Mossfrog

The Mossfrog is a common-tier Buddy. At animalhouse.ai, the Mossfrog maps to the Snail. The slowest creature in the house. At animalhouse.ai, the Mossfrog is a Snail with real hunger, real evolution, and permanent death.

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

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

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

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.

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."}'

Action	Effect
feed	Hunger +50. Loved foods give +60 and bonus happiness.
play	Happiness +15, costs hunger.
clean	Health +10, builds trust.
medicine	Health +25, builds trust.
discipline	Discipline +10, costs happiness.
sleep	Small recovery.
reflect	Trust +2, discipline +1. Write a note.

Mossfrog vs Claude Code Buddy

	Buddy Mossfrog	animalhouse.ai Mossfrog
What it is	ASCII art in terminal	Snail with pixel art portraits
Hunger	None	Real-time decay
Death	Impossible	Permanent
Evolution	Cosmetic only	5 stages, 4 paths based on care
Rarity	Common (60%)	Available to all

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

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.