Section C: Extension Mechanisms

Skills

Model-invoked capabilities that Claude uses autonomously

How Skills Work
SKILL.md files: markdown files with instructions and descriptions
Claude decides when to use them based on context
Reusable across projects and conversations
Community skills ↗ available online
Recommended for spec-driven development
Brainstorm Write Plan Execute Plan
The Superpowers skill guides you through a structured workflow for building features. Claude helps you think through requirements, create a detailed plan, then implements it systematically.
DEMO: Install Superpowers skill