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fastmcp

fastmcp

Active·★ 25.4k·Apache-2.0·Updated 2026-05-27

★ Most Popular★ Dev Tooling★ LLM Infra

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

FastMCP is a standard framework for building Model Context Protocol (MCP) applications, which connect LLMs to tools and data. It simplifies the process by automatically generating schemas, validation, and documentation for tools, and managing transport negotiation and authentication for server connections. FastMCP offers a comprehensive solution for developing, deploying, and scaling MCP-powered systems.

#agents#fastmcp#llms#mcp#mcp-clients#mcp-servers#mcp-tools#model-context-protocol

$ Install

$ uv pip install fastmcp

↗ Visit site ★ GitHub

01

Features

01Automatic schema, validation, and documentation generation for tools

02Managed transport negotiation, authentication, and protocol lifecycle for server connections

03Wraps Python functions into MCP-compliant tools, resources, and prompts (Servers)

04Connects to any MCP server with full protocol support (Clients)

05Provides interactive UIs for tools rendered directly in conversations (Apps)

02

Compatibility

Python

Python Library

Verified via docs

03

Quick start

1

$ uv pip install fastmcp

04

Use cases

↳Building LLM applications that interact with custom tools and data sources

↳Creating interactive conversational UIs for backend functionalities

↳Developing and deploying scalable MCP servers and clients

05

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AI-powered web scraping and structured data extraction. CLI + MCP server + Claude Code plugin for the Thunderbit Open API.

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fastmcp Alternatives Best Dev Tooling Tools 2026 Open Source Dev Tooling fastmcp Tutorial fastmcp Vs Competitors agents fastmcp llms

Comments

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S
Sam KimMay 23, 2026
Prefect team's FastMCP implementation is fast and Pythonic — exactly what it says.
D
Drew HarrisMay 13, 2026
Client and server in one package covers the full protocol development workflow.
S
Scout JacksonApr 22, 2026
Good for teams already using Prefect who want native MCP server capabilities.
A
Alex DavisFeb 27, 2026
Decorator-based tool definition is the right API design for Python developers.

On this page

01Features 02Compatibility 03Quick start 04Use cases 05Alternatives

Stats

GitHub Stars★ 25.4k

Last commit3d ago

StatusActive

LicenseApache-2.0

CategoryDev Tooling

Trend (30d)

+1k↑ 4.5%

Links

Documentation↗Discussion↗Issues↗Releases↗

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