FastMCP 4.2 Ships Skills Over MCP, Pairing Tools With Usage Guidance
jlowin123 · reddit · 2026-11-14
FastMCP 4.2 adds support for serving agent skills over MCP, letting servers provide not just tools but also guidance on how to use them. Authors can serve an existing SKILL.md with supporting files, share an entire skills directory, or define skills in Python and generate them dynamically. Example: a deployment platform exposing log-reading and rollback tools alongside the team's failed-rollout investigation procedure. The feature is experimental and host support is still early, so users should verify client compatibility.
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