MCP (Model Context Protocol) is the emerging standard to define how AI agents communicate with applications. Using FastAPI-MCP, creating a secured MCP server to your application takes only 3 lines of code:

from fastapi import FastAPI
from fastapi_mcp import FastApiMCP

app = FastAPI()

mcp = FastApiMCP(app)
mcp.mount()

That’s it! Your auto-generated MCP server is now available at https://app.base.url/mcp

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Features

  • Authentication built in, using your existing FastAPI dependencies!

  • FastAPI-native: Not just another OpenAPI -> MCP converter

  • Zero configuration required - just point it at your FastAPI app and it works

  • Preserving schemas of your request models and response models

  • Preserve documentation of all your endpoints, just as it is in Swagger

  • Flexible deployment - Mount your MCP server to the same app, or deploy separately

  • ASGI transport - Uses FastAPI’s ASGI interface directly for efficient communication