FastAPI-MCP

Expose FastAPI endpoints as MCP tools with built-in authentication

A library that automatically exposes FastAPI application endpoints as Model Context Protocol (MCP) tools. Leverages existing FastAPI authentication with minimal configuration while preserving OpenAPI schemas and descriptions for use with Claude, ChatGPT, and Cursor.

Author: tadata-org

Stars: 11,792

GitHub

Install: pip install fastapi-mcp

Key Features

• Automatically converts FastAPI endpoints to MCP tools
• Leverages existing FastAPI authentication seamlessly
• Preserves OpenAPI schemas and documentation
• Builds MCP servers with minimal configuration
• Compatible with Claude, ChatGPT, and Cursor

Use Cases

• Make existing APIs AI-ready — Enable Claude and ChatGPT to directly access and use your existing FastAPI applications without rebuilding.
• Internal tool integration — Connect internal systems and database APIs to AI assistants for seamless automation and querying.
• Microservices integration — Unify management and execution of multiple FastAPI microservices through a single MCP interface.
• AI-driven workflow automation — Build automated workflows in Cursor or Claude that leverage your existing APIs as building blocks.