Merge remote-tracking branch 'origin/main' into feat/app-tool-registration

# Conflicts:
#	examples/pdf-server/src/mcp-app.ts
#	src/app.examples.ts
#	src/app.ts

Author: ochafik

.github/workflows/ci.yml

@@ -103,7 +103,15 @@ jobs:
 
       - name: Build MCPB bundle (pdf-server)
         if: runner.os == 'Linux' && matrix.name == 'Linux x64'
-        run: npx -y @anthropic-ai/mcpb pack
+        run: node build-mcpb.mjs
+        working-directory: examples/pdf-server
+
+      - name: Smoke-test MCPB bundle starts
+        if: runner.os == 'Linux' && matrix.name == 'Linux x64'
+        run: |
+          unzip -q pdf-server.mcpb -d .mcpb-smoke
+          node .mcpb-smoke/dist/index.js --stdio < /dev/null 2>&1 | tee /tmp/mcpb-smoke.log
+          grep -q "Ready" /tmp/mcpb-smoke.log
         working-directory: examples/pdf-server
 
   e2e:

.github/workflows/npm-publish.yml

@@ -159,12 +159,8 @@ jobs:
           cache: npm
       - run: npm ci
 
-      - name: Build pdf-server
-        run: npm run build --workspace examples/pdf-server
-
-      - name: Pack MCPB bundle
-        run: npx -y @anthropic-ai/mcpb pack
-        working-directory: examples/pdf-server
+      - name: Build pdf-server + MCPB bundle
+        run: npm run build:mcpb --workspace examples/pdf-server
 
       - name: Upload MCPB to release
         run: gh release upload "${{ github.event.release.tag_name }}" examples/pdf-server/*.mcpb --clobber

.gitignore

@@ -15,4 +15,6 @@ __pycache__/
 *.pyc
 
 # MCPB bundles (built artifacts)
-*.mcpb
+*.mcpb
+.mcpb-stage/
+.mcpb-smoke/

examples/basic-host/package.json

@@ -1,7 +1,7 @@
 {
   "homepage": "https://github.com/modelcontextprotocol/ext-apps/tree/main/examples/basic-host",
   "name": "@modelcontextprotocol/ext-apps-basic-host",
-  "version": "1.3.1",
+  "version": "1.5.0",
   "type": "module",
   "scripts": {
     "build": "tsc --noEmit && concurrently \"cross-env INPUT=index.html vite build\" \"cross-env INPUT=sandbox.html vite build\"",
@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "^1.0.0",
-    "@modelcontextprotocol/sdk": "^1.24.0",
+    "@modelcontextprotocol/sdk": "^1.29.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "zod": "^4.1.13"

examples/basic-host/src/implementation.ts

@@ -306,6 +306,28 @@ export function newAppBridge(
     appBridge.sendHostContextChange({ theme: newTheme });
   });
 
+  // Per spec, the host SHOULD notify the view when container dimensions
+  // change. A ResizeObserver on the iframe covers window resize, layout
+  // shifts, and the inline↔fullscreen panel toggle (which React applies
+  // a tick after onrequestdisplaymode returns — sending containerDimensions
+  // alongside displayMode there would race the layout). Height stays
+  // flexible (maxHeight) so the view can keep driving it via sendSizeChanged.
+  const iframeResizeObserver = new ResizeObserver(([entry]) => {
+    const width = Math.round(entry.contentRect.width);
+    if (width > 0) {
+      appBridge.sendHostContextChange({
+        containerDimensions: { width, maxHeight: 6000 },
+      });
+    }
+  });
+  iframeResizeObserver.observe(iframe);
+  // AppBridge inherits Protocol's onclose hook — chain disposal there.
+  const prevOnclose = appBridge.onclose;
+  appBridge.onclose = () => {
+    iframeResizeObserver.disconnect();
+    prevOnclose?.();
+  };
+
   // Register all handlers before calling connect(). The view can start
   // sending requests immediately after the initialization handshake, so any
   // handlers registered after connect() might miss early requests.

examples/basic-server-preact/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/server-basic-preact",
-  "version": "1.3.1",
+  "version": "1.5.0",
   "type": "module",
   "description": "Basic MCP App Server example using Preact",
   "repository": {
@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "^1.0.0",
-    "@modelcontextprotocol/sdk": "^1.24.0",
+    "@modelcontextprotocol/sdk": "^1.29.0",
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "preact": "^10.0.0",

examples/basic-server-react/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/server-basic-react",
-  "version": "1.3.1",
+  "version": "1.5.0",
   "type": "module",
   "description": "Basic MCP App Server example using React",
   "repository": {
@@ -35,7 +35,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "^1.0.0",
-    "@modelcontextprotocol/sdk": "^1.24.0",
+    "@modelcontextprotocol/sdk": "^1.29.0",
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "react": "^19.2.0",

examples/basic-server-solid/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/server-basic-solid",
-  "version": "1.3.1",
+  "version": "1.5.0",
   "type": "module",
   "description": "Basic MCP App Server example using Solid",
   "repository": {
@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "^1.0.0",
-    "@modelcontextprotocol/sdk": "^1.24.0",
+    "@modelcontextprotocol/sdk": "^1.29.0",
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "solid-js": "1.9.10",

examples/basic-server-svelte/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/server-basic-svelte",
-  "version": "1.3.1",
+  "version": "1.5.0",
   "type": "module",
   "description": "Basic MCP App Server example using Svelte",
   "repository": {
@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "^1.0.0",
-    "@modelcontextprotocol/sdk": "^1.24.0",
+    "@modelcontextprotocol/sdk": "^1.29.0",
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "svelte": "^5.0.0",

examples/basic-server-vanillajs/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/server-basic-vanillajs",
-  "version": "1.3.1",
+  "version": "1.5.0",
   "type": "module",
   "description": "Basic MCP App Server example using vanilla JavaScript",
   "repository": {
@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/ext-apps": "^1.0.0",
-    "@modelcontextprotocol/sdk": "^1.24.0",
+    "@modelcontextprotocol/sdk": "^1.29.0",
     "cors": "^2.8.5",
     "express": "^5.1.0",
     "zod": "^4.1.13"