FastAPI-MCP
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A zero-configuration tool to automatically expose FastAPI endpoints as MCP tools.
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You are not limited to serving the MCP on the same FastAPI app from which it was created.
You can create an MCP server from one FastAPI app, and mount it to a different app:
from fastapi import FastAPI from fastapi_mcp import FastApiMCP # Your API app api_app = FastAPI() # ... define your API endpoints on api_app ... # A separate app for the MCP server mcp_app = FastAPI() # Create MCP server from the API app mcp = FastApiMCP( api_app, base_url="http://api-host:8001", # The URL where the API app will be running ) # Mount the MCP server to the separate app mcp.mount(mcp_app) # Now you can run both apps separately: # uvicorn main:api_app --host api-host --port 8001 # uvicorn main:mcp_app --host mcp-host --port 8000
Connecting to the MCP Server using](https://github.com/nguyendinhsinh361/fastapi-mcp/blob/HEAD/examples)mcp-proxy stdio
If your MCP client does not support SSE, for example Claude Desktop:
Installmcp-proxy, for example:uv tool install mcp-proxy.
Add in Claude Desktop MCP config file (claude_desktop_config.json):
{ "mcpServers": { "my-api-mcp-proxy": { "command": "mcp-proxy", "args": ["http://127.0.0.1:8000/mcp"] } } }
{ "mcpServers": { "my-api-mcp-proxy": { "command": "/Full/Path/To/Your/Executable/mcp-proxy", "args": ["http://127.0.0.1:8000/mcp"] } } }
Find the path to mcp-proxy by running in Terminal:which mcp-proxy.
- Claude Desktop will discover all available tools and resources automatically
Thank you for considering contributing to FastAPI-MCP! We encourage the community to post Issues and Pull Requests.
Before you get started, please see ourContribution Guide.
MIT License. Copyright (c) 2024 Tadata Inc.
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