MCP Python SDK

MCP Python SDK is an official Python software development kit to build Model Context Protocol servers and clients.

The MCP Python SDK is the official software development kit for the Model Context Protocol, designed for Python developers. It enables the creation of MCP servers that expose tools, resources, and prompts to any Model Context Protocol host, as well as clients that connect to any server. The SDK supports standard transports including stdio, Streamable HTTP, and Server-Sent Events. It handles protocol details, request parsing, serialization, and validation automatically based on Python type hints and docstrings. Developers can use it to add MCP servers to existing FastAPI or Starlette applications, and it requires Python 3.10 or higher.

MCP Python SDK at a glance

Best for: Software engineer
Runs on: Python, CLI
Pricing: Free
Released: September 2024
Category: AI coding tool
Website: py.sdk.modelcontextprotocol.io

Key features

Build MCP servers exposing tools, resources, and prompts
Build MCP clients connecting to any MCP server
Support stdio, Streamable HTTP, and SSE transports
Generate schemas automatically from Python type hints
Mount MCP servers inside FastAPI or Starlette apps

Use it for

Build an MCP server with Python functions
Connect an MCP client to a server
Expose tools and resources to LLMs
Add MCP support to a FastAPI or Starlette app

Alternatives to MCP Python SDK

FastMCP — The standard framework for building Model Context Protocol servers and clients.
MCP C# SDK — Official C# implementation for the Model Context Protocol.
MCP Java SDK — Official Java implementation with core STDIO, SSE, and Streamable HTTP transports.
MCP TypeScript SDK — Official TypeScript implementation of the Model Context Protocol.
AWS MCP Servers — Provides real-time access to official AWS documentation and infrastructure tools.
MCP Rust SDK — Build official Model Context Protocol servers and clients in Rust.
FastMCP TS — Provides an open-source TypeScript framework for Model Context Protocol servers.
Official MCP Servers — Find trusted official MCP servers without unofficial forks or abandoned projects.
Spec Workflow MCP — It brings sequential spec creation and real-time tracking to your AI workflow.
Coding Tools MCP — Turns any chat app into a coding agent with strict workspace safety boundaries.
MCP Server Finder — It provides a comprehensive directory with detailed profiles and compatibility matrices.
MCPX — Monetize Model Context Protocol servers and build AI agent tools.

All MCP Python SDK alternatives