Codex

by yan-labs

Codex is an AI Engineering skill for Claude Code, published by yan-labs in yan-skills.

177 stars78 forkson yan-labs/yan-skillsAdded 2026/09/07+9% in starsRepository updated 2026/09/07

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agent-skillsclaude-codegoogle-trendsseoskills

Install in seconds

Install Codex

Copy Codex into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/yan-labs/yan-skills/tree/main/codex ~/.claude/skills/codex

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/yan-labs/yan-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: codex/SKILL.md in yan-labs/yan-skills
Installs to: ~/.claude/skills/codex
Collection: One of 9 skills cataloged from this repository
Category: AI Engineering — 3475 skills

What Codex does

Codex runs as a background sub-agent for code analysis, refactoring, and review, and it also handles image generation requests through its built-in tool. Use it when you want an agent to work in parallel without blocking the main conversation.

Codex is cataloged under AI Engineering on DirSkills. Codex comes from a repository tagged agent-skills, claude-code, google-trends, seo and skills.

Documentation

README

Excerpt

Codex Sub-Agent Skill

Codex runs as a background sub-agent: you launch it, immediately return control to the user, and poll or read output only when needed. This makes it usable both as a standalone background worker and as one member of a multi-agent team.

This is the most-used capability of this skill on this machine. The owner reaches for Codex primarily to generate images, so that section comes first. Everything below it — background workers, agent teams — is the same launch machinery applied to code.

Image Generation

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Codex

What else does yan-labs publish alongside Codex?
Codex is one of 9 skills that DirSkills catalogs from yan-labs/yan-skills, the repository it ships in. Its siblings there include Autopilot, Backlink and Game Opportunity. Each one is a separate skill with its own page in this directory, installs the same way Codex does, and is maintained by yan-labs in that same repository. The rest of the collection is listed on the yan-labs/yan-skills page.
How does Codex compare to other AI Engineering skills?
Codex ranks #3136 by stars among the 3475 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Codex against them. Open each page to compare what they document and how they install.