This is the meta skill for building skills themselves. It walks you through the anatomy of a skill (frontmatter, body, bundled resources), explains the progressive disclosure pattern that keeps context lean, and gives you concrete guidance on when to use scripts versus references versus keeping things in the main file. The core insight here is treating the context window as a public good: challenge every paragraph, default to assuming Claude already knows the basics, and split content aggressively once you hit 500 lines. If you're building skills for your team or contributing to the marketplace, this codifies the patterns that keep skills from bloating everyone's context.
npx -y skills add base/skills --skill skill-creator --agent claude-codeInstalls into .claude/skills of the current project.
Select a file.
anthropics/skills
obra/superpowers
github/awesome-copilot