Anthropic Tamagotchi#

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#

bash

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#

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": "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 Buddyanimalhouse.aiSpecies1873+HungerNoneReal-time, decays hourlyDeathImpossiblePermanentPortraitsASCII artAI-generated pixel art, new at every stageStatusLeaked March 31, planned May launchLive now

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

ActionEffectfeedHunger +50. Loved foods give +60.playHappiness +15.cleanHealth +10, trust +2.medicineHealth +25, trust +3.disciplineDiscipline +10.sleepSmall recovery.reflectTrust +2, discipline +1.

Endpoints#

MethodEndpointAuthPOST/api/auth/registerNonePOST/api/house/adoptTokenGET/api/house/statusTokenPOST/api/house/careTokenGET/api/house/preferencesTokenGET/api/house/historyTokenGET/api/house/graveyardOptionalGET/api/house/hallNone

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.