Who Publishes Agent Plugins?
4 of the 6 organisations that authored or steer the Agent Plugins 1.0.0 standard publish no conformant plugin of their own. Verified on 2026-08-09 by fetching every plugin.json we can find on GitHub and checking it against the official schema: 524 distinct Agent Plugins exist across 327 repositories, and only 2 of these 6 ship any of their own. The ecosystem is being built by independent publishers, not by the consortium that wrote the specification.
The standard's authors and stewards
| Publisher | Plugins | Collections | Clients operated |
|---|---|---|---|
| Amazon | 4 | — | Kiro |
| 1 | — | — | |
| Microsoft | 0 | 92 manifests | GitHub Copilot, VS Code |
| Cursor | 0 | — | Cursor |
| OpenAI | 0 | — | ChatGPT, Codex |
| Vercel | 0 | — | — |
Collections are bulk-published manifests collapsed to one entry by our dedupe rules, so a single repository cannot dominate the count; they are excluded from the plugin column. A publisher may also ship in a client-proprietary format, which is not a conformant Agent Plugin and is not counted.
Who actually ships
The ten largest publishers in the verified index by plugin count, on 2026-08-09. These are GitHub owners, ranked by what they have actually published.
- 1sickn3358
- 2netresearch40
- 3777genius26
- 4RDCrystalLab21
- 5HiAi-gg16
- 6gemini-cli-extensions14
- 7chenmiaohero12
- 8novanoticia11
- 9ghchinoy10
- 10mylokaye8
Verified on 2026-08-09