FastMCP 3.0

What it does

FastMCP 3.0 is a framework for building smarter AI context apps, not just tool servers. Pull tools and data from anywhere, reshape them, control access, track state, and run long tasks — with hot reload, versioning, and observability built in for production use.

FastMCP is the standard framework for building Model Context Protocol (MCP) servers, clients, and interactive applications.

Use this file to discover all available pages before exploring further. FastMCP 4 is here — built for the new MCP protocol. See what's new . FastMCP is the standard framework for building Model Context Protocol (MCP) servers, clients, and interactivefrom gofastmcp.com

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  Hi HN -- Since Anthropic announced the Model Context Protocol (MCP) last week [1], I've been excited about giving Claude new capabilities through my custom servers. But while MCP is powerful, implementing the protocol correctly requires a lot of low-level boilerplate code. I found myself wanting something like FastAPI - a high-level framework that would let me focus on building features, not servers. After some hacking, I'm sharing FastMCP: a Pythonic framework for building MCP servers. FastMCP uses decorators to transform normal functions into MCP tools, resources, templates, and prompts,…

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