The MCP Python SDK is the official toolkit for building Model Context Protocol servers and clients in Python. It leverages Python's asyncio for efficient handling of concurrent connections and long-running operations, making it well-suited for MCP servers that need to interact with databases, APIs, or other I/O-heavy services. The SDK provides decorators and type annotations for defining tools, resources, and prompts in a Pythonic way.
Developers use the SDK to create everything from simple utility servers (file operations, web search) to complex integrations with data science tools, cloud platforms, and enterprise systems. The SDK handles protocol compliance, transport management, and capability advertising automatically, ensuring that any server built with it works correctly across Claude Desktop, Cursor, VS Code, and other MCP-compatible clients. Standard transports including stdio and HTTP are fully supported.
With 22,400+ GitHub stars — nearly double the TypeScript SDK — the Python SDK reflects the strong demand for MCP servers in Python-centric development environments, particularly data science, ML engineering, and backend development. It's the backbone of many of the most popular community MCP servers and the recommended starting point for Python developers entering the MCP ecosystem.