diff --git a/client/package.json b/client/package.json
index 0734ea9..3b50ab1 100644
--- a/client/package.json
+++ b/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/inspector-client",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "description": "Client-side application for the Model Context Protocol inspector",
   "license": "MIT",
   "author": "Anthropic, PBC (https://anthropic.com)",
diff --git a/client/src/App.tsx b/client/src/App.tsx
index fb78dc6..5964bd8 100644
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -476,6 +476,10 @@ const App = () => {
     setLogLevel(level);
   };
 
+  const clearStdErrNotifications = () => {
+    setStdErrNotifications([]);
+  };
+
   if (window.location.pathname === "/oauth/callback") {
     const OAuthCallback = React.lazy(
       () => import("./components/OAuthCallback"),
@@ -513,6 +517,7 @@ const App = () => {
         logLevel={logLevel}
         sendLogLevelRequest={sendLogLevelRequest}
         loggingSupported={!!serverCapabilities?.logging || false}
+        clearStdErrNotifications={clearStdErrNotifications}
       />
       <div className="flex-1 flex flex-col overflow-hidden">
         <div className="flex-1 overflow-auto">
diff --git a/client/src/components/JsonView.tsx b/client/src/components/JsonView.tsx
index 3fcbf8e..bd7ef64 100644
--- a/client/src/components/JsonView.tsx
+++ b/client/src/components/JsonView.tsx
@@ -227,7 +227,7 @@ const JsonNode = memo(
             )}
             <pre
               className={clsx(
-                typeStyleMap.string,
+                isError ? typeStyleMap.error : typeStyleMap.string,
                 "break-all whitespace-pre-wrap",
               )}
             >
diff --git a/client/src/components/Sidebar.tsx b/client/src/components/Sidebar.tsx
index 7c30a45..c736558 100644
--- a/client/src/components/Sidebar.tsx
+++ b/client/src/components/Sidebar.tsx
@@ -56,6 +56,7 @@ interface SidebarProps {
   onConnect: () => void;
   onDisconnect: () => void;
   stdErrNotifications: StdErrNotification[];
+  clearStdErrNotifications: () => void;
   logLevel: LoggingLevel;
   sendLogLevelRequest: (level: LoggingLevel) => void;
   loggingSupported: boolean;
@@ -82,6 +83,7 @@ const Sidebar = ({
   onConnect,
   onDisconnect,
   stdErrNotifications,
+  clearStdErrNotifications,
   logLevel,
   sendLogLevelRequest,
   loggingSupported,
@@ -530,9 +532,19 @@ const Sidebar = ({
             {stdErrNotifications.length > 0 && (
               <>
                 <div className="mt-4 border-t border-gray-200 pt-4">
-                  <h3 className="text-sm font-medium">
-                    Error output from MCP server
-                  </h3>
+                  <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
diff --git a/client/src/components/__tests__/Sidebar.test.tsx b/client/src/components/__tests__/Sidebar.test.tsx
index c12d359..980dc01 100644
--- a/client/src/components/__tests__/Sidebar.test.tsx
+++ b/client/src/components/__tests__/Sidebar.test.tsx
@@ -30,6 +30,7 @@ describe("Sidebar Environment Variables", () => {
     onConnect: jest.fn(),
     onDisconnect: jest.fn(),
     stdErrNotifications: [],
+    clearStdErrNotifications: jest.fn(),
     logLevel: "info" as const,
     sendLogLevelRequest: jest.fn(),
     loggingSupported: true,
diff --git a/package-lock.json b/package-lock.json
index dcc03d4..89e5240 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,20 +1,20 @@
 {
   "name": "@modelcontextprotocol/inspector",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@modelcontextprotocol/inspector",
-      "version": "0.8.2",
+      "version": "0.9.0",
       "license": "MIT",
       "workspaces": [
         "client",
         "server"
       ],
       "dependencies": {
-        "@modelcontextprotocol/inspector-client": "^0.8.2",
-        "@modelcontextprotocol/inspector-server": "^0.8.2",
+        "@modelcontextprotocol/inspector-client": "^0.9.0",
+        "@modelcontextprotocol/inspector-server": "^0.9.0",
         "concurrently": "^9.0.1",
         "shell-quote": "^1.8.2",
         "spawn-rx": "^5.1.2",
@@ -32,7 +32,7 @@
     },
     "client": {
       "name": "@modelcontextprotocol/inspector-client",
-      "version": "0.8.2",
+      "version": "0.9.0",
       "license": "MIT",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.9.0",
@@ -9500,7 +9500,7 @@
     },
     "server": {
       "name": "@modelcontextprotocol/inspector-server",
-      "version": "0.8.2",
+      "version": "0.9.0",
       "license": "MIT",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.9.0",
diff --git a/package.json b/package.json
index f9d2217..a3e10c1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/inspector",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "description": "Model Context Protocol inspector",
   "license": "MIT",
   "author": "Anthropic, PBC (https://anthropic.com)",
@@ -36,8 +36,8 @@
     "publish-all": "npm publish --workspaces --access public && npm publish --access public"
   },
   "dependencies": {
-    "@modelcontextprotocol/inspector-client": "^0.8.2",
-    "@modelcontextprotocol/inspector-server": "^0.8.2",
+    "@modelcontextprotocol/inspector-client": "^0.9.0",
+    "@modelcontextprotocol/inspector-server": "^0.9.0",
     "concurrently": "^9.0.1",
     "shell-quote": "^1.8.2",
     "spawn-rx": "^5.1.2",
diff --git a/server/package.json b/server/package.json
index 248db61..4927ce0 100644
--- a/server/package.json
+++ b/server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/inspector-server",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "description": "Server-side application for the Model Context Protocol inspector",
   "license": "MIT",
   "author": "Anthropic, PBC (https://anthropic.com)",