modelcontextprotocol/ext-apps
Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers
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Where it stands
Rank, growth pace and release cadence relative to everything GStars tracks.
5 releases in the last 90 days, the latest 1 day ago, with 47 contributors on GitHub.
Peaked at #22 in the weekly ranking the week of Feb 1, its best in the past year.
Use Cases & Benefits
- Provides an SDK and specification for embedding interactive AI chatbot UIs served by MCP servers within conversational clients.
- Standardizes delivery and rendering of interactive UI elements inline in conversations across any compliant MCP host.
- Use for building interactive UI tools that run inside MCP-enabled chat clients using TypeScript and React hooks.
- Use for embedding and managing MCP Apps in custom chat applications as a host developer with bidirectional communication support.
- Use for creating diverse interactive demos like 3D visualizations, charts, video players, and real-time transcription integrated in chatbots.
Should you depend on it?
License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.
License
Other
GitHub could not identify this license; read the LICENSE file before depending on it.
Community files
- README: present
- Contributing guide: present
- Code of conduct: present
Watch-outs
- License not identified by GitHub; read the LICENSE file before depending on it.
General guidance from repository metadata, not legal advice. How we score
From the README
This repo contains the SDK and specification for MCP Apps Extension (SEP-1865).
MCP Apps are a proposed standard inspired by MCP-UI and OpenAI's Apps SDK to allow MCP Servers to display interactive UI elements in conversational MCP clients / chatbots.
MCP tools return text and structured data. That works for many cases, but not when you need an interactive UI, like a chart, form, or video player.
MCP Apps provide a standardized way to deliver interactive UIs from MCP servers. Your UI renders inline in the conversation, in context, in any compliant host.
Daily snapshots
Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots
+366 stars over 90 days across 8 snapshot days; best day +1 on Aug 1.
Forks
420+63
Open issues
241+53
Compared with peers in AI
Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth
| Repository | Stars | +7d | Health | Last release |
|---|---|---|---|---|
| thedotmack/claude-mem | 113.6K | +8.8K | 35 | today |
| D4Vinci/Scrapling | 98.1K | +6.9K | 65 | 1 day ago |
| Leonxlnx/taste-skill | 110.7K | +5.2K | 55 | 1 day ago |
| calesthio/OpenMontage | 77.2K | +4.2K | 40 | — |
| heygen-com/hyperframes | 79.6K | +4.1K | 45 | today |
| modelcontextprotocol/ext-apps | 3.0K | — | 65 | 1 day ago |
| Category median | 98.1K | +5.2K | 45 | — |
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