🥷Skills Ninja

Reference Documentation

Quick-access reference material for agent skill authoring. Everything you need to look up while building skills, without the tutorial narrative.

Fields

Frontmatter Reference

Complete table of every YAML frontmatter field — type, required/optional, description, and examples.

Variables

Substitution Variables

Every substitution variable available in skill files — user arguments, positional params, built-ins, and dynamic context.

Quick Ref

Cheatsheet

Single-page quick reference covering file structure, frontmatter, substitutions, tool syntax, locations, and common patterns.