Modelcontextprotocol Ext Apps
Model Context Protocol Ext Apps is a Claude Code plugin for the Build phase that provides the official MCP Apps spec and SDK for embedded chat UIs served by MCP servers.
by modelcontextprotocol · github.com/modelcontextprotocol/ext-apps
Install the official MCP Apps plugin to build and serve embedded UIs from MCP servers inside AI chat clients using the MCP Apps spec and SDK.
Add it to Claude Code
Install the plugin in Claude Code. One command, paste-ready.
/plugin install modelcontextprotocol-ext-apps@modelcontextprotocol/ext-appsBuilt to be called by your agent
Skillselion is itself an MCP server. Your agent can pull this entry and a paste-ready install config straight from the API - no copy-paste.
Retrieve this entry with skillselion.get_details("plugin:modelcontextprotocol/ext-apps") and the paste-ready config with skillselion.get_install_config("plugin:modelcontextprotocol/ext-apps").
What it does
Model Context Protocol Ext Apps is the official Claude Code plugin entry for the MCP Apps protocol—the standard and SDK for embedding interactive UIs in AI chatbots while those interfaces are served by MCP servers. Solo builders shipping agent-first products often need more than text tools: dashboards, forms, and previews inside the conversation. This bundle points you at the canonical spec and creation path rather than a one-off iframe hack. Catalog keywords highlight apps, creating, mcp, and skills. Expect intermediate familiarity with MCP servers, frontend assets, and how your host client loads ext-apps. It is a protocol and SDK focus, not a hosted UI marketplace. Pair it with your backend MCP tools when you are building integrated agent experiences during the product build phase.
Highlights
- Official MCP Apps specification and SDK repository
- Standard for UIs embedded in AI chatbots served by MCP servers
- Creating MCP Apps called out in catalog keywords alongside mcp and skills
- Community bundle with 1 plugin from modelcontextprotocol/ext-apps
- Bridges MCP tool servers with interactive in-chat user interfaces
Why builders use it
Text-only MCP tools limit agent products because builders lack a standard way to ship interactive UI inside chat clients.
After install, you can align with the official MCP Apps protocol and SDK to create server-served interfaces your agent host can embed in chat.
At a glance
- Type - Plugin in Development Tools.
- Adoption - 0 installs, 2k stars, 0 votes.
FAQ
Who is modelcontextprotocol-ext-apps for?
It is for engineers implementing MCP servers who want the official MCP Apps standard for UIs embedded in AI chatbots.
When should I use modelcontextprotocol-ext-apps?
Use it during Build integrations when you are creating MCP Apps that render interactive UI inside your agent client.
How do I add modelcontextprotocol-ext-apps to my agent?
Add the modelcontextprotocol/ext-apps Claude Code plugin, then follow the repo spec and SDK to register and serve your MCP App from your server.
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