Changed from min-width: 425px to:
- width: 100%
- max-width: 425px
- box-sizing: border-box
This allows the apps to shrink on narrow viewports (like mobile
or when embedded in native WebViews) instead of causing horizontal
scrolling.
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Co-authored-by: Claude <noreply@anthropic.com>
* feat: implement ui/notifications/tool-cancelled throughout SDK
Wire the tool-cancelled notification that hosts MUST send when tool
execution is cancelled (user action, timeout, classifier intervention, etc.):
- Add McpUiToolCancelledNotification type in spec.types.ts
- Generate Zod schema via ts-to-zod
- Add AppBridge.sendToolCancelled() method for hosts
- Add App.ontoolcancelled setter for guest UIs
- Export type and schema from types.ts
- Add tests for notification with/without reason
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
* feat: add App.onteardown handler for graceful shutdown
Wire the guest UI side of ui/resource-teardown request:
- Add onteardown setter in App class for guest UIs to handle teardown
- Allow ui/resource-teardown in assertRequestHandlerCapability
- Import McpUiResourceTeardownRequest/Result types
- Add tests for sync and async cleanup handlers
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Co-Authored-By: Claude <noreply@anthropic.com>
* feat(example): wire tool-cancelled and teardown in basic-host
Update basic-host example to properly use the new notifications:
- Send sendToolCancelled when tool call promise rejects
- Send sendResourceTeardown when React component unmounts
- Store appBridge ref for cleanup access
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Co-Authored-By: Claude <noreply@anthropic.com>
* fix(example): implement graceful teardown per spec recommendation
Address review feedback: the host now waits for guest's teardown
response before unmounting, following the spec: "Host SHOULD wait
for a response before tearing down the resource (to prevent data loss)."
Changes:
- Add close button to tool call panels
- Two-phase unmount: isDestroying state dims panel and disables events
- sendResourceTeardown() completes before component removal
- Non-app tool results close immediately
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Co-Authored-By: Claude <noreply@anthropic.com>
* feat(examples): add onteardown handlers to demo apps
Demonstrate graceful shutdown with simulated 500ms cleanup work.
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Co-Authored-By: Claude <noreply@anthropic.com>
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Co-authored-by: Claude <noreply@anthropic.com>
Not all MCP clients support structuredContent in MCP tool results, so
examples now return data as JSON in content and parse it client-side.
Pattern used:
- Server: content: [{ type: "text", text: JSON.stringify(data) }]
- Client: JSON.parse(result.content!.filter(...).map(...).join(""))
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Demonstrates MCP App SDK usage with vanilla JavaScript (no framework),
providing parity with the existing basic-server-react example.
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Co-Authored-By: Claude <noreply@anthropic.com>
