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Introduction to agent skills

Introduction to agent skills shows how to teach Claude Code something once, in a SKILL.md file it reads when a request matches, instead of pasting the same guidance into every prompt.

Open at Anthropic ↗Common questions

Who it suits

  • Claude Code users who keep repeating the same instructions.
  • Teams that want Claude to follow their standards consistently.

What it covers

  • What skills are, where they live, and how Claude Code matches them to requests.
  • Creating a skill with valid SKILL.md frontmatter and checking that it loads.
  • Writing effective descriptions and restricting tools with allowed-tools.
  • Organising larger skills with progressive disclosure, reference files and scripts.
  • Choosing between skills, CLAUDE.md, subagents, hooks and MCP servers, and sharing and debugging skills.

Common questions about Introduction to agent skills

What is an agent skill?
Anthropic describes a skill as guidance you write down once in a place Claude Code reads automatically when a request matches.
How long is the course?
Anthropic lists 6 lessons.
How do skills differ from CLAUDE.md?
The course covers choosing between skills, CLAUDE.md, subagents, hooks and MCP servers for a given use case.

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Where this comes from

Written from Anthropic’s own pages, read on 2026-10-13. Content, prices and availability change, so the provider’s page is the source. We are not affiliated with Anthropic and this is not an endorsement.