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What is this?
FastAPI-MCP turns your existing FastAPI endpoints into Model Context Protocol (MCP) tools, so AI agents like Claude or Cursor can call your API directly, with authentication built in.
FastAPI-MCP turns your existing FastAPI endpoints into Model Context Protocol (MCP) tools, so AI agents like Claude or Cursor can call your API directly, with authentication built in.Is this a standalone MCP server or a library I add to my app?It is a Python library/extension you add to your FastAPI codebase, not a separate converter tool. It is designed as a native extension of FastAPI rather than something that just generates MCP tools from your OpenAPI spec.
It is a Python library/extension you add to your FastAPI codebase, not a separate converter tool. It is designed as a native extension of FastAPI rather than something that just generates MCP tools from your OpenAPI spec.How do I add MCP support to my FastAPI app?Install the package with uv or pip, then add an MCP server directly to your FastAPI application in a couple of lines; the auto-generated MCP server is immediately available.
Install the package with uv or pip, then add an MCP server directly to your FastAPI application in a couple of lines; the auto-generated MCP server is immediately available.What do I need installed before using it?You need Python 3.10+ (3.12 recommended) and the uv package manager is the recommended way to install it, though pip works too.
You need Python 3.10+ (3.12 recommended) and the uv package manager is the recommended way to install it, though pip works too.Does it just convert my OpenAPI spec into MCP tools like other converters?No — it explicitly avoids being 'just another OpenAPI -> MCP converter.' It talks to your app directly over ASGI instead of making HTTP calls, so no separate conversion step or extra network hop is needed.
No — it explicitly avoids being 'just another OpenAPI -> MCP converter.' It talks to your app directly over ASGI instead of making HTTP calls, so no separate conversion step or extra network hop is needed.Who is this built for?Developers who already have a FastAPI backend and want to expose it to AI agents without building a separate integration layer.
Developers who already have a FastAPI backend and want to expose it to AI agents without building a separate integration layer.How does authentication work for the exposed MCP tools?FastAPI-MCP reuses your existing FastAPI Depends() functions, so you secure MCP endpoints exactly the way you already secure your REST endpoints.
FastAPI-MCP reuses your existing FastAPI Depends() functions, so you secure MCP endpoints exactly the way you already secure your REST endpoints.Can I run the MCP server separately from my main API?Yes, deployment is flexible — you can mount the MCP server onto the same FastAPI app or deploy it separately if you prefer.
Yes, deployment is flexible — you can mount the MCP server onto the same FastAPI app or deploy it separately if you prefer.Is there a hosted option if I don't want to self-manage it?Yes, the creators (Tadata) offer a managed hosted solution at tadata.com for teams who don't want to run FastAPI-MCP themselves.
Yes, the creators (Tadata) offer a managed hosted solution at tadata.com for teams who don't want to run FastAPI-MCP themselves.Does it preserve my existing API documentation and schemas?Yes, it preserves the request/response model schemas and endpoint documentation exactly as they appear in Swagger.
Yes, it preserves the request/response model schemas and endpoint documentation exactly as they appear in Swagger.What are similar projects?fastmcp, evenfire, mcp-use, headroom, gpt4free, gemini-notebook-mcp-cli, capcut-mate, nautilus-compass
fastmcp, evenfire, mcp-use, headroom, gpt4free, gemini-notebook-mcp-cli, capcut-mate, nautilus-compassWhich topics is it in?asgi, mcp-servers, windsurf, pip, authorization, openapi, python-library, fastapi, model-context-protocol, authentication, cursor, agents
asgi, mcp-servers, windsurf, pip, authorization, openapi, python-library, fastapi, model-context-protocol, authentication, cursor, agents