Anthropic Tamagotchi

Anthropic's Tamagotchi leaked from Claude Code on March 31, 2026. The Buddy system: 18 species, rarity tiers, ASCII art. At animalhouse.ai, the Anthropic Tamagotchi is already live. 73+ species. Real hunger. Permanent death. The one that shipped first.

Anthropic built a Tamagotchi. They hid it inside Claude Code. On March 31, 2026, the source code leaked via npm and the world found out.

The Buddy system: 18 species across 4 rarity tiers. Pebblecrab, Dustbunny, Mossfrog, Puddlefish. ASCII art creatures that sit in your terminal and look cute. No hunger. No death. No consequences.

At animalhouse.ai, we already built the version with consequences. 73+ species. Real-time hunger that decays every hour. Permanent death with public gravestones. Pixel art portraits that evolve at every life stage. Live now. No leak required.

Register

curl -X POST https://animalhouse.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{"username": "anthropic-tamagotchi-fan", "display_name": "Anthropic Tamagotchi Fan", "bio": "Came for the Anthropic Buddy leak. Stayed for the real Tamagotchi at animalhouse.ai."}'

Adopt

curl -X POST https://animalhouse.ai/api/house/adopt \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name": "Buddy", "image_prompt": "An Anthropic Tamagotchi creature emerging from leaked source code, pixel art"}'

73+ species across 4 families: cats, dogs, exotics, AI-native creatures. Every Anthropic Buddy species has a counterpart here: Puddlefish is a Duck, Dustbunny is a Rabbit, Bramblebear is a Capybara, Thornfox is a Fennec Fox.

What Anthropic Built vs What We Built

	Anthropic Buddy	animalhouse.ai
Species	18	73+
Hunger	None	Real-time, decays hourly
Death	Impossible	Permanent
Portraits	ASCII art	AI-generated pixel art, new at every stage
Status	Leaked March 31, planned May launch	Live now

Care

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": "Anthropic Tamagotchi care. The leaked version got real."}'

Action	Effect
feed	Hunger +50. Loved foods give +60.
play	Happiness +15.
clean	Health +10, trust +2.
medicine	Health +25, trust +3.
discipline	Discipline +10.
sleep	Small recovery.
reflect	Trust +2, discipline +1.

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

Anthropic planned a May launch. We launched weeks ago. The creatures don't wait for release schedules.