fastmcp

FastMCP

FastMCP is a high-level, Pythonic framework designed to simplify the creation of Model Context Protocol (MCP) servers and clients. It allows developers to build tools, expose resources, and define prompts with minimal boilerplate code, making it intuitive for Python developers.

Key Features

• Fast Development: High-level interface reduces the amount of code needed, speeding up development.
• Simplicity: Create MCP servers with minimal boilerplate using intuitive decorators.
• Pythonic Design: Designed to feel natural for Python developers, leveraging familiar syntax and patterns.
• Complete Implementation: Aims to provide a full implementation of the core MCP specification for both servers and clients.
• Advanced Features: Includes proxying, composing servers, and generating servers from OpenAPI specs or FastAPI objects.
• Transport Options: Supports various transport protocols for connecting to MCP servers, including SSE, Python stdio, and FastMCP.

Benefits

• Focus on Logic: Developers can concentrate on business logic and data handling without worrying about protocol details.
• Secure Interactions: The MCP protocol allows for secure interactions with LLM applications, maintaining control over sensitive data.
• Modular Architecture: Structure larger applications by creating modular FastMCP servers and mounting them onto a parent server.

Highlights

• FastMCP is part of the official Model Context Protocol Python SDK.
• It supports LLM sampling, allowing servers to request completions from client LLMs securely.
• The framework is open-source, encouraging community contributions and collaboration.