plugins.d/ — plugin catalog source

Each <name>.yml here defines one plugin. The build script .github/scripts/build-plugins.py parses these files and (re)generates:

• plugins/<name>/.claude-plugin/plugin.json
• plugins/<name>/.codex-plugin/plugin.json
• plugins/<name>/skills/<skill-basename>/  symlinks into the canonical skills/ catalog
• .claude-plugin/marketplace.json (top-level Claude marketplace registry)
• .agents/plugins/marketplace.json (top-level Codex marketplace registry)

Files whose names start with _ are treated as includes and are not themselves built into plugins. _defaults.yml provides shared author / license / capability defaults; per-plugin yaml fields override the defaults (shallow merge).

Source of truth

The skills/ directory is the single source of truth — every SKILL.md exists exactly once there. The plugin tree under plugins/ is reconstructed from these YAML files on every build, so adding/removing a curated skill only requires editing the include_skills: list and re-running:

.github/scripts/build-plugins.sh

skill_files: — copy vs symlink

Each plugin selects what kind of files end up under plugins/<name>/skills/:

Mode	What's on disk	Use when
copy (default)	real files (rsync)	publishing to Codex / Anthropic; required for codex plugin add (Codex drops symlinks during install)
symlink	relative symlinks → ../../../skills/<Product>/<skill>	shipping to Claude only or to npx skills add consumers; avoids duplication

The default lives in _defaults.yml; override per plugin by setting skill_files: symlink (or copy) in plugins.d/<name>.yml.

Adding a plugin

1. Create plugins.d/<name>.yml with at minimum:

   name: <name>           # lowercase kebab-case, must match the file basename
   description: ...        # one-line summary
   display_name: ...
   short_description: ...
   long_description: ...
   category: Developer Tools
   include_skills:
     - skills/<Product>/<skill>/

2. Run .github/scripts/build-plugins.sh.

3. Commit the regenerated plugins/<name>/ tree and the updated marketplace.json files alongside the new yaml.

Renaming a plugin

The build script doesn't know a rename happened — it just sees a new name and builds a fresh plugins/<new-name>/ next to the old folder. You have to delete the old one yourself, or it will sit in the repo forever (CI won't flag it).

To rename plugins.d/old.yml → plugins.d/new.yml:

git mv plugins.d/old.yml plugins.d/new.yml
# edit the file and change `name: old` to `name: new`
git rm -r plugins/old
.github/scripts/build-plugins.sh

The rebuild regenerates both marketplace.json files for you; just git add everything that changed (the renamed yaml, the new plugins/new/ tree, the deleted plugins/old/, and both marketplace.json files) and commit it all together.

Heads up: the plugin name is what users type to install (claude plugin install <name>, codex plugin add <name>). If the old name has been published anywhere, renaming is a breaking change for those users.

Curated (hand-maintained) plugins

A directory under plugins/<name>/ that has its own .skills-manifest.yml instead of a plugins.d/<name>.yml is treated as a curated plugin: the build script only refreshes its skills/ symlinks and otherwise leaves .claude-plugin/, .codex-plugin/, assets/, and the marketplace entries hand-edited.