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HomeDocsModel Context Protocol 2 Sep 2026
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MCP Apps changedextensions/apps/overview

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Upstream edited this page at 2 Sep 2026 16:29 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 20 Oct 2026 20:07 UTC.

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33> Interactive UI applications that render inside MCP hosts like Claude Desktop
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5<Tip>
6 For comprehensive API documentation, advanced patterns, and the full specification, visit the [official MCP Apps documentation](https://apps.extensions.modelcontextprotocol.io).
7</Tip>
5> [!TIP]
6>
7> For comprehensive API documentation, advanced patterns, and the full specification, visit the [official MCP Apps documentation](https://apps.extensions.modelcontextprotocol.io).
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99Text responses can only go so far. Sometimes users need to interact with data, not
1010just read about it. MCP Apps let servers return interactive HTML interfaces (data
1111visualizations, forms, dashboards) that render directly in the chat.
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13<Frame caption="Excalidraw MCP App, running in Claude">
14 <img src="https://mintcdn.com/mcp/jbEkS7m9mV8aY_kB/images/apps/excalidraw.gif?s=c783b088f3c687e4dd4cf05c0d20f325" alt="An Excalidraw MCP App drawing a sequence diagram inside a Claude conversation" width="620" height="510" data-path="images/apps/excalidraw.gif" />
15</Frame>
13![An Excalidraw MCP App drawing a sequence diagram inside a Claude conversation](https://mintcdn.com/mcp/jbEkS7m9mV8aY_kB/images/apps/excalidraw.gif?s=c783b088f3c687e4dd4cf05c0d20f325)
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1715## Why not just build a web app?
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165163 
166164## Client support
167165 
168<Note>
169 MCP Apps is an extension to the [core MCP specification](/specification/latest). Host support varies by client.
170</Note>
166> [!NOTE]
167>
168> MCP Apps is an extension to the [core MCP specification](/specification/latest). Host support varies by client.
171169 
172170MCP Apps are currently supported by [Claude](https://claude.ai),
173171[Claude Desktop](https://claude.ai/download),
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