Claude's Agent Skills let you customize AI for your workflows

Anthropic introduced Agent Skills for Claude Code, allowing developers to define specialized, reusable workflows that Claude can execute on demand. Skills are lightweight plug-ins defined in Markdown files that use progressive disclosure to load only relevant context, minimizing token usage while maintaining domain-specific expertise. The feature supports three scopes (project, personal, and plugin), can execute scripts in sandboxed environments, and works across Claude's ecosystem. Developers highlight the token efficiency achieved through dynamic context-loading as a significant advancement in AI agent customization.