Python SDK MCP Server
Build MCP-compliant servers and clients using a high-performance Python framework.
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Overview
The Python SDK for the Model Context Protocol (MCP) provides the essential tools to develop servers that expose functionality and data to LLM applications. It supports both server and client development, enabling standardized interactions across stdio, Streamable HTTP, and SSE transports. Version 2 represents a major architectural overhaul, introducing breaking changes designed to align with the latest MCP specification. The package includes a command-line interface for development and execution, requiring Python 3.10 or higher for full compatibility.
Our verdict
This repository carries a high risk level with a security score of 53/100. Because it is community-maintained rather than official and lacks an independent editorial review, developers must be cautious when integrating this into sensitive environments. It is best suited for developers actively building against the MCP spec who are comfortable managing their own security dependency audit.
- Zero direct dependencies minimize the supply-chain attack surface
- Extensive community reach with over 23,000 GitHub stars
- Active maintenance with daily code commits
- Comprehensive documentation covering v2 migration and API references
- Not an official vendor-maintained package
- Authentication and OAuth mechanisms remain unreviewed
- Read-only operational security has not been formally verified
Compatibility
| Client | Local | Docker | Remote | Read-only |
|---|---|---|---|---|
| Claude Desktop | ||||
| Cursor | ||||
| VS Code | ||||
| Windsurf | ||||
| ChatGPT |
Frequently asked questions
›What are the minimum system requirements for the MCP Python SDK?
The SDK requires Python 3.10 or newer.
›Does this SDK support all MCP communication transports?
Yes, this SDK supports all standard transports, including stdio, Streamable HTTP, and SSE.
›How do I install the SDK with the command-line interface tools?
You can install the tools by running 'uv add "mcp[cli]"' or 'pip install "mcp[cli]"'.
›I am currently using v1.x of the SDK. Do I need to make changes to upgrade?
Yes, v2 is a major rework with breaking changes. You should review the migration guide provided in the documentation before upgrading.
›Can I continue using v1.x if I am not ready to migrate?
Yes, v1.x remains available on the v1.x branch and will continue to receive critical bug fixes and security patches. Ensure you set a version bound of '<2' in your requirements to avoid accidentally installing v2.
Changelog
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