Claude Code Skills
Skills are markdown-based instructions that teach Claude expert patterns. No dependencies. No config. Just drop a folder and go.
What Are Claude Code Skills?
Claude Code Skills are reusable workflow patterns that extend Claude's capabilities. They're stored as simple markdown files in your ~/.claude/skills/ directory.
When you start a Claude Code session, Claude reads these files and instantly becomes an expert in your workflow—whether that's TDD, code review, documentation, or any custom process you define.