creating-agent-skills-skill
Installation
SKILL.md
Creating Agent Skills
Use when creating Agent Skills packages (SKILL.md format) for Codex CLI, GitHub Copilot, or Amp - provides the agentskills.io specification with frontmatter constraints, directory structure, and validation rules
Overview
Agent Skills is an open standard for portable AI agent capabilities. One SKILL.md file works across Codex CLI, GitHub Copilot, and Amp.
Official Spec: https://agentskills.io/specification
Installation Directories
| Tool | Location |
|---|---|
| Codex CLI | .agents/skills/{skill-name}/SKILL.md |
| GitHub Copilot | .github/skills/{skill-name}/SKILL.md |
| Amp | .agents/skills/{skill-name}/SKILL.md |