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FastMCP 3.0 is out! I don't even know how to fit it in a post... 🔌 Build servers from directories, APIs, remote servers — anything 🎭 Per-session context & progressive disclosure 🖥️ Full CLI: list, call, generate clients 🔐 Versioning, granular auth, OTEL ⚡️ DX galore

Most of the work went into rearchitecting the framework to be production-ready for where MCP is going in 2026. But if we did our job right, you shouldn't be able to tell. You'll just notice everything works *better*. www.jlowin.dev/blog/fastmcp...

You already know this was our biggest release ever, but during its month-long beta, FastMCP 3 attracted 21 first-time contributors and over 100K opt-in installs. The paint is still wet on the overhauled docs and upgrade guides (just ask your LLM!) gofastmcp.com/getting-star...

FastMCP is downloaded over a million times a day. We regret that some of you are about to be surprised by an unexpected upgrade. If it causes any issue, we're sorry. The upgrade guides will help, and if something's broken, please open an issue: github.com/prefecthq/fa...