Summary
If you're building Agent Skills packages for Codex CLI, GitHub Copilot, or Amp, this gives you the complete agentskills.io specification in one reference. It covers the frontmatter schema (name validation rules, required vs optional fields), directory structure conventions, and the progressive disclosure model that keeps skills under 500 lines for efficient context loading. The cross-tool compatibility section is handy since the same SKILL.md works everywhere, you just move it between .agents/skills and .github/skills. Honestly feels like documentation that should live in your editor when you're authoring skills instead of hunting through the spec site.
Install to Claude Code
npx -y skills add agentworkforce/relay --skill creating-agent-skills-skill --agent claude-codeInstalls into .claude/skills of the current project.
An agent that runs the SEO playbooks that move rankings and ships PRs you control.
Get founding access →
Connect Claude to +800M contacts, +150M companies. Find & Enrich leads in chat.
Try For Free →
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Files
SKILL.md
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Featured
An agent that runs the SEO playbooks that move rankings and ships PRs you control.
Get founding access →Connect Claude to +800M contacts, +150M companies. Find & Enrich leads in chat.
Try For Free →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
