gh skill
A command built into GitHub CLI (v2.90+, in preview), with no extension to install, to install, preview, and update AI agent skills from any GitHub repo: `gh skill install OWNER/REPO SKILL --agent claude-code --scope user`. Portable cross-tool standard (Claude Code, Cursor, Codex, Gemini CLI, Antigravity, Copilot). Public preview launched 2026-04-16.
Strengths
- Portable cross-tool standard (Claude Code, Cursor, Codex, Gemini CLI, Copilot)
- 1000+ skills indexed in the Agent Skills format already available
- Provenance metadata in SKILL.md frontmatter (repo + ref + tree SHA)
- `gh skill preview` lets you inspect before installing
Limitations
- Still in public preview, behavior may change before GA
- Requires GitHub CLI v2.90+, clients on older versions must upgrade
Best for
- Devs maintaining a personal skill library
- Teams sharing internal skills via private GitHub repo