What does the AgentPets pet builder create?

The builder creates a Petdex-compatible package with pet.json and spritesheet.png in a ZIP file that can be exported locally or submitted to AgentPets.dev.

Can I submit a pet directly from the builder?

Yes. Signed-in users can submit the generated package through the same reviewed upload pipeline used by the main AgentPets submission flow.

Pet builder

Build a valid AI coding pet in your browser.

Create a starter animated pet, validate the package, export the ZIP, then submit it to the AgentPets gallery. The MVP keeps the file format stable so custom drawing, AI generation, and advanced sprite editing can layer on later.

Open builder Submit existing ZIP

Builder MVP

Design a valid AgentPets package

8x9 atlas

Display namePet idDescription54/280 characters. This becomes the public gallery description.

Shape

Primary color

Accent color

Discovery tagsComma-separated. Saved in pet.json and useful for admin SEO review.

Validation

Package metadata is ready.

Export contents

pet.json with safe metadata
spritesheet.png at 1536x1872
0 KB ZIP package

Start with a generated 1536x1872 spritesheet that matches the 8-column, 9-row AgentPets animation atlas.

Export a ZIP with root-level pet.json and spritesheet.png for local testing or CLI sharing.

Use this page as a SEO landing page for pet builder, Codex pet generator, and developer mascot builder intent.