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fastmcp

AI Coding Tools

A Python framework that simplifies building Model Context Protocol (MCP) servers, clients, and interactive apps.

Python Latest v3.4.4 · 18d ago Security brief →

Features

  • Automatically generates schemas, validation, and documentation for MCP tools from Python functions
  • Provides server components to expose tools, resources, and prompts to LLMs
  • Offers client libraries and CLI utilities for connecting to any MCP server

Recent releases

View all 22 releases →
Config change
v3.4.4 Mixed
Auth Breaking upgrade

HTTP compatibility + HF auth + docs

Review required
v3.4.3 Mixed
Auth RCE / SSRF

SSRF/OAuth hardening + proxy race fix

Config change
v3.4.2 New feature
Auth

Private JWT header support

Upgrade now
v3.4.1 Breaking risk
Dependencies

Starlette floor + OAuthProxy logging

Review required
v3.4.0 Breaking risk
Auth Breaking upgrade

fastmcp-remote + proxy failure handling + auth token lifespan

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About

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Install & Platforms

Install via
pip

Community & Support

Beta — feedback welcome: [email protected]