Flask MCP Server

Example Use Cases

• 1

  A unified HTTP endpoint to perform JSON-RPC calls and receive server-sent events.

• 2

  Role-based access control and authentication via API keys or HMAC.

• 3

  Integrate MCP protocol support into existing Flask applications or run standalone MCP servers.

Description

flask-mcp-server is a Python package that provides a Flask-integrated or standalone server for the Model Context Protocol (MCP). It supports a unified `/mcp` endpoint for JSON-RPC and SSE streaming, includes built-in security features like API key and HMAC authentication, rate limiting, and CORS handling. The server offers extensibility through service providers, role-based access control, TTL caching, and supports multiple transports including HTTP and STDIO. It is designed for easy integration into existing Flask apps or running as a dedicated server with OpenAPI and Swagger documentation.