A skill teaches an assistant how to do a specific job: edit a draft into plain English, write valid structured data, turn a git history into release notes. Anthropic calls them Agent Skills, and they work in Claude Code, the Claude apps and the Claude API.
Unlike a long prompt you paste every time, a skill is installed once. Claude keeps a one line summary of each skill in mind and only reads the full instructions when a task calls for them, so you can install many without slowing anything down.
- Skills listed here
- 5
- Categories
- 3
- Free to install
- 5
What is inside a skill
A skill is just a folder. The only file it must have is SKILL.md; everything else is optional.
your-skill/
- SKILL.mdname, description and the instructions
- references/longer material Claude reads only when needed
- style-guide.mdtone, vocabulary, examples
