Claude Code Skills enable AI agents to guide users without full system access

Claude Code Skills are modular packages that extend AI agent capabilities without modifying core code. They include instructions, metadata, and optional scripts activated only when a user request matches their description. The open-source project 'big-arrow-on-the-screen' demonstrates a skill that draws a large arrow on macOS windows to guide user actions. This approach allows agents to handle tasks requiring human interaction, like system permission dialogs, by indicating where to act rather than acting autonomously. Skills employ progressive disclosure, keeping only names and descriptions in memory until specifically needed.