Minimum manifest
{
"id": "example-pet",
"displayName": "Example Pet",
"description": "A custom Codex pet.",
"spritesheetPath": "spritesheet.webp"
}Codex pets guide
pet.json Format for Codex Pets
The pet.json file tells Codex what the custom pet is called and which spritesheet file should be used for animation.
Search-friendly names
Public gallery pages should use readable pet names and descriptions so Google can connect the preview image, manifest, and install intent.
CodingPets.dev is an independent custom Codex pets generator and gallery. It is not affiliated with OpenAI.