THE BUILDER
Hatch your own.
Pick a style, pick a character, add one detail, leave an email. It is hatched by hand the next morning: base pose, eight animation rows, every frame cut and checked. You get one email with the link and the zip.
FROM THE GALLERY
Three to start with.
LATEST DROPS
One new a day.
Get the drops.
One short email when a new companion lands. Nothing else, unsubscribe in one click.
FAQ
The things people ask.
What does the builder make?
A finished sprite pack: a 1536 x 1872 transparent atlas, 8 columns by 9 rows of 192 x 208 cells, one row per animation state, plus pet.json. It is checked against OpenAI's open-source validator before you can download it.
Where does it work?
Codex (desktop app and CLI) natively, ChatGPT on the web as an upload, and through OpenPets in Claude Code, Cursor, OpenCode and Gemini CLI. Anything that reads the Codex pet format. See the install guide.
How much does it cost?
Nothing. You describe it, we hatch it the next morning and email you the link. Two requests per person per day, plus a site wide daily cap.
Where do the files go?
Unzip the pack into ~/.codex/pets/ on macOS and Linux, or %USERPROFILE%\.codex\pets\ on Windows, then refresh in Codex Settings, Appearance, Pets. The one-line installer on every gallery card does the same.
Who owns what I hatch?
You do. Use it anywhere. If you submit it to the gallery it is shared with your name on it so others can install it too.
Why did a row fail validation?
Usually one row came back with a detached effect or a missing pose. Re-hatch that single row from the result card; the rest is kept.
Do you keep my images?
The base pose is kept on the server for two hours so the animation rows can reference it, then deleted. Frame cutting, atlas composition and validation happen in your browser.