skill-creator

To create a Codex skill, you run the included initializer to scaffold a structured skeleton in your repository, then customize the template SKILL.md and add resources like scripts or references as needed.

The required structure for a Codex skill includes a SKILL.md file with mandatory YAML frontmatter defining the name and description, alongside auto-generated agents/openai.yaml and optional resource directories.

Yes, you need YAML frontmatter for Codex skill creation because the template enforces mandatory name and description fields to ensure consistent metadata and proper skill discovery.

Yes, you can update existing skills using this scaffolding tool, as it applies to updating existing units and enforcing consistent metadata, auto-generating agents/openai.yaml, and scaffolding new resources.

The best way to enforce consistent metadata across multiple Codex skills is using a bootstrap process that provides reusable templates and validation to ensure frontmatter name and description fields exist.

Your Codex skill needs an agents/openai.yaml file because the scaffolding process auto-generates it to encapsulate best practices for skill structure, validation, and iterative improvement during onboarding.