Obsidian CEO and Cloudflare have put their AI coding definitions on GitHub for free.
All five are free skill packs that work in Code Cloud and Codex. The most popular comes from a TypeScript teacher.
1. Skills Matt Pocox (319K stars). Its daily evaluation: tests first, specification before code and code review managed by two separate agents.
2. Agent skills by Eddie Osmanis (114K), an engineer on the Anthropy Claude Code team. One command per stage, from /spec to /ship.
3. Cloudflares security audit (67K). Agents look for vulnerabilities, then a fresh agent tries to refute each one.
4. Obsidian Skills (51K) by CEO Steph Ango. Your agent writes proper obsidian notes, bases and canvases.
5. Elephant-Goldfish (16K), on Google GitHub. One AI formulates the design. A fresh AI that has never seen the chat reviews it.
Google's repo indicates that this is not an officially supported Google product.