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Codex Pet

Codex Pet is an agent skill (a SKILL.md file) from prime-skills/runcomfy-agent-skills. Codex Pet generator on RunComfy. Build a Codex-compatible Codex Pet spritesheet.webp + pet.json from a single reference image, drop it into ${CODEXHOME:-$HOME/.codex}/pets// and Codex picks it up as. It works with Claude Code and has 60 GitHub stars across a repository of 6 listed skills.

github.com/prime-skills/runcomfy-agent-skills/codex-pet (opens in a new tab)

Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)View on skills.sh (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/prime-skills/runcomfy-agent-skills.git
cp -r runcomfy-agent-skills/codex-pet ~/.claude/skills/codex-pet   # personal, or .claude/skills in a project

In the Claude apps, zip the codex-pet folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/prime-skills/runcomfy-agent-skills.git
cp -r runcomfy-agent-skills/codex-pet .agents/skills/codex-pet   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/prime-skills/runcomfy-agent-skills.git
cp -r runcomfy-agent-skills/codex-pet .cursor/skills/codex-pet   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Codex Pet generator on RunComfy. Build a Codex-compatible Codex Pet spritesheet.webp + pet.json from a single reference image, drop it into ${CODEXHOME:-$HOME/.codex}/pets// and Codex picks it up as a custom Codex Pet next to the 8 built-ins. This skill produces the exact Codex Pet atlas Codex expects (1536x1872 PNG/WebP, 8 cols x 9 rows, 192x208 cells, 9 animation states — idle, running-right, running-left, waving, jumping, failed, waiting, running, review).

When it triggers

  • Triggers on "codex pet", "create codex pet", "make codex pet", "hatch codex pet", "/hatch image", "desktop pet codex", "codex pets", "spritesheet.
  • "codex pet"
  • "create codex pet"
  • "make codex pet"
  • "hatch codex pet"
  • "/hatch image"
  • "desktop pet codex"
  • "codex pets"

More skills in prime-skills/runcomfy-agent-skills

6 skills are listed from this repository.

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FAQ

Codex Pet FAQ

Still curious? Email info@appsgit.com.

How do I install the Codex Pet skill?

Copy the codex-pet folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Codex Pet skill free?

Yes. The repository is open source under the MIT license. The skill mentions an API key or token for an external service, which may need its own account.

Is Codex Pet maintained?

The repository's most recent commit was on May 15, 2026. appsgit only lists skills from repositories with a commit in the last six months.