PrefectHQ/fastmcp

★ 28,388PythonApache-2.090

🚀 The fast, Pythonic way to build MCP servers and clients.

What it is

The Model Context Protocol (MCP) connects LLMs to tools and data. FastMCP is a full MCP application framework for servers, clients, and interactive apps. A server starts with ordinary Python: 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.

When to use it

Reach for fastmcp when you want Claude, Cursor or any MCP client to reach a new tool, API or data source — it's written in Python and fits stacks tagged ai-agents, fastmcp, llm, mcp.

Category: MCP & Tool Use
Also in: —
Stars: 28,388
Forks: 2,579
Last push: today
Created: 2024-11-30
Open issues: 238
Website: gofastmcp.com

#ai-agents #fastmcp #llm #mcp #mcp-clients #mcp-tools #python

Quick start

$ git clone https://github.com/PrefectHQ/fastmcp.git

Hand it to your AI

Read https://ideas.asveas.com/r/PrefectHQ/fastmcp.md and help me add PrefectHQ/fastmcp to my project. Explain the setup steps for my stack and show the minimal code to get it working.

MCP & Tool UseMarkdown .mdOpen on GitHub ↵

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FAQ

What is fastmcp?

PrefectHQ/fastmcp is a MCP server on GitHub: 🚀 The fast, Pythonic way to build MCP servers and clients. The Model Context Protocol (MCP) connects LLMs to tools and data.

When should I use fastmcp?

Reach for fastmcp when you want Claude, Cursor or any MCP client to reach a new tool, API or data source — it's written in Python and fits stacks tagged ai-agents, fastmcp, llm, mcp.

What are the best alternatives to fastmcp?

Popular alternatives in MCP & Tool Use: upstash/context7 (64.6k★), punkpeye/awesome-mcp-servers (97.6k★), modelcontextprotocol/servers (91.9k★), modelcontextprotocol/python-sdk (24.8k★), microsoft/playwright-mcp (39.5k★).

Is fastmcp actively maintained?

PrefectHQ/fastmcp looks very actively maintained: the last push was today (2026-11-11), with 28,388 stars and 238 open issues.

What license does fastmcp use?

PrefectHQ/fastmcp is published under the Apache-2.0 license. Check the repository's LICENSE file before commercial use.