How to Create a Codex Skill

Understand the SKILL.md structure and use source-backed examples to create reusable Codex skills.

Start with a SKILL.md

The current ecosystem uses skill folders centered on a SKILL.md file, with optional scripts, references and assets. A practical skill should have a clear name, a concise trigger/description, explicit workflow instructions and only the supporting files it actually needs.

Use source examples

Artifiner indexes both OpenAI-plugin bundled SKILL.md files and community skill repositories, so the catalog can be used to inspect real structures before authoring your own.

Validate before sharing

Check paths, dependencies, installation instructions, and whether the skill should live alone or be bundled inside a broader plugin.

Use this how to create a codex skill guide with the live catalog

Installation and capability behavior can change as repositories evolve. Use this guide to understand the model, then open the relevant entity page and follow its canonical source for the current command, manifest, endpoint or prerequisite. This keeps the editorial explanation useful without turning a static guide into a substitute for upstream documentation.