Implement OAuth callback support for MCP servers

- Add react-router-dom dependency for routing support
- Create OAuthCallback component with animated background and loading spinner
- Add routing to App.tsx with /oauth/callback route
- Match styling with main app using animated-bg-container
- Use onMcpAuthorization from use-mcp library for OAuth handling
- Library already handles multiple server differentiation via state parameter
- Each MCP server gets unique OAuth flow identified by state containing server URL
- Clean up unused imports and variables in McpServerModal

examples/chat-ui/package.json

@@ -26,6 +26,7 @@
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-markdown": "^10.1.0",
+    "react-router-dom": "^7.6.2",
     "rehype-highlight": "^7.0.2",
     "remark-gfm": "^4.0.1",
     "tailwindcss": "^4.0.14",

examples/chat-ui/pnpm-lock.yaml

@@ -41,6 +41,9 @@ importers:
       react-markdown:
         specifier: ^10.1.0
         version: 10.1.0(@types/react@19.1.3)(react@19.1.0)
+      react-router-dom:
+        specifier: ^7.6.2
+        version: 7.6.2(react-dom@19.1.0(react@19.1.0))(react@19.1.0)
       rehype-highlight:
         specifier: ^7.0.2
         version: 7.0.2
@@ -1196,6 +1199,10 @@ packages:
     resolution: {integrity: sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==}
     engines: {node: '>= 0.6'}
 
+  cookie@1.0.2:
+    resolution: {integrity: sha512-9Kr/j4O16ISv8zBBhJoi4bXOYNTkFLOqSL3UDB0njXxCXNezjeyVrJyGOWtgfs/q2km1gwBcfH8q1yEGoMYunA==}
+    engines: {node: '>=18'}
+
   cors@2.8.5:
     resolution: {integrity: sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==}
     engines: {node: '>= 0.10'}
@@ -2139,6 +2146,23 @@ packages:
     resolution: {integrity: sha512-z6F7K9bV85EfseRCp2bzrpyQ0Gkw1uLoCel9XBVWPg/TjRj94SkJzUTGfOa4bs7iJvBWtQG0Wq7wnI0syw3EBQ==}
     engines: {node: '>=0.10.0'}
 
+  react-router-dom@7.6.2:
+    resolution: {integrity: sha512-Q8zb6VlTbdYKK5JJBLQEN06oTUa/RAbG/oQS1auK1I0TbJOXktqm+QENEVJU6QvWynlXPRBXI3fiOQcSEA78rA==}
+    engines: {node: '>=20.0.0'}
+    peerDependencies:
+      react: '>=18'
+      react-dom: '>=18'
+
+  react-router@7.6.2:
+    resolution: {integrity: sha512-U7Nv3y+bMimgWjhlT5CRdzHPu2/KVmqPwKUCChW8en5P3znxUqwlYFlbmyj8Rgp1SF6zs5X4+77kBVknkg6a0w==}
+    engines: {node: '>=20.0.0'}
+    peerDependencies:
+      react: '>=18'
+      react-dom: '>=18'
+    peerDependenciesMeta:
+      react-dom:
+        optional: true
+
   react@19.1.0:
     resolution: {integrity: sha512-FS+XFBNvn3GTAWq26joslQgWNoFu08F4kl0J4CgdNKADkdSGXQyTCnKteIAJy96Br6YbpEU1LSzV5dYtjMkMDg==}
     engines: {node: '>=0.10.0'}
@@ -2207,6 +2231,9 @@ packages:
     resolution: {integrity: sha512-61g9pCh0Vnh7IutZjtLGGpTA355+OPn2TyDv/6ivP2h/AdAVX9azsoxmg2/M6nZeQZNYBEwIcsne1mJd9oQItQ==}
     engines: {node: '>= 18'}
 
+  set-cookie-parser@2.7.1:
+    resolution: {integrity: sha512-IOc8uWeOZgnb3ptbCURJWNjWUPcO3ZnTTdzsurqERrP6nPyv+paC55vJM0LpOlT2ne+Ix+9+CRG1MNLlyZ4GjQ==}
+
   setprototypeof@1.2.0:
     resolution: {integrity: sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==}
 
@@ -3520,6 +3547,8 @@ snapshots:
 
   cookie@0.7.2: {}
 
+  cookie@1.0.2: {}
+
   cors@2.8.5:
     dependencies:
       object-assign: 4.1.1
@@ -4669,6 +4698,20 @@ snapshots:
 
   react-refresh@0.17.0: {}
 
+  react-router-dom@7.6.2(react-dom@19.1.0(react@19.1.0))(react@19.1.0):
+    dependencies:
+      react: 19.1.0
+      react-dom: 19.1.0(react@19.1.0)
+      react-router: 7.6.2(react-dom@19.1.0(react@19.1.0))(react@19.1.0)
+
+  react-router@7.6.2(react-dom@19.1.0(react@19.1.0))(react@19.1.0):
+    dependencies:
+      cookie: 1.0.2
+      react: 19.1.0
+      set-cookie-parser: 2.7.1
+    optionalDependencies:
+      react-dom: 19.1.0(react@19.1.0)
+
   react@19.1.0: {}
 
   rehype-highlight@7.0.2:
@@ -4794,6 +4837,8 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  set-cookie-parser@2.7.1: {}
+
   setprototypeof@1.2.0: {}
 
   sharp@0.33.5:

examples/chat-ui/src/App.tsx

@@ -1,10 +1,15 @@
+import { BrowserRouter as Router, Routes, Route } from 'react-router-dom'
 import ChatApp from "./components/ChatApp";
+import { OAuthCallback } from "./components/OAuthCallback";
 
 function App() {
   return (
-    <>
-      <ChatApp />
-    </>
+    <Router>
+      <Routes>
+        <Route path="/oauth/callback" element={<OAuthCallback />} />
+        <Route path="/" element={<ChatApp />} />
+      </Routes>
+    </Router>
   );
 }
 

examples/chat-ui/src/components/McpServerModal.tsx

@@ -1,4 +1,4 @@
-import React, { useState, useRef, useEffect } from 'react'
+import React, { useState, useEffect } from 'react'
 import { X, Info, Settings, Plus, Trash2, Power, PowerOff } from 'lucide-react'
 import { useMcp, type Tool } from 'use-mcp/react'
 
@@ -63,7 +63,7 @@ const McpServerModal: React.FC<McpServerModalProps> = ({
     const stored = localStorage.getItem('mcpServerToolCounts')
     return stored ? JSON.parse(stored) : {}
   })
-  const logRef = useRef<HTMLDivElement>(null)
+  // const logRef = useRef<HTMLDivElement>(null) // Removed for now as debug logs not implemented in multi-server version
 
   // Save servers to localStorage whenever they change
   useEffect(() => {

examples/chat-ui/src/components/OAuthCallback.tsx

@@ -0,0 +1,22 @@
+import { useEffect } from 'react'
+import { onMcpAuthorization } from 'use-mcp'
+
+export function OAuthCallback() {
+  useEffect(() => {
+    onMcpAuthorization()
+  }, [])
+
+  return (
+    <div className="min-h-screen animated-bg-container flex items-center justify-center p-4">
+      <div className="bg-white rounded-lg shadow-xl p-8 text-center max-w-md w-full">
+        <h1 className="text-2xl font-bold text-zinc-900 mb-4">Authenticating...</h1>
+        <p className="text-zinc-600 mb-2">Please wait while we complete your authentication.</p>
+        <p className="text-sm text-zinc-500">This window should close automatically.</p>
+        
+        <div className="mt-6">
+          <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600 mx-auto"></div>
+        </div>
+      </div>
+    </div>
+  )
+}