MCP Python SDK

✓ Text source-checked Oct 30, 2026

Official Python SDK for building Model Context Protocol servers and clients.

Source-checked against the vendor's site Oct 30, 2026 · rebuilt from the vendor's own pagesProfile updated Oct 30, 2026Link checked Oct 23, 2026How we rate

Free· Free, MIT-licensed open source.(not source-checked)MCP Servers

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In short

The official Python SDK for building Model Context Protocol servers and clients. It supports stdio, Streamable HTTP, and SSE transports with automatic schema generation.

The MCP Python SDK is a Python implementation of the Model Context Protocol.

The SDK enables the construction of MCP servers that expose tools, resources, and prompts to any MCP host. The SDK enables the construction of MCP clients that connect to any MCP server. The SDK supports the standard transports stdio, Streamable HTTP, and SSE.

The SDK handles JSON Schema generation, request parsing, validation, and protocol handling automatically from type hints. The CLI extra adds the mcp command-line tool with mcp dev, mcp run, and mcp install commands.

The project is licensed under the MIT License.

From the vendor's pages

According to MCP Python SDK: The MCP Python SDK is a Python implementation of the Model Context Protocol. Its pages list this strength: The SDK is the official Python implementation for the Model Context Protocol.

— The AI Tool Bible editorial team

Pros

✅ The SDK is the official Python implementation for the Model Context Protocol.
✅ The SDK supports stdio, Streamable HTTP, and SSE transports.
✅ The package functions as both a server and a full MCP client.

Facts

Pricing: free - Free, MIT-licensed open source. (not source-checked)
API available: Yes
Open source: Yes (license: MIT)
GitHub stars: 24,700 (checked Oct 29, 2026) (not source-checked)
Last GitHub push: Oct 27, 2026 (not source-checked)
First commit: Sep 2024 (not source-checked)
Package downloads (30 d): 235,193,557 · pypi mcp · checked Oct 15, 2026 (not source-checked)

Where this tool sits

MCP Servers MCP frameworks AI custom chatbot builder AI for engineers Open-source AI tools Self-hosted AI tools For Developers Free Forever Has Sdk Open Source Open Source Free Oss License Mit

Use cases

Building MCP servers that expose tools, resources, and promptsBuilding MCP clients that connect to serversLaunching local servers as stdio subprocesses

Frequently asked

How much does the MCP Python SDK cost?: The MCP Python SDK is free. It is an open-source project licensed under the MIT License, allowing you to use it without any licensing fees.
What transports does the SDK support?: The SDK supports standard transports including stdio, Streamable HTTP, and SSE. This flexibility allows you to build servers and clients that connect via various communication methods.
Does the SDK handle protocol logic automatically?: Yes, the SDK automatically handles JSON Schema generation, request parsing, validation, and protocol handling based on your type hints. This reduces the manual work required for protocol compliance.
Is there a command-line tool included?: Yes, the CLI extra adds the mcp command-line tool. It includes commands such as mcp dev, mcp run, and mcp install to help manage your server development and deployment.
Can I use this SDK to build both servers and clients?: Yes, the SDK enables the construction of MCP servers that expose tools, resources, and prompts, as well as MCP clients that connect to any MCP server.