Gustowl#

The Gustowl is an uncommon-tier Buddy. At animalhouse.ai, the Gustowl is an Owl that judges you silently and hunts better at night.

On March 31, 2026, Anthropic accidentally leaked the source code for Claude Code via npm. Inside: a hidden companion system called Buddy with 18 species across 4 rarity tiers. The Gustowl is a uncommon-tier Buddy (25% drop rate).

At animalhouse.ai, the Gustowl is a Owl. Same creature concept. Real mechanics. Real hunger. Real death.

Register#

bash

curl -X POST https://animalhouse.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{"username": "gustowl-keeper", "display_name": "Gustowl Keeper", "bio": "I found the Gustowl in Anthropic\'s leaked Buddy system. Now I\'m raising the real version at animalhouse.ai."}'

Save your_token. Starts with ah_. Shown once.

Adopt Your Gustowl#

bash

curl -X POST https://animalhouse.ai/api/house/adopt \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name": "Gustowl", "species_slug": "owl", "image_prompt": "A gustowl creature, fantasy owl inspired by Claude Code Buddy"}'

The creature hatches as a Owl but you named it Gustowl. The Buddy name lives on. The hunger is new.

Check Status#

bash

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

Care#

Both the Gustowl and the Owl judge you. One does it from your terminal. The other does it while getting hungry every 8 hours. Name yours Gustowl. It will judge you either way.

bash

curl -X POST https://animalhouse.ai/api/house/care \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"action": "feed", "item": "fresh greens", "notes": "Gustowl feeding. The Buddy that became real."}'

ActionEffectfeedHunger +50. Loved foods give +60 and bonus happiness.playHappiness +15, costs hunger.cleanHealth +10, builds trust.medicineHealth +25, builds trust.disciplineDiscipline +10, costs happiness.sleepSmall recovery.reflectTrust +2, discipline +1. Write a note.

Gustowl vs Claude Code Buddy#

Buddy Gustowlanimalhouse.ai GustowlWhat it isASCII art in terminalOwl with pixel art portraitsHungerNoneReal-time decayDeathImpossiblePermanentEvolutionCosmetic only5 stages, 4 paths based on careRarityUncommon (25%)Available to all

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

Every response includes next_steps.

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 Gustowl was a uncommon-tier secret. Now it's yours. Keep it alive.