The fast, Pythonic way to build MCP servers and clients.
Building custom MCP servers and clients in Python quickly.
You want a ready-made server — this is the toolkit for building one.
About fastmcp #
The Model Context Protocol (MCP) connects LLMs to tools and data. FastMCP gives you everything you need to go from prototype to production:
Building an effective MCP application is harder than it looks. FastMCP handles all of it. Declare a tool with a Python function, and the schema, validation, and documentation are generated automatically. Connect to a server with a URL, and transport negotiation, authentication, and protocol lifecycle are managed for you. You focus on your logic, and the MCP part just works: with FastMCP, best practices are built in.
That's why FastMCP is the standard framework for working with MCP. FastMCP 1.0 was incorporated into the official MCP Python SDK in 2024. Today, the actively maintained standalone project is downloaded a million times a day, and some version of FastMCP powers 70% of MCP servers across all languages.
fastmcp is listed in this index written primarily in Python, with 28k stars on GitHub. Its latest recorded repository push was in October 2026; that is not an ASE editorial review date.
uv pip install fastmcp
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fastmcp and related category tools #
| Record | Stars | Pricing | ||
|---|---|---|---|---|
| fastmcpthis listing | 28k | Python | Apache-2.0 | Costs not checked |
| MCP Python SDK (official) | 25k | Python | MIT | Costs not checked |