Claude Mods ship in weeks, and you can flip them on now

One hook on * catches every event in Claude Code, including every plugin’s own calls on $, so an audit log fits in one function. Anthropic’s September 9 community update on the claude-code repo showed that demo and gave function hooks a committed timeline: shipping “on the scale of weeks in lieu of days or months”.

Anthropic is calling the feature Claude Mods. A mod is a plugin built on function hooks: TypeScript functions that nest in registration order like Express or Koa middleware, with side effects passed through a parameterized $ object.

Anyone can test with CLAUDE_CODE_ENABLE_FUNCTION_HOOKS=1 claude, and the source listings for the first three built-in mods are public. The catch sits in the timeline itself: the post says “N weeks” and never fills in N.