mcp-use 🔌 MCP server Open source

What it does

mcp-use is a fullstack TypeScript framework for building Model Context Protocol servers and the interactive "apps" that go with them — the kind of tool-plus-UI experiences ChatGPT Apps and Claude connectors expect. Rather than hand-rolling a bare MCP server, you scaffold a project that wires tools, typed schemas and UI views together in one codebase.

Tools it gives your agent

• Fully typed schemas that flow from tool definitions through to structured results
• Native React Views bound directly to tools, for building interactive UI an agent can render, not just text replies
• A built-in Inspector for browser-based debugging and testing of your server
• Agent-first CLI workflows for scaffolding, invoking, and deploying servers
• Screenshot verification for validating Views during development
• One-line OAuth adapters and support for the MCP 2026 protocol revision

Works with

Any MCP-capable client, with first-class attention to ChatGPT Apps and Claude connectors; includes tooling for remote deployment through the maintainer's Manufact platform.

How to install or connect

npx -y create-mcp-use-app@latest

Then run npm run dev and open http://localhost:3000/mcp/inspector to test the generated server locally.

Maintenance and safety

MIT licensed with 10.7k stars, 1,626 commits and 1.5k forks, plus 23 open issues and 35 open pull requests — an actively developed project. As a code-generation/scaffolding tool it runs locally under your control; review generated server code before deploying it with real credentials or OAuth secrets.

Who should use it

Developers building a new MCP server who want typed tools, an interactive UI layer, and a debugging Inspector out of the box, rather than assembling those pieces from the raw MCP SDK by hand — particularly teams targeting ChatGPT Apps or Claude connectors specifically.