fix: update adapter to latest MCP Apps spec (#163)

Author: idosal

docs/src/guide/mcp-apps.md

@@ -180,7 +180,7 @@ server.registerTool(
 | `link` | `ui/open-link` | Open a URL in a new tab |
 | `notify` | `notifications/message` | Log a message to the host |
 | `intent` | `ui/message` | Send an intent (translated to message) |
-| `ui-size-change` | `ui/notifications/size-change` | Request widget resize |
+| `ui-size-change` | `ui/notifications/size-changed` | Request widget resize |
 
 ### Host → Widget (Incoming)
 
@@ -190,6 +190,9 @@ server.registerTool(
 | `ui/notifications/tool-input-partial` | `ui-lifecycle-iframe-render-data` | Streaming partial arguments |
 | `ui/notifications/tool-result` | `ui-lifecycle-iframe-render-data` | Tool execution result |
 | `ui/notifications/host-context-changed` | `ui-lifecycle-iframe-render-data` | Theme, locale, viewport changes |
+| `ui/notifications/size-changed` | `ui-lifecycle-iframe-render-data` | Host informs of size constraints |
+| `ui/notifications/tool-cancelled` | `ui-lifecycle-tool-cancelled` | Tool execution was cancelled |
+| `ui/resource-teardown` | `ui-lifecycle-teardown` | Host notifies UI before teardown |
 
 ## Configuration Options
 
@@ -210,7 +213,7 @@ createUIResource({
 
 ## MIME Type
 
-When the MCP Apps adapter is enabled, the resource MIME type is automatically set to `text/html;profile=mcp`. This is the expected MIME type for MCP Apps-compliant hosts.
+When the MCP Apps adapter is enabled, the resource MIME type is automatically set to `text/html;profile=mcp-app`, the MCP Apps equivalent to `text/html`.
 
 ## Receiving Data in Your Widget
 

pnpm-lock.yaml

@@ -73,6 +73,7 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
+    "@modelcontextprotocol/ext-apps": "^0.0.7",
     "@modelcontextprotocol/sdk": "^1.22.0"
   }
 }

sdks/typescript/server/package.json

@@ -10,7 +10,7 @@ async function bundleAdapter(adapterName) {
   try {
     const result = await build({
       entryPoints: [join(__dirname, `../src/adapters/${adapterName}/adapter-runtime.ts`)],
-      bundle: false,
+      bundle: false, // Don't bundle - types are compile-time only
       write: false,
       format: 'esm',
       platform: 'browser',

sdks/typescript/server/scripts/bundle-adapter.js

@@ -482,14 +482,14 @@ describe('Adapter Integration', () => {
     });
 
     describe('getAdapterMimeType with MCP Apps', () => {
-      it('should return text/html;profile=mcp for MCP Apps adapter', () => {
+      it('should return text/html;profile=mcp-app for MCP Apps adapter', () => {
         const result = getAdapterMimeType({
           mcpApps: {
             enabled: true,
           },
         });
 
-        expect(result).toBe('text/html;profile=mcp');
+        expect(result).toBe('text/html;profile=mcp-app');
       });
     });
 
@@ -555,7 +555,7 @@ describe('Adapter Integration', () => {
       expect(getAdapterMimeType({ appsSdk: { enabled: true } })).toBe('text/html+skybridge');
 
       // MCP Apps adapter
-      expect(getAdapterMimeType({ mcpApps: { enabled: true } })).toBe('text/html;profile=mcp');
+      expect(getAdapterMimeType({ mcpApps: { enabled: true } })).toBe('text/html;profile=mcp-app');
 
       // No adapter
       expect(getAdapterMimeType({})).toBeUndefined();

sdks/typescript/server/src/__tests__/adapters/adapter-integration.test.ts

@@ -176,6 +176,20 @@ describe('getAdapterMimeType', () => {
     });
     expect(result).toBeUndefined();
   });
+
+  it('should return mcp-app mime type when mcpApps adapter is enabled', () => {
+    const result = getAdapterMimeType({
+      mcpApps: { enabled: true },
+    });
+    expect(result).toBe('text/html;profile=mcp-app');
+  });
+
+  it('should return undefined when mcpApps is disabled', () => {
+    const result = getAdapterMimeType({
+      mcpApps: { enabled: false },
+    });
+    expect(result).toBeUndefined();
+  });
 });
 
 describe('wrapHtmlWithAdapters', () => {