# Sources

| Topic | URL | Used for |
|-------|-----|----------|
| Agent Skills spec | https://agentskills.io/ | SKILL.md format |
| Skill Steward STANDARDS | https://github.com/arenukvern/skill_steward/blob/main/docs/STANDARDS.mdx | Repo conventions |
| Codex plugins | https://developers.openai.com/codex/plugins/build | Codex manifest, marketplace, hooks, cache behavior |
| Codex skills | https://developers.openai.com/codex/skills | Codex skill locations and distribution boundary |
| Open Plugin spec | https://github.com/vercel-labs/open-plugin-spec | Vendor-neutral `.plugin/plugin.json` baseline |
| Cursor skills | https://cursor.com/docs/skills.md | Cursor skill paths, fields, migration |
| Cursor plugins | https://cursor.com/docs/plugins.md | Cursor `.cursor-plugin` layout and team marketplaces |
| Zed skills | https://zed.dev/docs/ai/skills | Zed skill paths, trust, flat layout, limitations |
| Vercel skills CLI | https://github.com/vercel-labs/skills | Agent install flags and path matrix |

## Changelog

- 2026-05-29: initial
- 2026-06-05: refreshed Codex, Cursor, Zed, Open Plugin, and skills CLI marketplace references
