Claude Code Plugin Reference (night-market edition)

This is the domain pack for how Claude Code plugin machinery works in this repository. It covers manifests, skills, commands, agents, hooks, and the marketplace registry, with the local conventions layered on top. Every contract below was checked against a shipped plugin (mostly plugins/imbue, plugins/abstract, and plugins/herald) on 2026-07-02 at repo v1.9.15. When another night-market skill says "see the plugin reference for what a hook payload is," this is the file it means.

Vocabulary

Each term is defined once here and used without redefinition below.