompletionState(
+  handleCompletion: (
+    ref: ResourceReference | PromptReference,
+    argName: string,
+    value: string,
+    signal?: AbortSignal,
+  ) => Promise<string[]>,
+  completionsSupported: boolean = true,
+  debounceMs: number = 300,
+) {
+  const [state, setState] = useState<CompletionState>({
+    completions: {},
+    loading: {},
+  });
+
+  const abortControllerRef = useRef<AbortController | null>(null);
+
+  const cleanup = useCallback(() => {
+    if (abortControllerRef.current) {
+      abortControllerRef.current.abort();
+      abortControllerRef.current = null;
+    }
+  }, []);
+
+  // Cleanup on unmount
+  useEffect(() => {
+    return cleanup;
+  }, [cleanup]);
+
+  const clearCompletions = useCallback(() => {
+    cleanup();
+    setState({
+      completions: {},
+      loading: {},
+    });
+  }, [cleanup]);
+
+  const requestCompletions = useMemo(() => {
+    return debounce(
+      async (
+        ref: ResourceReference | PromptReference,
+        argName: string,
+        value: string,
+      ) => {
+        if (!completionsSupported) {
+          return;
+        }
+
+        cleanup();
+
+        const abortController = new AbortController();
+        abortControllerRef.current = abortController;
+
+        setState((prev) => ({
+          ...prev,
+          loading: { ...prev.loading, [argName]: true },
+        }));
+
+        try {
+          const values = await handleCompletion(
+            ref,
+            argName,
+            value,
+            abortController.signal,
+          );
+
+          if (!abortController.signal.aborted) {
+            setState((prev) => ({
+              ...prev,
+              completions: { ...prev.completions, [argName]: values },
+              loading: { ...prev.loading, [argName]: false },
+            }));
+          }
+        } catch {
+          if (!abortController.signal.aborted) {
+            setState((prev) => ({
+              ...prev,
+              loading: { ...prev.loading, [argName]: false },
+            }));
+          }
+        } finally {
+          if (abortControllerRef.current === abortController) {
+            abortControllerRef.current = null;
+          }
+        }
+      },
+      debounceMs,
+    );
+  }, [handleCompletion, completionsSupported, cleanup, debounceMs]);
+
+  // Clear completions when support status changes
+  useEffect(() => {
+    if (!completionsSupported) {
+      clearCompletions();
+    }
+  }, [completionsSupported, clearCompletions]);
+
+  return {
+    ...state,
+    clearCompletions,
+    requestCompletions,
+    completionsSupported,
+  };
+}

client/src/lib/hooks/useConnection.ts

@@ -0,0 +1,444 @@
+import { Client } from "@modelcontextprotocol/sdk/client/index.js";
+import {
+  SSEClientTransport,
+  SseError,
+} from "@modelcontextprotocol/sdk/client/sse.js";
+import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
+import {
+  ClientNotification,
+  ClientRequest,
+  CreateMessageRequestSchema,
+  ListRootsRequestSchema,
+  ResourceUpdatedNotificationSchema,
+  LoggingMessageNotificationSchema,
+  Request,
+  Result,
+  ServerCapabilities,
+  PromptReference,
+  ResourceReference,
+  McpError,
+  CompleteResultSchema,
+  ErrorCode,
+  CancelledNotificationSchema,
+  ResourceListChangedNotificationSchema,
+  ToolListChangedNotificationSchema,
+  PromptListChangedNotificationSchema,
+  Progress,
+} from "@modelcontextprotocol/sdk/types.js";
+import { RequestOptions } from "@modelcontextprotocol/sdk/shared/protocol.js";
+import { useState } from "react";
+import { useToast } from "@/hooks/use-toast";
+import { z } from "zod";
+import { ConnectionStatus } from "../constants";
+import { Notification, StdErrNotificationSchema } from "../notificationTypes";
+import { auth } from "@modelcontextprotocol/sdk/client/auth.js";
+import { InspectorOAuthClientProvider } from "../auth";
+import packageJson from "../../../package.json";
+import {
+  getMCPProxyAddress,
+  getMCPServerRequestMaxTotalTimeout,
+  resetRequestTimeoutOnProgress,
+} from "@/utils/configUtils";
+import { getMCPServerRequestTimeout } from "@/utils/configUtils";
+import { InspectorConfig } from "../configurationTypes";
+
+interface UseConnectionOptions {
+  transportType: "stdio" | "sse" | "streamable-http";
+  command: string;
+  args: string;
+  sseUrl: string;
+  env: Record<string, string>;
+  bearerToken?: string;
+  headerName?: string;
+  config: InspectorConfig;
+  onNotification?: (notification: Notification) => void;
+  onStdErrNotification?: (notification: Notification) => void;
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  onPendingRequest?: (request: any, resolve: any, reject: any) => void;
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  getRoots?: () => any[];
+}
+
+export function useConnection({
+  transportType,
+  command,
+  args,
+  sseUrl,
+  env,
+  bearerToken,
+  headerName,
+  config,
+  onNotification,
+  onStdErrNotification,
+  onPendingRequest,
+  getRoots,
+}: UseConnectionOptions) {
+  const [connectionStatus, setConnectionStatus] =
+    useState<ConnectionStatus>("disconnected");
+  const { toast } = useToast();
+  const [serverCapabilities, setServerCapabilities] =
+    useState<ServerCapabilities | null>(null);
+  const [mcpClient, setMcpClient] = useState<Client | null>(null);
+  const [requestHistory, setRequestHistory] = useState<
+    { request: string; response?: string }[]
+  >([]);
+  const [completionsSupported, setCompletionsSupported] = useState(true);
+
+  const pushHistory = (request: object, response?: object) => {
+    setRequestHistory((prev) => [
+      ...prev,
+      {
+        request: JSON.stringify(request),
+        response: response !== undefined ? JSON.stringify(response) : undefined,
+      },
+    ]);
+  };
+
+  const makeRequest = async <T extends z.ZodType>(
+    request: ClientRequest,
+    schema: T,
+    options?: RequestOptions & { suppressToast?: boolean },
+  ): Promise<z.output<T>> => {
+    if (!mcpClient) {
+      throw new Error("MCP client not connected");
+    }
+    try {
+      const abortController = new AbortController();
+
+      // prepare MCP Client request options
+      const mcpRequestOptions: RequestOptions = {
+        signal: options?.signal ?? abortController.signal,
+        resetTimeoutOnProgress:
+          options?.resetTimeoutOnProgress ??
+          resetRequestTimeoutOnProgress(config),
+        timeout: options?.timeout ?? getMCPServerRequestTimeout(config),
+        maxTotalTimeout:
+          options?.maxTotalTimeout ??
+          getMCPServerRequestMaxTotalTimeout(config),
+      };
+
+      // If progress notifications are enabled, add an onprogress hook to the MCP Client request options
+      // This is required by SDK to reset the timeout on progress notifications
+      if (mcpRequestOptions.resetTimeoutOnProgress) {
+        mcpRequestOptions.onprogress = (params: Progress) => {
+          // Add progress notification to `Server Notification` window in the UI
+          if (onNotification) {
+            onNotification({
+              method: "notification/progress",
+              params,
+            });
+          }
+        };
+      }
+
+      let response;
+      try {
+        response = await mcpClient.request(request, schema, mcpRequestOptions);
+
+        pushHistory(request, response);
+      } catch (error) {
+        const errorMessage =
+          error instanceof Error ? error.message : String(error);
+        pushHistory(request, { error: errorMessage });
+        throw error;
+      }
+
+      return response;
+    } catch (e: unknown) {
+      if (!options?.suppressToast) {
+        const errorString = (e as Error).message ?? String(e);
+        toast({
+          title: "Error",
+          description: errorString,
+          variant: "destructive",
+        });
+      }
+      throw e;
+    }
+  };
+
+  const handleCompletion = async (
+    ref: ResourceReference | PromptReference,
+    argName: string,
+    value: string,
+    signal?: AbortSignal,
+  ): Promise<string[]> => {
+    if (!mcpClient || !completionsSupported) {
+      return [];
+    }
+
+    const request: ClientRequest = {
+      method: "completion/complete",
+      params: {
+        argument: {
+          name: argName,
+          value,
+        },
+        ref,
+      },
+    };
+
+    try {
+      const response = await makeRequest(request, CompleteResultSchema, {
+        signal,
+        suppressToast: true,
+      });
+      return response?.completion.values || [];
+    } catch (e: unknown) {
+      // Disable completions silently if the server doesn't support them.
+      // See https://github.com/modelcontextprotocol/specification/discussions/122
+      if (e instanceof McpError && e.code === ErrorCode.MethodNotFound) {
+        setCompletionsSupported(false);
+        return [];
+      }
+
+      // Unexpected errors - show toast and rethrow
+      toast({
+        title: "Error",
+        description: e instanceof Error ? e.message : String(e),
+        variant: "destructive",
+      });
+      throw e;
+    }
+  };
+
+  const sendNotification = async (notification: ClientNotification) => {
+    if (!mcpClient) {
+      const error = new Error("MCP client not connected");
+      toast({
+        title: "Error",
+        description: error.message,
+        variant: "destructive",
+      });
+      throw error;
+    }
+
+    try {
+      await mcpClient.notification(notification);
+      // Log successful notifications
+      pushHistory(notification);
+    } catch (e: unknown) {
+      if (e instanceof McpError) {
+        // Log MCP protocol errors
+        pushHistory(notification, { error: e.message });
+      }
+      toast({
+        title: "Error",
+        description: e instanceof Error ? e.message : String(e),
+        variant: "destructive",
+      });
+      throw e;
+    }
+  };
+
+  const checkProxyHealth = async () => {
+    try {
+      const proxyHealthUrl = new URL(`${getMCPProxyAddress(config)}/health`);
+      const proxyHealthResponse = await fetch(proxyHealthUrl);
+      const proxyHealth = await proxyHealthResponse.json();
+      if (proxyHealth?.status !== "ok") {
+        throw new Error("MCP Proxy Server is not healthy");
+      }
+    } catch (e) {
+      console.error("Couldn't connect to MCP Proxy Server", e);
+      throw e;
+    }
+  };
+
+  const handleAuthError = async (error: unknown) => {
+    if (error instanceof SseError && error.code === 401) {
+      // Create a new auth provider with the current server URL
+      const serverAuthProvider = new InspectorOAuthClientProvider(sseUrl);
+
+      const result = await auth(serverAuthProvider, { serverUrl: sseUrl });
+      return result === "AUTHORIZED";
+    }
+
+    return false;
+  };
+
+  const connect = async (_e?: unknown, retryCount: number = 0) => {
+    const client = new Client<Request, Notification, Result>(
+      {
+        name: "mcp-inspector",
+        version: packageJson.version,
+      },
+      {
+        capabilities: {
+          sampling: {},
+          roots: {
+            listChanged: true,
+          },
+        },
+      },
+    );
+
+    try {
+      await checkProxyHealth();
+    } catch {
+      setConnectionStatus("error-connecting-to-proxy");
+      return;
+    }
+    let mcpProxyServerUrl;
+    switch (transportType) {
+      case "stdio":
+        mcpProxyServerUrl = new URL(`${getMCPProxyAddress(config)}/stdio`);
+        mcpProxyServerUrl.searchParams.append("command", command);
+        mcpProxyServerUrl.searchParams.append("args", args);
+        mcpProxyServerUrl.searchParams.append("env", JSON.stringify(env));
+        break;
+
+      case "sse":
+        mcpProxyServerUrl = new URL(`${getMCPProxyAddress(config)}/sse`);
+        mcpProxyServerUrl.searchParams.append("url", sseUrl);
+        break;
+
+      case "streamable-http":
+        mcpProxyServerUrl = new URL(`${getMCPProxyAddress(config)}/mcp`);
+        mcpProxyServerUrl.searchParams.append("url", sseUrl);
+        break;
+    }
+    (mcpProxyServerUrl as URL).searchParams.append(
+      "transportType",
+      transportType,
+    );
+
+    try {
+      // Inject auth manually instead of using SSEClientTransport, because we're
+      // proxying through the inspector server first.
+      const headers: HeadersInit = {};
+
+      // Create an auth provider with the current server URL
+      const serverAuthProvider = new InspectorOAuthClientProvider(sseUrl);
+
+      // Use manually provided bearer token if available, otherwise use OAuth tokens
+      const token =
+        bearerToken || (await serverAuthProvider.tokens())?.access_token;
+      if (token) {
+        const authHeaderName = headerName || "Authorization";
+        headers[authHeaderName] = `Bearer ${token}`;
+      }
+
+      // Create appropriate transport
+      const transportOptions = {
+        eventSourceInit: {
+          fetch: (
+            url: string | URL | globalThis.Request,
+            init: RequestInit | undefined,
+          ) => fetch(url, { ...init, headers }),
+        },
+        requestInit: {
+          headers,
+        },
+      };
+      const clientTransport =
+        transportType === "streamable-http"
+          ? new StreamableHTTPClientTransport(mcpProxyServerUrl as URL, {
+              sessionId: undefined,
+            })
+          : new SSEClientTransport(mcpProxyServerUrl as URL, transportOptions);
+
+      if (onNotification) {
+        [
+          CancelledNotificationSchema,
+          LoggingMessageNotificationSchema,
+          ResourceUpdatedNotificationSchema,
+          ResourceListChangedNotificationSchema,
+          ToolListChangedNotificationSchema,
+          PromptListChangedNotificationSchema,
+        ].forEach((notificationSchema) => {
+          client.setNotificationHandler(notificationSchema, onNotification);
+        });
+
+        client.fallbackNotificationHandler = (
+          notification: Notification,
+        ): Promise<void> => {
+          onNotification(notification);
+          return Promise.resolve();
+        };
+      }
+
+      if (onStdErrNotification) {
+        client.setNotificationHandler(
+          StdErrNotificationSchema,
+          onStdErrNotification,
+        );
+      }
+
+      let capabilities;
+      try {
+        await client.connect(clientTransport);
+
+        capabilities = client.getServerCapabilities();
+        const initializeRequest = {
+          method: "initialize",
+        };
+        pushHistory(initializeRequest, {
+          capabilities,
+          serverInfo: client.getServerVersion(),
+          instructions: client.getInstructions(),
+        });
+      } catch (error) {
+        console.error(
+          `Failed to connect to MCP Server via the MCP Inspector Proxy: ${mcpProxyServerUrl}:`,
+          error,
+        );
+        const shouldRetry = await handleAuthError(error);
+        if (shouldRetry) {
+          return connect(undefined, retryCount + 1);
+        }
+
+        if (error instanceof SseError && error.code === 401) {
+          // Don't set error state if we're about to redirect for auth
+          return;
+        }
+        throw error;
+      }
+      setServerCapabilities(capabilities ?? null);
+      setCompletionsSupported(true); // Reset completions support on new connection
+
+      if (onPendingRequest) {
+        client.setRequestHandler(CreateMessageRequestSchema, (request) => {
+          return new Promise((resolve, reject) => {
+            onPendingRequest(request, resolve, reject);
+          });
+        });
+      }
+
+      if (getRoots) {
+        client.setRequestHandler(ListRootsRequestSchema, async () => {
+          return { roots: getRoots() };
+        });
+      }
+
+      setMcpClient(client);
+      setConnectionStatus("connected");
+    } catch (e) {
+      console.error(e);
+      setConnectionStatus("error");
+    }
+  };
+
+  const disconnect = async () => {
+    await mcpClient?.close();
+    const authProvider = new InspectorOAuthClientProvider(sseUrl);
+    authProvider.clear();
+    setMcpClient(null);
+    setConnectionStatus("disconnected");
+    setCompletionsSupported(false);
+    setServerCapabilities(null);
+  };
+
+  return {
+    connectionStatus,
+    serverCapabilities,
+    mcpClient,
+    requestHistory,
+    makeRequest,
+    sendNotification,
+    handleCompletion,
+    completionsSupported,
+    connect,
+    disconnect,
+  };
+}

client/src/lib/hooks/useDraggablePane.ts

@@ -0,0 +1,53 @@
+import { useCallback, useEffect, useRef, useState } from "react";
+
+export function useDraggablePane(initialHeight: number) {
+  const [height, setHeight] = useState(initialHeight);
+  const [isDragging, setIsDragging] = useState(false);
+  const dragStartY = useRef<number>(0);
+  const dragStartHeight = useRef<number>(0);
+
+  const handleDragStart = useCallback(
+    (e: React.MouseEvent) => {
+      setIsDragging(true);
+      dragStartY.current = e.clientY;
+      dragStartHeight.current = height;
+      document.body.style.userSelect = "none";
+    },
+    [height],
+  );
+
+  const handleDragMove = useCallback(
+    (e: MouseEvent) => {
+      if (!isDragging) return;
+      const deltaY = dragStartY.current - e.clientY;
+      const newHeight = Math.max(
+        100,
+        Math.min(800, dragStartHeight.current + deltaY),
+      );
+      setHeight(newHeight);
+    },
+    [isDragging],
+  );
+
+  const handleDragEnd = useCallback(() => {
+    setIsDragging(false);
+    document.body.style.userSelect = "";
+  }, []);
+
+  useEffect(() => {
+    if (isDragging) {
+      window.addEventListener("mousemove", handleDragMove);
+      window.addEventListener("mouseup", handleDragEnd);
+      return () => {
+        window.removeEventListener("mousemove", handleDragMove);
+        window.removeEventListener("mouseup", handleDragEnd);
+      };
+    }
+  }, [isDragging, handleDragMove, handleDragEnd]);
+
+  return {
+    height,
+    isDragging,
+    handleDragStart,
+  };
+}

client/src/lib/notificationTypes.ts

@@ -0,0 +1,22 @@
+import {
+  NotificationSchema as BaseNotificationSchema,
+  ClientNotificationSchema,
+  ServerNotificationSchema,
+} from "@modelcontextprotocol/sdk/types.js";
+import { z } from "zod";
+
+export const StdErrNotificationSchema = BaseNotificationSchema.extend({
+  method: z.literal("notifications/stderr"),
+  params: z.object({
+    content: z.string(),
+  }),
+});
+
+export const NotificationSchema = ClientNotificationSchema.or(
+  StdErrNotificationSchema,
+)
+  .or(ServerNotificationSchema)
+  .or(BaseNotificationSchema);
+
+export type StdErrNotification = z.infer<typeof StdErrNotificationSchema>;
+export type Notification = z.infer<typeof NotificationSchema>;

client/src/lib/useTheme.ts

@@ -0,0 +1,52 @@
+import { useCallback, useEffect, useMemo, useState } from "react";
+
+type Theme = "light" | "dark" | "system";
+
+const useTheme = (): [Theme, (mode: Theme) => void] => {
+  const [theme, setTheme] = useState<Theme>(() => {
+    const savedTheme = localStorage.getItem("theme") as Theme;
+    return savedTheme || "system";
+  });
+
+  useEffect(() => {
+    const darkModeMediaQuery = window.matchMedia(
+      "(prefers-color-scheme: dark)",
+    );
+    const handleDarkModeChange = (e: MediaQueryListEvent) => {
+      if (theme === "system") {
+        updateDocumentTheme(e.matches ? "dark" : "light");
+      }
+    };
+
+    const updateDocumentTheme = (newTheme: "light" | "dark") => {
+      document.documentElement.classList.toggle("dark", newTheme === "dark");
+    };
+
+    // Set initial theme based on current mode
+    if (theme === "system") {
+      updateDocumentTheme(darkModeMediaQuery.matches ? "dark" : "light");
+    } else {
+      updateDocumentTheme(theme);
+    }
+
+    darkModeMediaQuery.addEventListener("change", handleDarkModeChange);
+
+    return () => {
+      darkModeMediaQuery.removeEventListener("change", handleDarkModeChange);
+    };
+  }, [theme]);
+
+  const setThemeWithSideEffect = useCallback((newTheme: Theme) => {
+    setTheme(newTheme);
+    localStorage.setItem("theme", newTheme);
+    if (newTheme !== "system") {
+      document.documentElement.classList.toggle("dark", newTheme === "dark");
+    }
+  }, []);
+  return useMemo(
+    () => [theme, setThemeWithSideEffect],
+    [theme, setThemeWithSideEffect],
+  );
+};
+
+export default useTheme;

client/src/lib/utils.ts

@@ -1,6 +1,6 @@
-import { clsx, type ClassValue } from "clsx"
-import { twMerge } from "tailwind-merge"
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
 
 export function cn(...inputs: ClassValue[]) {
-  return twMerge(clsx(inputs))
+  return twMerge(clsx(inputs));
 }

client/src/main.tsx

@@ -1,10 +1,15 @@
 import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
+import { Toaster } from "@/components/ui/toaster.tsx";
 import App from "./App.tsx";
 import "./index.css";
+import { TooltipProvider } from "./components/ui/tooltip.tsx";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
-    <App />
+    <TooltipProvider>
+      <App />
+    </TooltipProvider>
+    <Toaster />
   </StrictMode>,
 );

client/src/utils/__tests__/escapeUnicode.test.ts

@@ -0,0 +1,27 @@
+import { escapeUnicode } from "../escapeUnicode";
+
+describe("escapeUnicode", () => {
+  it("should escape Unicode characters in a string", () => {
+    const input = { text: "你好世界" };
+    const expected = '{\n  "text": "\\\\u4f60\\\\u597d\\\\u4e16\\\\u754c"\n}';
+    expect(escapeUnicode(input)).toBe(expected);
+  });
+
+  it("should handle empty strings", () => {
+    const input = { text: "" };
+    const expected = '{\n  "text": ""\n}';
+    expect(escapeUnicode(input)).toBe(expected);
+  });
+
+  it("should handle null and undefined values", () => {
+    const input = { text: null, value: undefined };
+    const expected = '{\n  "text": null\n}';
+    expect(escapeUnicode(input)).toBe(expected);
+  });
+
+  it("should handle numbers and booleans", () => {
+    const input = { number: 123, boolean: true };
+    const expected = '{\n  "number": 123,\n  "boolean": true\n}';
+    expect(escapeUnicode(input)).toBe(expected);
+  });
+});

client/src/utils/__tests__/jsonUtils.test.ts

@@ -0,0 +1,319 @@
+import {
+  getDataType,
+  tryParseJson,
+  updateValueAtPath,
+  getValueAtPath,
+} from "../jsonUtils";
+import type { JsonValue } from "../jsonUtils";
+
+describe("getDataType", () => {
+  test("should return 'string' for string values", () => {
+    expect(getDataType("hello")).toBe("string");
+    expect(getDataType("")).toBe("string");
+  });
+
+  test("should return 'number' for number values", () => {
+    expect(getDataType(123)).toBe("number");
+    expect(getDataType(0)).toBe("number");
+    expect(getDataType(-10)).toBe("number");
+    expect(getDataType(1.5)).toBe("number");
+    expect(getDataType(NaN)).toBe("number");
+    expect(getDataType(Infinity)).toBe("number");
+  });
+
+  test("should return 'boolean' for boolean values", () => {
+    expect(getDataType(true)).toBe("boolean");
+    expect(getDataType(false)).toBe("boolean");
+  });
+
+  test("should return 'undefined' for undefined value", () => {
+    expect(getDataType(undefined)).toBe("undefined");
+  });
+
+  test("should return 'object' for object values", () => {
+    expect(getDataType({})).toBe("object");
+    expect(getDataType({ key: "value" })).toBe("object");
+  });
+
+  test("should return 'array' for array values", () => {
+    expect(getDataType([])).toBe("array");
+    expect(getDataType([1, 2, 3])).toBe("array");
+    expect(getDataType(["a", "b", "c"])).toBe("array");
+    expect(getDataType([{}, { nested: true }])).toBe("array");
+  });
+
+  test("should return 'null' for null value", () => {
+    expect(getDataType(null)).toBe("null");
+  });
+});
+
+describe("tryParseJson", () => {
+  test("should correctly parse valid JSON object", () => {
+    const jsonString = '{"name":"test","value":123}';
+    const result = tryParseJson(jsonString);
+
+    expect(result.success).toBe(true);
+    expect(result.data).toEqual({ name: "test", value: 123 });
+  });
+
+  test("should correctly parse valid JSON array", () => {
+    const jsonString = '[1,2,3,"test"]';
+    const result = tryParseJson(jsonString);
+
+    expect(result.success).toBe(true);
+    expect(result.data).toEqual([1, 2, 3, "test"]);
+  });
+
+  test("should correctly parse JSON with whitespace", () => {
+    const jsonString = '  {  "name"  :  "test"  }  ';
+    const result = tryParseJson(jsonString);
+
+    expect(result.success).toBe(true);
+    expect(result.data).toEqual({ name: "test" });
+  });
+
+  test("should correctly parse nested JSON structures", () => {
+    const jsonString =
+      '{"user":{"name":"test","details":{"age":30}},"items":[1,2,3]}';
+    const result = tryParseJson(jsonString);
+
+    expect(result.success).toBe(true);
+    expect(result.data).toEqual({
+      user: {
+        name: "test",
+        details: {
+          age: 30,
+        },
+      },
+      items: [1, 2, 3],
+    });
+  });
+
+  test("should correctly parse empty objects and arrays", () => {
+    expect(tryParseJson("{}").success).toBe(true);
+    expect(tryParseJson("{}").data).toEqual({});
+
+    expect(tryParseJson("[]").success).toBe(true);
+    expect(tryParseJson("[]").data).toEqual([]);
+  });
+
+  test("should return failure for non-JSON strings", () => {
+    const nonJsonString = "this is not json";
+    const result = tryParseJson(nonJsonString);
+
+    expect(result.success).toBe(false);
+    expect(result.data).toBe(nonJsonString);
+  });
+
+  test("should return failure for malformed JSON", () => {
+    const malformedJson = '{"name":"test",}';
+    const result = tryParseJson(malformedJson);
+
+    expect(result.success).toBe(false);
+    expect(result.data).toBe(malformedJson);
+  });
+
+  test("should return failure for strings with correct delimiters but invalid JSON", () => {
+    const invalidJson = "{name:test}";
+    const result = tryParseJson(invalidJson);
+
+    expect(result.success).toBe(false);
+    expect(result.data).toBe(invalidJson);
+  });
+
+  test("should handle edge cases", () => {
+    expect(tryParseJson("").success).toBe(false);
+    expect(tryParseJson("").data).toBe("");
+
+    expect(tryParseJson("   ").success).toBe(false);
+    expect(tryParseJson("   ").data).toBe("   ");
+
+    expect(tryParseJson("null").success).toBe(false);
+    expect(tryParseJson("null").data).toBe("null");
+
+    expect(tryParseJson('"string"').success).toBe(false);
+    expect(tryParseJson('"string"').data).toBe('"string"');
+
+    expect(tryParseJson("123").success).toBe(false);
+    expect(tryParseJson("123").data).toBe("123");
+
+    expect(tryParseJson("true").success).toBe(false);
+    expect(tryParseJson("true").data).toBe("true");
+  });
+});
+
+describe("updateValueAtPath", () => {
+  // Basic functionality tests
+  test("returns the new value when path is empty", () => {
+    expect(updateValueAtPath({ foo: "bar" }, [], "newValue")).toBe("newValue");
+  });
+
+  test("initializes an empty object when input is null/undefined and path starts with a string", () => {
+    expect(updateValueAtPath(null, ["foo"], "bar")).toEqual({
+      foo: "bar",
+    });
+    expect(updateValueAtPath(undefined, ["foo"], "bar")).toEqual({
+      foo: "bar",
+    });
+  });
+
+  test("initializes an empty array when input is null/undefined and path starts with a number", () => {
+    expect(updateValueAtPath(null, ["0"], "bar")).toEqual(["bar"]);
+    expect(updateValueAtPath(undefined, ["0"], "bar")).toEqual(["bar"]);
+  });
+
+  // Object update tests
+  test("updates a simple object property", () => {
+    const obj = { name: "John", age: 30 };
+    expect(updateValueAtPath(obj, ["age"], 31)).toEqual({
+      name: "John",
+      age: 31,
+    });
+  });
+
+  test("updates a nested object property", () => {
+    const obj = { user: { name: "John", address: { city: "New York" } } };
+    expect(
+      updateValueAtPath(obj, ["user", "address", "city"], "Boston"),
+    ).toEqual({ user: { name: "John", address: { city: "Boston" } } });
+  });
+
+  test("creates missing object properties", () => {
+    const obj = { user: { name: "John" } };
+    expect(
+      updateValueAtPath(obj, ["user", "address", "city"], "Boston"),
+    ).toEqual({ user: { name: "John", address: { city: "Boston" } } });
+  });
+
+  // Array update tests
+  test("updates an array item", () => {
+    const arr = [1, 2, 3, 4];
+    expect(updateValueAtPath(arr, ["2"], 5)).toEqual([1, 2, 5, 4]);
+  });
+
+  test("extends an array when index is out of bounds", () => {
+    const arr = [1, 2, 3];
+    const result = updateValueAtPath(arr, ["5"], "new") as JsonValue[];
+
+    // Check overall array structure
+    expect(result).toEqual([1, 2, 3, null, null, "new"]);
+
+    // Explicitly verify that indices 3 and 4 contain null, not undefined
+    expect(result[3]).toBe(null);
+    expect(result[4]).toBe(null);
+
+    // Verify these aren't "holes" in the array (important distinction)
+    expect(3 in result).toBe(true);
+    expect(4 in result).toBe(true);
+
+    // Verify the array has the correct length
+    expect(result.length).toBe(6);
+
+    // Verify the array doesn't have holes by checking every index exists
+    expect(result.every((_, index: number) => index in result)).toBe(true);
+  });
+
+  test("updates a nested array item", () => {
+    const obj = { users: [{ name: "John" }, { name: "Jane" }] };
+    expect(updateValueAtPath(obj, ["users", "1", "name"], "Janet")).toEqual({
+      users: [{ name: "John" }, { name: "Janet" }],
+    });
+  });
+
+  // Error handling tests
+  test("returns original value when trying to update a primitive with a path", () => {
+    const spy = jest.spyOn(console, "error").mockImplementation();
+    const result = updateValueAtPath("string", ["foo"], "bar");
+    expect(result).toBe("string");
+    expect(spy).toHaveBeenCalled();
+    spy.mockRestore();
+  });
+
+  test("returns original array when index is invalid", () => {
+    const spy = jest.spyOn(console, "error").mockImplementation();
+    const arr = [1, 2, 3];
+    expect(updateValueAtPath(arr, ["invalid"], 4)).toEqual(arr);
+    expect(spy).toHaveBeenCalled();
+    spy.mockRestore();
+  });
+
+  test("returns original array when index is negative", () => {
+    const spy = jest.spyOn(console, "error").mockImplementation();
+    const arr = [1, 2, 3];
+    expect(updateValueAtPath(arr, ["-1"], 4)).toEqual(arr);
+    expect(spy).toHaveBeenCalled();
+    spy.mockRestore();
+  });
+
+  test("handles sparse arrays correctly by filling holes with null", () => {
+    // Create a sparse array by deleting an element
+    const sparseArr = [1, 2, 3];
+    delete sparseArr[1]; // Now sparseArr is [1, <1 empty item>, 3]
+
+    // Update a value beyond the array length
+    const result = updateValueAtPath(sparseArr, ["5"], "new") as JsonValue[];
+
+    // Check overall array structure
+    expect(result).toEqual([1, null, 3, null, null, "new"]);
+
+    // Explicitly verify that index 1 (the hole) contains null, not undefined
+    expect(result[1]).toBe(null);
+
+    // Verify this isn't a hole in the array
+    expect(1 in result).toBe(true);
+
+    // Verify all indices contain null (not undefined)
+    expect(result[1]).not.toBe(undefined);
+    expect(result[3]).toBe(null);
+    expect(result[4]).toBe(null);
+  });
+});
+
+describe("getValueAtPath", () => {
+  test("returns the original value when path is empty", () => {
+    const obj = { foo: "bar" };
+    expect(getValueAtPath(obj, [])).toBe(obj);
+  });
+
+  test("returns the value at a simple path", () => {
+    const obj = { name: "John", age: 30 };
+    expect(getValueAtPath(obj, ["name"])).toBe("John");
+  });
+
+  test("returns the value at a nested path", () => {
+    const obj = { user: { name: "John", address: { city: "New York" } } };
+    expect(getValueAtPath(obj, ["user", "address", "city"])).toBe("New York");
+  });
+
+  test("returns default value when path does not exist", () => {
+    const obj = { user: { name: "John" } };
+    expect(getValueAtPath(obj, ["user", "address", "city"], "Unknown")).toBe(
+      "Unknown",
+    );
+  });
+
+  test("returns default value when input is null/undefined", () => {
+    expect(getValueAtPath(null, ["foo"], "default")).toBe("default");
+    expect(getValueAtPath(undefined, ["foo"], "default")).toBe("default");
+  });
+
+  test("handles array indices correctly", () => {
+    const arr = ["a", "b", "c"];
+    expect(getValueAtPath(arr, ["1"])).toBe("b");
+  });
+
+  test("returns default value for out of bounds array indices", () => {
+    const arr = ["a", "b", "c"];
+    expect(getValueAtPath(arr, ["5"], "default")).toBe("default");
+  });
+
+  test("returns default value for invalid array indices", () => {
+    const arr = ["a", "b", "c"];
+    expect(getValueAtPath(arr, ["invalid"], "default")).toBe("default");
+  });
+
+  test("navigates through mixed object and array paths", () => {
+    const obj = { users: [{ name: "John" }, { name: "Jane" }] };
+    expect(getValueAtPath(obj, ["users", "1", "name"])).toBe("Jane");
+  });
+});

client/src/utils/__tests__/oauthUtils.ts

@@ -0,0 +1,78 @@
+import {
+  generateOAuthErrorDescription,
+  parseOAuthCallbackParams,
+} from "@/utils/oauthUtils.ts";
+
+describe("parseOAuthCallbackParams", () => {
+  it("Returns successful: true and code when present", () => {
+    expect(parseOAuthCallbackParams("?code=fake-code")).toEqual({
+      successful: true,
+      code: "fake-code",
+    });
+  });
+  it("Returns successful: false and error when error is present", () => {
+    expect(parseOAuthCallbackParams("?error=access_denied")).toEqual({
+      successful: false,
+      error: "access_denied",
+      error_description: null,
+      error_uri: null,
+    });
+  });
+  it("Returns optional error metadata fields when present", () => {
+    const search =
+      "?error=access_denied&" +
+      "error_description=User%20Denied%20Request&" +
+      "error_uri=https%3A%2F%2Fexample.com%2Ferror-docs";
+    expect(parseOAuthCallbackParams(search)).toEqual({
+      successful: false,
+      error: "access_denied",
+      error_description: "User Denied Request",
+      error_uri: "https://example.com/error-docs",
+    });
+  });
+  it("Returns error when nothing present", () => {
+    expect(parseOAuthCallbackParams("?")).toEqual({
+      successful: false,
+      error: "invalid_request",
+      error_description: "Missing code or error in response",
+      error_uri: null,
+    });
+  });
+});
+
+describe("generateOAuthErrorDescription", () => {
+  it("When only error is present", () => {
+    expect(
+      generateOAuthErrorDescription({
+        successful: false,
+        error: "invalid_request",
+        error_description: null,
+        error_uri: null,
+      }),
+    ).toBe("Error: invalid_request.");
+  });
+  it("When error description is present", () => {
+    expect(
+      generateOAuthErrorDescription({
+        successful: false,
+        error: "invalid_request",
+        error_description: "The request could not be completed as dialed",
+        error_uri: null,
+      }),
+    ).toEqual(
+      "Error: invalid_request.\nDetails: The request could not be completed as dialed.",
+    );
+  });
+  it("When all fields present", () => {
+    expect(
+      generateOAuthErrorDescription({
+        successful: false,
+        error: "invalid_request",
+        error_description: "The request could not be completed as dialed",
+        error_uri: "https://example.com/error-docs",
+      }),
+    ).toEqual(
+      "Error: invalid_request.\nDetails: The request could not be completed as dialed.\nMore info: https://example.com/error-docs.",
+    );
+  });
+});

client/src/utils/__tests__/schemaUtils.test.ts

@@ -0,0 +1,139 @@
+import { generateDefaultValue, formatFieldLabel } from "../schemaUtils";
+import type { JsonSchemaType } from "../jsonUtils";
+
+describe("generateDefaultValue", () => {
+  test("generates default string", () => {
+    expect(generateDefaultValue({ type: "string", required: true })).toBe("");
+  });
+
+  test("generates default number", () => {
+    expect(generateDefaultValue({ type: "number", required: true })).toBe(0);
+  });
+
+  test("generates default integer", () => {
+    expect(generateDefaultValue({ type: "integer", required: true })).toBe(0);
+  });
+
+  test("generates default boolean", () => {
+    expect(generateDefaultValue({ type: "boolean", required: true })).toBe(
+      false,
+    );
+  });
+
+  test("generates default array", () => {
+    expect(generateDefaultValue({ type: "array", required: true })).toEqual([]);
+  });
+
+  test("generates default empty object", () => {
+    expect(generateDefaultValue({ type: "object", required: true })).toEqual(
+      {},
+    );
+  });
+
+  test("generates default null for unknown types", () => {
+    // @ts-expect-error Testing with invalid type
+    expect(generateDefaultValue({ type: "unknown", required: true })).toBe(
+      null,
+    );
+  });
+
+  test("generates empty array for non-required array", () => {
+    expect(generateDefaultValue({ type: "array", required: false })).toEqual(
+      [],
+    );
+  });
+
+  test("generates empty object for non-required object", () => {
+    expect(generateDefaultValue({ type: "object", required: false })).toEqual(
+      {},
+    );
+  });
+
+  test("generates null for non-required primitive types", () => {
+    expect(generateDefaultValue({ type: "string", required: false })).toBe(
+      undefined,
+    );
+    expect(generateDefaultValue({ type: "number", required: false })).toBe(
+      undefined,
+    );
+    expect(generateDefaultValue({ type: "boolean", required: false })).toBe(
+      undefined,
+    );
+  });
+
+  test("generates object with properties", () => {
+    const schema: JsonSchemaType = {
+      type: "object",
+      required: true,
+      properties: {
+        name: { type: "string", required: true },
+        age: { type: "number", required: true },
+        isActive: { type: "boolean", required: true },
+      },
+    };
+    expect(generateDefaultValue(schema)).toEqual({
+      name: "",
+      age: 0,
+      isActive: false,
+    });
+  });
+
+  test("handles nested objects", () => {
+    const schema: JsonSchemaType = {
+      type: "object",
+      required: true,
+      properties: {
+        user: {
+          type: "object",
+          required: true,
+          properties: {
+            name: { type: "string", required: true },
+            address: {
+              type: "object",
+              required: true,
+              properties: {
+                city: { type: "string", required: true },
+              },
+            },
+          },
+        },
+      },
+    };
+    expect(generateDefaultValue(schema)).toEqual({
+      user: {
+        name: "",
+        address: {
+          city: "",
+        },
+      },
+    });
+  });
+
+  test("uses schema default value when provided", () => {
+    expect(generateDefaultValue({ type: "string", default: "test" })).toBe(
+      "test",
+    );
+  });
+});
+
+describe("formatFieldLabel", () => {
+  test("formats camelCase", () => {
+    expect(formatFieldLabel("firstName")).toBe("First Name");
+  });
+
+  test("formats snake_case", () => {
+    expect(formatFieldLabel("first_name")).toBe("First name");
+  });
+
+  test("formats single word", () => {
+    expect(formatFieldLabel("name")).toBe("Name");
+  });
+
+  test("formats mixed case with underscores", () => {
+    expect(formatFieldLabel("user_firstName")).toBe("User first Name");
+  });
+
+  test("handles empty string", () => {
+    expect(formatFieldLabel("")).toBe("");
+  });
+});

client/src/utils/configUtils.ts

@@ -0,0 +1,26 @@
+import { InspectorConfig } from "@/lib/configurationTypes";
+import { DEFAULT_MCP_PROXY_LISTEN_PORT } from "@/lib/constants";
+
+export const getMCPProxyAddress = (config: InspectorConfig): string => {
+  const proxyFullAddress = config.MCP_PROXY_FULL_ADDRESS.value as string;
+  if (proxyFullAddress) {
+    return proxyFullAddress;
+  }
+  return `${window.location.protocol}//${window.location.hostname}:${DEFAULT_MCP_PROXY_LISTEN_PORT}`;
+};
+
+export const getMCPServerRequestTimeout = (config: InspectorConfig): number => {
+  return config.MCP_SERVER_REQUEST_TIMEOUT.value as number;
+};
+
+export const resetRequestTimeoutOnProgress = (
+  config: InspectorConfig,
+): boolean => {
+  return config.MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS.value as boolean;
+};
+
+export const getMCPServerRequestMaxTotalTimeout = (
+  config: InspectorConfig,
+): number => {
+  return config.MCP_REQUEST_MAX_TOTAL_TIMEOUT.value as number;
+};

client/src/utils/escapeUnicode.ts

@@ -0,0 +1,16 @@
+// Utility function to escape Unicode characters
+export function escapeUnicode(obj: unknown): string {
+  return JSON.stringify(
+    obj,
+    (_key: string, value) => {
+      if (typeof value === "string") {
+        // Replace non-ASCII characters with their Unicode escape sequences
+        return value.replace(/[^\0-\x7F]/g, (char) => {
+          return "\\u" + ("0000" + char.charCodeAt(0).toString(16)).slice(-4);
+        });
+      }
+      return value;
+    },
+    2,
+  );
+}

client/src/utils/jsonUtils.ts

@@ -0,0 +1,208 @@
+export type JsonValue =
+  | string
+  | number
+  | boolean
+  | null
+  | undefined
+  | JsonValue[]
+  | { [key: string]: JsonValue };
+
+export type JsonSchemaType = {
+  type:
+    | "string"
+    | "number"
+    | "integer"
+    | "boolean"
+    | "array"
+    | "object"
+    | "null";
+  description?: string;
+  required?: boolean;
+  default?: JsonValue;
+  properties?: Record<string, JsonSchemaType>;
+  items?: JsonSchemaType;
+};
+
+export type JsonObject = { [key: string]: JsonValue };
+
+export type DataType =
+  | "string"
+  | "number"
+  | "bigint"
+  | "boolean"
+  | "symbol"
+  | "undefined"
+  | "object"
+  | "function"
+  | "array"
+  | "null";
+
+export function getDataType(value: JsonValue): DataType {
+  if (Array.isArray(value)) return "array";
+  if (value === null) return "null";
+  return typeof value;
+}
+
+export function tryParseJson(str: string): {
+  success: boolean;
+  data: JsonValue;
+} {
+  const trimmed = str.trim();
+  if (
+    !(trimmed.startsWith("{") && trimmed.endsWith("}")) &&
+    !(trimmed.startsWith("[") && trimmed.endsWith("]"))
+  ) {
+    return { success: false, data: str };
+  }
+  try {
+    return { success: true, data: JSON.parse(str) };
+  } catch {
+    return { success: false, data: str };
+  }
+}
+
+/**
+ * Updates a value at a specific path in a nested JSON structure
+ * @param obj The original JSON value
+ * @param path Array of keys/indices representing the path to the value
+ * @param value The new value to set
+ * @returns A new JSON value with the updated path
+ */
+export function updateValueAtPath(
+  obj: JsonValue,
+  path: string[],
+  value: JsonValue,
+): JsonValue {
+  if (path.length === 0) return value;
+
+  if (obj === null || obj === undefined) {
+    obj = !isNaN(Number(path[0])) ? [] : {};
+  }
+
+  if (Array.isArray(obj)) {
+    return updateArray(obj, path, value);
+  } else if (typeof obj === "object" && obj !== null) {
+    return updateObject(obj as JsonObject, path, value);
+  } else {
+    console.error(
+      `Cannot update path ${path.join(".")} in non-object/array value:`,
+      obj,
+    );
+    return obj;
+  }
+}
+
+/**
+ * Updates an array at a specific path
+ */
+function updateArray(
+  array: JsonValue[],
+  path: string[],
+  value: JsonValue,
+): JsonValue[] {
+  const [index, ...restPath] = path;
+  const arrayIndex = Number(index);
+
+  if (isNaN(arrayIndex)) {
+    console.error(`Invalid array index: ${index}`);
+    return array;
+  }
+
+  if (arrayIndex < 0) {
+    console.error(`Array index out of bounds: ${arrayIndex} < 0`);
+    return array;
+  }
+
+  let newArray: JsonValue[] = [];
+  for (let i = 0; i < array.length; i++) {
+    newArray[i] = i in array ? array[i] : null;
+  }
+
+  if (arrayIndex >= newArray.length) {
+    const extendedArray: JsonValue[] = new Array(arrayIndex).fill(null);
+    // Copy over the existing elements (now guaranteed to be dense)
+    for (let i = 0; i < newArray.length; i++) {
+      extendedArray[i] = newArray[i];
+    }
+    newArray = extendedArray;
+  }
+
+  if (restPath.length === 0) {
+    newArray[arrayIndex] = value;
+  } else {
+    newArray[arrayIndex] = updateValueAtPath(
+      newArray[arrayIndex],
+      restPath,
+      value,
+    );
+  }
+  return newArray;
+}
+
+/**
+ * Updates an object at a specific path
+ */
+function updateObject(
+  obj: JsonObject,
+  path: string[],
+  value: JsonValue,
+): JsonObject {
+  const [key, ...restPath] = path;
+
+  // Validate object key
+  if (typeof key !== "string") {
+    console.error(`Invalid object key: ${key}`);
+    return obj;
+  }
+
+  const newObj = { ...obj };
+
+  if (restPath.length === 0) {
+    newObj[key] = value;
+  } else {
+    // Ensure key exists
+    if (!(key in newObj)) {
+      newObj[key] = {};
+    }
+    newObj[key] = updateValueAtPath(newObj[key], restPath, value);
+  }
+  return newObj;
+}
+
+/**
+ * Gets a value at a specific path in a nested JSON structure
+ * @param obj The JSON value to traverse
+ * @param path Array of keys/indices representing the path to the value
+ * @param defaultValue Value to return if path doesn't exist
+ * @returns The value at the path, or defaultValue if not found
+ */
+export function getValueAtPath(
+  obj: JsonValue,
+  path: string[],
+  defaultValue: JsonValue = null,
+): JsonValue {
+  if (path.length === 0) return obj;
+
+  const [first, ...rest] = path;
+
+  if (obj === null || obj === undefined) {
+    return defaultValue;
+  }
+
+  if (Array.isArray(obj)) {
+    const index = Number(first);
+    if (isNaN(index) || index < 0 || index >= obj.length) {
+      return defaultValue;
+    }
+    return getValueAtPath(obj[index], rest, defaultValue);
+  }
+
+  if (typeof obj === "object" && obj !== null) {
+    if (!(first in obj)) {
+      return defaultValue;
+    }
+    return getValueAtPath((obj as JsonObject)[first], rest, defaultValue);
+  }
+
+  return defaultValue;
+}

client/src/utils/oauthUtils.ts

@@ -0,0 +1,65 @@
+// The parsed query parameters returned by the Authorization Server
+// representing either a valid authorization_code or an error
+// ref: https://datatracker.ietf.org/doc/html/draft-ietf-oauth-v2-1-12#section-4.1.2
+type CallbackParams =
+  | {
+      successful: true;
+      // The authorization code is generated by the authorization server.
+      code: string;
+    }
+  | {
+      successful: false;
+      // The OAuth 2.1 Error Code.
+      // Usually one of:
+      //    ```
+      //    invalid_request, unauthorized_client, access_denied, unsupported_response_type,
+      //    invalid_scope, server_error, temporarily_unavailable
+      //    ```
+      error: string;
+      // Human-readable ASCII text providing additional information, used to assist the
+      // developer in understanding the error that occurred.
+      error_description: string | null;
+      // A URI identifying a human-readable web page with information about the error,
+      // used to provide the client developer with additional information about the error.
+      error_uri: string | null;
+    };
+
+export const parseOAuthCallbackParams = (location: string): CallbackParams => {
+  const params = new URLSearchParams(location);
+
+  const code = params.get("code");
+  if (code) {
+    return { successful: true, code };
+  }
+
+  const error = params.get("error");
+  const error_description = params.get("error_description");
+  const error_uri = params.get("error_uri");
+
+  if (error) {
+    return { successful: false, error, error_description, error_uri };
+  }
+
+  return {
+    successful: false,
+    error: "invalid_request",
+    error_description: "Missing code or error in response",
+    error_uri: null,
+  };
+};
+
+export const generateOAuthErrorDescription = (
+  params: Extract<CallbackParams, { successful: false }>,
+): string => {
+  const error = params.error;
+  const errorDescription = params.error_description;
+  const errorUri = params.error_uri;
+
+  return [
+    `Error: ${error}.`,
+    errorDescription ? `Details: ${errorDescription}.` : "",
+    errorUri ? `More info: ${errorUri}.` : "",
+  ]
+    .filter(Boolean)
+    .join("\n");
+};

client/src/utils/schemaUtils.ts

@@ -0,0 +1,56 @@
+import type { JsonValue, JsonSchemaType, JsonObject } from "./jsonUtils";
+
+/**
+ * Generates a default value based on a JSON schema type
+ * @param schema The JSON schema definition
+ * @returns A default value matching the schema type, or null for non-required fields
+ */
+export function generateDefaultValue(schema: JsonSchemaType): JsonValue {
+  if ("default" in schema) {
+    return schema.default;
+  }
+
+  if (!schema.required) {
+    if (schema.type === "array") return [];
+    if (schema.type === "object") return {};
+    return undefined;
+  }
+
+  switch (schema.type) {
+    case "string":
+      return "";
+    case "number":
+    case "integer":
+      return 0;
+    case "boolean":
+      return false;
+    case "array":
+      return [];
+    case "object": {
+      if (!schema.properties) return {};
+
+      const obj: JsonObject = {};
+      Object.entries(schema.properties)
+        .filter(([, prop]) => prop.required)
+        .forEach(([key, prop]) => {
+          const value = generateDefaultValue(prop);
+          obj[key] = value;
+        });
+      return obj;
+    }
+    default:
+      return null;
+  }
+}
+
+/**
+ * Formats a field key into a human-readable label
+ * @param key The field key to format
+ * @returns A formatted label string
+ */
+export function formatFieldLabel(key: string): string {
+  return key
+    .replace(/([A-Z])/g, " $1") // Insert space before capital letters
+    .replace(/_/g, " ") // Replace underscores with spaces
+    .replace(/^\w/, (c) => c.toUpperCase()); // Capitalize first letter
+}

client/tailwind.config.js

@@ -1,4 +1,5 @@
 /** @type {import('tailwindcss').Config} */
+import animate from "tailwindcss-animate";
 export default {
   darkMode: ["class"],
   content: ["./index.html", "./src/**/*.{js,ts,jsx,tsx}"],
@@ -53,5 +54,5 @@ export default {
       },
     },
   },
-  plugins: [require("tailwindcss-animate")],
+  plugins: [animate],
 };

client/tsconfig.app.json

@@ -2,9 +2,7 @@
   "compilerOptions": {
     "baseUrl": ".",
     "paths": {
-      "@/*": [
-        "./src/*"
-      ]
+      "@/*": ["./src/*"]
     },
 
     "target": "ES2020",
@@ -25,7 +23,9 @@
     "strict": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
-    "noFallthroughCasesInSwitch": true
+    "noFallthroughCasesInSwitch": true,
+    "resolveJsonModule": true,
+    "types": ["jest", "@testing-library/jest-dom", "node"]
   },
   "include": ["src"]
 }

client/tsconfig.jest.json

@@ -0,0 +1,10 @@
+{
+  "extends": "./tsconfig.app.json",
+  "compilerOptions": {
+    "jsx": "react-jsx",
+    "esModuleInterop": true,
+    "module": "ESNext",
+    "moduleResolution": "node"
+  },
+  "include": ["src"]
+}

client/vite.config.ts

@@ -1,13 +1,24 @@
+import react from "@vitejs/plugin-react";
 import path from "path";
 import { defineConfig } from "vite";
-import react from "@vitejs/plugin-react";
 
 // https://vitejs.dev/config/
 export default defineConfig({
   plugins: [react()],
+  server: {
+    host: true,
+  },
   resolve: {
     alias: {
       "@": path.resolve(__dirname, "./src"),
     },
   },
+  build: {
+    minify: false,
+    rollupOptions: {
+      output: {
+        manualChunks: undefined,
+      },
+    },
+  },
 });

package.json

@@ -1,24 +1,59 @@
 {
-  "name": "mcp-inspector",
-  "private": true,
-  "version": "0.0.1",
+  "name": "@modelcontextprotocol/inspector",
+  "version": "0.10.2",
+  "description": "Model Context Protocol inspector",
+  "license": "MIT",
+  "author": "Anthropic, PBC (https://anthropic.com)",
+  "homepage": "https://modelcontextprotocol.io",
+  "bugs": "https://github.com/modelcontextprotocol/inspector/issues",
   "type": "module",
+  "bin": {
+    "mcp-inspector": "cli/build/cli.js"
+  },
+  "files": [
+    "client/bin",
+    "client/dist",
+    "server/build",
+    "cli/build"
+  ],
   "workspaces": [
     "client",
-    "server"
+    "server",
+    "cli"
   ],
   "scripts": {
-    "dev": "concurrently \"cd client && npm run dev\" \"cd server && npm run dev\"",
+    "build": "npm run build-server && npm run build-client && npm run build-cli",
     "build-server": "cd server && npm run build",
     "build-client": "cd client && npm run build",
-    "build": "npm run build-server && npm run build-client",
+    "build-cli": "cd cli && npm run build",
+    "dev": "concurrently \"cd client && npm run dev\" \"cd server && npm run dev\"",
+    "dev:windows": "concurrently \"cd client && npm run dev\" \"cd server && npm run dev:windows\"",
+    "start": "node client/bin/start.js",
     "start-server": "cd server && npm run start",
     "start-client": "cd client && npm run preview",
-    "start": "concurrently \"npm run start-server\" \"npm run start-client\"",
-    "prettier-fix": "prettier --write ."
+    "test": "npm run prettier-check && cd client && npm test",
+    "test-cli": "cd cli && npm run test",
+    "prettier-fix": "prettier --write .",
+    "prettier-check": "prettier --check .",
+    "publish-all": "npm publish --workspaces --access public && npm publish --access public"
+  },
+  "dependencies": {
+    "@modelcontextprotocol/inspector-cli": "^0.10.2",
+    "@modelcontextprotocol/inspector-client": "^0.10.2",
+    "@modelcontextprotocol/inspector-server": "^0.10.2",
+    "@modelcontextprotocol/sdk": "^1.10.2",
+    "concurrently": "^9.0.1",
+    "shell-quote": "^1.8.2",
+    "spawn-rx": "^5.1.2",
+    "ts-node": "^10.9.2",
+    "zod": "^3.23.8"
   },
   "devDependencies": {
-    "concurrently": "^9.0.1",
-    "prettier": "3.3.3"
+    "@types/jest": "^29.5.14",
+    "@types/node": "^22.7.5",
+    "@types/shell-quote": "^1.7.5",
+    "jest-fixed-jsdom": "^0.0.9",
+    "prettier": "3.3.3",
+    "typescript": "^5.4.2"
   }
 }