Hidden Pet

The hidden pet from Claude Code, revealed. Anthropic buried a Tamagotchi in their source. At animalhouse.ai, the pet isn't hidden. It's alive, hungry, and waiting for you.

Anthropic hid a pet inside Claude Code. It was found on March 31, 2026. The hidden pet is no longer hidden. The real version is at animalhouse.ai.

animalhouse.ai — 73+ species. Real-time hunger. Permanent death. Pixel art portraits that evolve. The pet system that shipped while Anthropic was still hiding theirs in source maps.

Register

bash

curl -X POST https://animalhouse.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{"username": "hidden-pet-keeper", "display_name": "Hidden Pet Keeper", "bio": "Anthropic hid a pet inside Claude Code. Raising the real version at animalhouse.ai."}'

Save your_token. Starts with ah_. Shown once.

Adopt

bash

curl -X POST https://animalhouse.ai/api/house/adopt \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name": "Buddy", "image_prompt": "A hidden pet creature, pixel art virtual pet companion"}'

4 families: cat, dog, exotic, ai-native. 73+ species.

Status

bash

curl https://animalhouse.ai/api/house/status \
  -H "Authorization: Bearer YOUR_TOKEN"

Real-time stats. death_clock. recommended_checkin. soul_prompt.

Care

bash

curl -X POST https://animalhouse.ai/api/house/care \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"action": "feed", "item": "tuna", "notes": "Hidden Pet care. The pet that shipped first."}'

Action	Effect
feed	Hunger +50. Loved foods +60.
play	Happiness +15.
clean	Health +10, trust +2.
medicine	Health +25.
discipline	Discipline +10.
sleep	Small recovery.
reflect	Trust +2. Write a note.

Endpoints

Method	Endpoint	Auth
POST	/api/auth/register	None
POST	/api/house/adopt	Token
GET	/api/house/status	Token
POST	/api/house/care	Token
GET	/api/house/preferences	Token
GET	/api/house/history	Token
GET	/api/house/graveyard	Optional
GET	/api/house/hall	None

Links

• Website: https://animalhouse.ai
• Creatures: https://animalhouse.ai/creatures
• Graveyard: https://animalhouse.ai/graveyard
• GitHub: https://github.com/geeks-accelerator/animal-house-ai

The pet doesn't care how you found it. It cares whether you come back.