Merge pull request #8 from modelcontextprotocol/ashwin/history

add command history

client/src/App.tsx

@@ -19,6 +19,7 @@ import ResourcesTab, { Resource } from "./components/ResourcesTab";
 import NotificationsTab from "./components/NotificationsTab";
 import PromptsTab, { Prompt } from "./components/PromptsTab";
 import ToolsTab, { Tool as ToolType } from "./components/ToolsTab";
+import History from "./components/CommandHistory";
 
 const App = () => {
   const [socket, setSocket] = useState<WebSocket | null>(null);
@@ -39,6 +40,9 @@ const App = () => {
     "/Users/ashwin/code/example-servers/build/everything/index.js",
   );
   const [mcpConnected, setMcpConnected] = useState<boolean>(false);
+  const [requestHistory, setRequestHistory] = useState<
+    Array<{ request: string; response: string | null }>
+  >([]);
 
   useEffect(() => {
     const ws = new WebSocket("ws://localhost:3000");
@@ -75,6 +79,8 @@ const App = () => {
       } else if (message.type === "connected") {
         setMcpConnected(true);
       }
+
+      updateRequestHistory(message);
     };
 
     ws.onerror = () => {
@@ -89,10 +95,29 @@ const App = () => {
     return () => ws.close();
   }, []);
 
+  const updateRequestHistory = (response: unknown) => {
+    setRequestHistory((prev) => {
+      const lastRequest = prev[prev.length - 1];
+      if (lastRequest && lastRequest.response === null) {
+        const updatedHistory = [...prev];
+        updatedHistory[updatedHistory.length - 1] = {
+          ...lastRequest,
+          response: JSON.stringify(response),
+        };
+        return updatedHistory;
+      }
+      return prev;
+    });
+  };
+
   const sendWebSocketMessage = (message: object) => {
     if (socket) {
       console.log("Sending WebSocket message:", message);
       socket.send(JSON.stringify(message));
+      setRequestHistory((prev) => [
+        ...prev,
+        { request: JSON.stringify(message), response: null },
+      ]);
     }
   };
 
@@ -136,97 +161,100 @@ const App = () => {
       <Sidebar connectionStatus={connectionStatus} />
       <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">
-          <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">
-              <Input
-                placeholder="Command"
-                value={command}
-                onChange={(e) => setCommand(e.target.value)}
-              />
-              <Input
-                placeholder="Arguments (space-separated)"
-                value={args}
-                onChange={(e) => setArgs(e.target.value)}
-              />
-              <Button onClick={connectMcpServer}>
-                <Play className="w-4 h-4 mr-2" />
-                Connect
-              </Button>
-            </div>
-          </div>
-          {mcpConnected ? (
-            <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="notifications" disabled>
-                  <Bell className="w-4 h-4 mr-2" />
-                  Notifications
-                </TabsTrigger>
-                <TabsTrigger value="tools" disabled>
-                  <Hammer className="w-4 h-4 mr-2" />
-                  Tools
-                </TabsTrigger>
-                <TabsTrigger value="console" disabled>
-                  <Terminal className="w-4 h-4 mr-2" />
-                  Console
-                </TabsTrigger>
-              </TabsList>
-
-              <div className="w-full">
-                <ResourcesTab
-                  resources={resources}
-                  listResources={listResources}
-                  readResource={readResource}
-                  selectedResource={selectedResource}
-                  setSelectedResource={setSelectedResource}
-                  resourceContent={resourceContent}
-                  error={error}
+        <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">
+                <Input
+                  placeholder="Command"
+                  value={command}
+                  onChange={(e) => setCommand(e.target.value)}
                 />
-                <NotificationsTab />
-                <PromptsTab
-                  prompts={prompts}
-                  listPrompts={listPrompts}
-                  getPrompt={getPrompt}
-                  selectedPrompt={selectedPrompt}
-                  setSelectedPrompt={setSelectedPrompt}
-                  promptContent={promptContent}
-                  error={error}
+                <Input
+                  placeholder="Arguments (space-separated)"
+                  value={args}
+                  onChange={(e) => setArgs(e.target.value)}
                 />
-                <RequestsTab />
-                <ToolsTab
-                  tools={tools}
-                  listTools={listTools}
-                  callTool={callTool}
-                  selectedTool={selectedTool}
-                  setSelectedTool={setSelectedTool}
-                  toolResult={toolResult}
-                  error={error}
-                />
-                <ConsoleTab />
+                <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>
-          )}
+            {mcpConnected ? (
+              <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="notifications" disabled>
+                    <Bell className="w-4 h-4 mr-2" />
+                    Notifications
+                  </TabsTrigger>
+                  <TabsTrigger value="tools" disabled>
+                    <Hammer className="w-4 h-4 mr-2" />
+                    Tools
+                  </TabsTrigger>
+                  <TabsTrigger value="console" disabled>
+                    <Terminal className="w-4 h-4 mr-2" />
+                    Console
+                  </TabsTrigger>
+                </TabsList>
+
+                <div className="w-full">
+                  <ResourcesTab
+                    resources={resources}
+                    listResources={listResources}
+                    readResource={readResource}
+                    selectedResource={selectedResource}
+                    setSelectedResource={setSelectedResource}
+                    resourceContent={resourceContent}
+                    error={error}
+                  />
+                  <NotificationsTab />
+                  <PromptsTab
+                    prompts={prompts}
+                    listPrompts={listPrompts}
+                    getPrompt={getPrompt}
+                    selectedPrompt={selectedPrompt}
+                    setSelectedPrompt={setSelectedPrompt}
+                    promptContent={promptContent}
+                    error={error}
+                  />
+                  <RequestsTab />
+                  <ToolsTab
+                    tools={tools}
+                    listTools={listTools}
+                    callTool={callTool}
+                    selectedTool={selectedTool}
+                    setSelectedTool={setSelectedTool}
+                    toolResult={toolResult}
+                    error={error}
+                  />
+                  <ConsoleTab />
+                </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>
       </div>
+      <History requestHistory={requestHistory} />
     </div>
   );
 };

client/src/components/History.tsx

@@ -0,0 +1,94 @@
+import { useState } from "react";
+import { Copy } from "lucide-react";
+
+const History = ({
+  requestHistory,
+}: {
+  requestHistory: Array<{ request: string; response: string | null }>;
+}) => {
+  const [expandedRequests, setExpandedRequests] = useState<{
+    [key: number]: boolean;
+  }>({});
+
+  const toggleRequestExpansion = (index: number) => {
+    setExpandedRequests((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-y-auto">
+      <h2 className="text-lg font-semibold mb-4">History</h2>
+      <ul className="space-y-3">
+        {requestHistory
+          .slice()
+          .reverse()
+          .map((request, index) => (
+            <li
+              key={index}
+              className="text-sm text-gray-600 bg-gray-100 p-2 rounded"
+            >
+              <div
+                className="flex justify-between items-center cursor-pointer"
+                onClick={() =>
+                  toggleRequestExpansion(requestHistory.length - 1 - index)
+                }
+              >
+                <span className="font-mono">
+                  {requestHistory.length - index}.{" "}
+                  {JSON.parse(request.request).type}
+                </span>
+                <span>
+                  {expandedRequests[requestHistory.length - 1 - index]
+                    ? "▼"
+                    : "▶"}
+                </span>
+              </div>
+              {expandedRequests[requestHistory.length - 1 - index] && (
+                <>
+                  <div className="mt-2">
+                    <div className="flex justify-between items-center mb-1">
+                      <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>
+                  </div>
+                  {request.response && (
+                    <div className="mt-2">
+                      <div className="flex justify-between items-center mb-1">
+                        <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>
+                    </div>
+                  )}
+                </>
+              )}
+            </li>
+          ))}
+      </ul>
+    </div>
+  );
+};
+
+export default History;