Agent Skill Index
A community-curated directory of real-world Agent Skills, text files that teach AI assistants such as Claude, Copilot, or Codex new abilities without retraining, compatible with many coding-agent hosts.
Agent Skill Index is a community-curated list of Agent Skills, focusing on real-world skills created and used by actual engineering teams rather than bulk-generated collections. It is aimed at people who have not heard of agent skills before, and is compatible with Claude Code, Codex, Antigravity, Gemini CLI, Cursor, GitHub Copilot, Windsurf, and other hosts.
A skill is a folder containing a required SKILL.md file plus optional scripts, references, and assets, whose YAML frontmatter declares a name and description so an agent can find it before loading its full instructions. Using a skill means picking one from the directory, loading it into an agent through a per-host method such as a slash command, and then describing the task in plain English; no installation or coding is required.