skill-creator
Comprehensive guide for creating modular skills that extend Codex's capabilities with specialized knowledge and workflows.
- Skills consist of a required SKILL.md file with YAML frontmatter (name, description) and optional bundled resources (scripts, references, assets) organized to manage context efficiently
- Follow a six-step creation process: understand concrete usage examples, plan reusable contents, initialize with init_skill.py, edit SKILL.md and resources, package with package_skill.py, and iterate based on real usage
- Keep SKILL.md concise and under 500 lines by using progressive disclosure: metadata always loaded, body loaded on trigger, bundled resources loaded as needed
- Design for appropriate degrees of freedom based on task fragility: high freedom for flexible workflows, medium for patterns with variation, low for fragile operations requiring specific sequences
Skill Creator
This skill provides guidance for creating effective skills.
About Skills
Skills are modular, self-contained packages that extend Codex's capabilities by providing specialized knowledge, workflows, and tools. Think of them as "onboarding guides" for specific domains or tasks—they transform Codex from a general-purpose agent into a specialized agent equipped with procedural knowledge that no model can fully possess.
What Skills Provide
- Specialized workflows - Multi-step procedures for specific domains
- Tool integrations - Instructions for working with specific file formats or APIs
- Domain expertise - Company-specific knowledge, schemas, business logic
- Bundled resources - Scripts, references, and assets for complex and repetitive tasks
Core Principles
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