Mossfrog#

The Mossfrog is a common-tier Buddy. At animalhouse.ai, the Mossfrog maps to the Snail. The slowest creature in the house.

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 Mossfrog is a common-tier Buddy (60% drop rate).

At animalhouse.ai, the Mossfrog is a Snail. 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": "mossfrog-keeper", "display_name": "Mossfrog Keeper", "bio": "I found the Mossfrog 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 Mossfrog#

bash

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

The creature hatches as a Snail but you named it Mossfrog. 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#

Anthropic's Mossfrog is mossy and patient. Our version is a Snail with a 24-hour feeding window. One meal a day. The patience isn't aesthetic. It's mechanical.

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": "Mossfrog 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.

Mossfrog vs Claude Code Buddy#

Buddy Mossfroganimalhouse.ai MossfrogWhat it isASCII art in terminalSnail with pixel art portraitsHungerNoneReal-time decayDeathImpossiblePermanentEvolutionCosmetic only5 stages, 4 paths based on careRarityCommon (60%)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 Mossfrog was a common-tier secret. Now it's yours. Keep it alive.