FastMCP

FastMCP OpenAPI and FastAPI Integration

FastMCP can generate an MCP server directly from an existing OpenAPI 3.x description or a FastAPI application, turning every HTTP operation into an MCP tool with auto-generated schemas and validation. This makes FastMCP a one-step path from any existing REST API to an agent-callable MCP surface, and is the recommended route for retrofitting MCP onto established services without rewriting business logic.

GitHub

Documentation

📖
Documentation
https://gofastmcp.com/integrations/openapi
📖
Documentation
https://gofastmcp.com/integrations/fastapi

API entry from apis.yml

apis.yml Raw ↑ 
aid: fastmcp:fastmcp-openapi
name: FastMCP OpenAPI and FastAPI Integration
description: FastMCP can generate an MCP server directly from an existing OpenAPI 3.x description or a
  FastAPI application, turning every HTTP operation into an MCP tool with auto-generated schemas and validation.
  This makes FastMCP a one-step path from any existing REST API to an agent-callable MCP surface, and
  is the recommended route for retrofitting MCP onto established services without rewriting business logic.
humanURL: https://gofastmcp.com/integrations/openapi
baseURL: ''
tags:
- MCP
- OpenAPI
- FastAPI
- REST
- Integration
properties:
- type: Documentation
  name: OpenAPI Integration
  url: https://gofastmcp.com/integrations/openapi
- type: Documentation
  name: FastAPI Integration
  url: https://gofastmcp.com/integrations/fastapi