Pre-hatched · Drop-in for /pet · Open catalog
Skip the hatch.
We did it for you.
A curated catalog of pixel companions for Codex — already generated, already aligned, already a little unhinged. Drop one into ~/.codex/pets/, call /pet, skip the hatch-pet ritual entirely.
Live in the overlay
Your pet talks while Codex works.
Codex's floating overlay shows your pet alongside the active thread state — running, waiting, ready for review. Built-in pets are wholesome about it. HATCH pets aren't.
Wojak · Bagholding
Holding through the dip. We are not selling.
/pet · codex
Built-in tone
Moo Deng
“The build is warming up. I am keeping an eye on the sparks.”
Trenches tone
Wojak
“Liquidity yanked. Trying to remember why I was bullish.”
The catalog
12 pets. Pick your fighter.
8×9 atlas · 9 states each · ~250KB per pet
Install in 30 seconds
Hatched. Packaged. Drop-in ready.
Codex looks for pets in ~/.codex/pets/. HATCH pets ship pre-built for that folder — manifest, spritesheet, frame counts, all generated. One curl, then /pet.
Pick a pet
Browse the catalog above. Each ships as a 1536×1872 spritesheet with 9 animation states tuned to the timeline — bagholding, aping in, GM, rugged, sending it, DD.
Curl the package
One command pulls pet.json + spritesheet.webp into ~/.codex/pets/<id>/ — the same folder Codex's official pets live in. Already hatched. No skill-installer needed.
/pet, then Cmd+K
In Codex, run /pet to wake the overlay. If your pet isn't visible yet, hit Cmd+K → Force Reload Skills, or refresh from Settings > Appearance > Pets. Then cope.
The 9 states
Every emotion, mapped to the chart.
Codex pets are status indicators. The overlay reflects whether your agent is running, waiting for input, or ready for review. Built-in pets say things like “the build is warming up.” HATCH pets say what you'd say.
Why
OpenAI gave you hatch-pet. We gave you the pets.
The official Codex pets are wholesome. A loaf of bread. A loose thread. The build is warming up. I am keeping an eye on the sparks. Cute, soft, family-friendly. We needed something else.
HATCH is a curated catalog of pre-built Codex pets with the edges left in. Same 8×9 atlas Codex expects, same ~/.codex/pets/ folder, same /pet command. Just a different soul.
Open format, drop-in install, no hatch-pet ritual required. Submit your own. Fork the catalog. The mascot of your terminal finally has nine emotions worth feeling.