Claude Code skills

Modular, self-contained packages that transform Claude into a specialized agent: they automate complex, multi-step workflows using proven instructions and code, dynamically loading only what is needed.

Claude Code Skills are your solution for high-efficiency, specialized automation. They function as modular, self-contained packages (e.g., `SKILL.md` files) that encode domain expertise and organizational knowledge. Claude dynamically discovers and loads these resources based on context (progressive disclosure), which minimizes token usage and maximizes speed. This system allows you to execute complex, multi-step workflows—like full code review or PDF processing—with a single command, consistently applying best practices across all your projects. Skills specialize Claude: you create the expert workflow once; Claude applies it everywhere.

https://docs.anthropic.com/claude/docs/skills-overview