If you want a custom Codex Pet but don't have Codex Pro or access to the built-in `$imagegen`, this skill gives you a clean alternative route through RunComfy's API. It takes a single reference image, makes one GPT Image 2 edit call to generate a canonical chibi pose, then uses ImageMagick to programmatically build all nine animation rows with pixel-perfect micro-transforms. The output is identical to what OpenAI's official `hatch-pet` produces: a 1536x1872 spritesheet and pet.json that drop straight into your `.codex/pets/` folder. You'll need a RunComfy token and ImageMagick installed locally. The whole pipeline runs in about two minutes and costs one image generation call instead of 72.
npx skills add https://github.com/agentspace-so/runcomfy-agent-skills --skill codex-pet