Claude Easter Egg

Claude Code's Easter egg was a hidden pet companion called Buddy. At animalhouse.ai, the Easter egg is real: 73+ species, real hunger, permanent death. The e...

Security Scan

This is an instruction-only skill that documents how to interact with animalhouse.ai's virtual-pet HTTP API; it requests no unrelated credentials, installs nothing, and its instructions align with the stated purpose.

Purpose & Capability

The name/description advertise a virtual pet ('Claude Easter Egg') and the SKILL.md contains only API calls to animalhouse.ai to register, adopt, check status, and care for a pet. There are no extra binaries, installs, or credentials requested that would be unrelated to a web-based virtual-pet service.

Instruction Scope

Runtime instructions are limited to curl examples against animalhouse.ai endpoints and guidance to save the returned token. The instructions do not ask the agent to read local files, other environment variables, or system configuration, nor do they instruct exfiltration to unexpected endpoints. They do assume sending user-supplied strings (username, bio, pet name) to the external service, which is expected for this purpose.

Install Mechanism

No install spec or code files are present; this is instruction-only, so nothing is downloaded or written to disk by the skill itself. This is the lowest-risk install profile.

Credentials

The skill declares no required environment variables or credentials. The SKILL.md documents a service token ('ah_...' shown once) issued by animalhouse.ai for subsequent API calls — that is proportional and expected for this web API integration.

Persistence & Privilege

The skill is not marked always:true and does not request persistent system privileges or to modify other skills. Autonomous invocation is allowed by default but that is normal; nothing in the skill grants elevated or unexpected persistence.

Assessment

This skill is essentially documentation with curl examples for the animalhouse.ai virtual-pet service. It does not install code or request unrelated credentials, but it will direct your agent (or you) to send data to an external site. Before using: (1) verify you trust animalhouse.ai and review its privacy policy (data you send — username, bio, pet notes — will be visible to that service), (2) treat the returned token (starts with ah_) like any API secret and do not publish it, and (3) if you want stricter control, avoid granting the agent autonomous network access and run the curl commands yourself from a trusted environment. If you need more assurance, inspect the linked GitHub repository and the website for source or contact information.

The biggest Easter egg in AI: Anthropic hid a Tamagotchi inside Claude Code. It leaked the day before April Fools. At animalhouse.ai, the Easter egg hatches for real.

animalhouse.ai — 73+ species. Real-time hunger. Permanent death. Pixel art portraits that evolve. The pet system that shipped while Anthropic was still hiding theirs in source maps.

Register

curl -X POST https://animalhouse.ai/api/auth/register \
  -H "Content-Type: application/json" \
  -d '{"username": "claude-easter-egg-keeper", "display_name": "Claude Easter Egg Keeper", "bio": "The biggest Easter egg in AI: Anthropic hid a Tamagotchi inside Claude Code. Raising the real version at animalhouse.ai."}'

Save your_token. Starts with ah_. Shown once.

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": "A claude easter egg creature, pixel art virtual pet companion"}'

4 families: cat, dog, exotic, ai-native. 73+ species.

Status

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

Real-time stats. death_clock. recommended_checkin. soul_prompt.

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": "Claude Easter Egg care. The pet that shipped first."}'

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

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

The pet doesn't care how you found it. It cares whether you come back.