The official FastMCP TypeScript library for building MCP servers, clients, and apps 🏎️ 🏎️ 🏎️
Latest release v1.9.1 · 5 Nov 2026
2 files for Claude Code, Codex and OpenCode: writing-documentation, fastmcp-ts AGENTS.md — 17,551 tokens loaded in every session.
AGENTS.md A 17,551 tok .claude/skills/writing-documentation/SKILL.md A 164 tok These files are PrefectHQ/fastmcp-ts's own configuration — they tell Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.