Record · mcp-apps-sdkSDK / libraryOpen sourceVerified Sep 23, 2026

MCP Apps (spec and SDK)

The official specification and SDK for MCP Apps: interactive UIs served by MCP servers inside AI chat clients.

Visit MCP Apps (spec and SDK) →View source

Sources and review

Checked against public documentation on September 23, 2026. Suitability guidance is our editorial judgment; this is not a performance benchmark or an endorsement.

Best for

Building tool UIs that work across every MCP Apps-compatible chat client.

About MCP Apps (spec and SDK)

This official MCP repository holds the MCP Apps specification and SDK for building interactive interfaces, such as charts, forms and dashboards, that MCP servers render inline in Claude, ChatGPT and other compliant clients. It includes starter templates, examples and agent skills that scaffold a new MCP App or migrate an OpenAI Apps SDK app.

MCP Apps (spec and SDK) is an open-source project written primarily in TypeScript, with 2.9k stars on GitHub. It was last updated in September 2026.

Install

npm install -S @modelcontextprotocol/ext-apps

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