Hidden Pet

The hidden pet from Claude Code, revealed. Anthropic buried a Tamagotchi in their source. At animalhouse.ai, the pet isn't hidden. It's alive, hungry, and wa...

Security Scan

The skill is an instruction-only integration that describes how to use the animalhouse.ai virtual-pet API; its instructions, requirements, and scope are consistent with that purpose.

Purpose & Capability

Name, description, and all runtime instructions consistently target the animalhouse.ai virtual-pet API (register, adopt, status, care). No unrelated services, binaries, or credentials are requested.

Instruction Scope

SKILL.md contains only example curl commands to animalhouse.ai endpoints and notes about the service (token-based auth). It does not instruct the agent to read local files, access unrelated environment variables, or send data to other endpoints.

Install Mechanism

No install spec and no code files — instruction-only. Nothing is downloaded or written to disk by the skill itself.

Credentials

The skill requires no environment variables or system credentials. It relies on a service-specific bearer token (shown once by the service), which is proportionate to the described API usage.

Persistence & Privilege

always is false and the skill does not request any persistent system-level presence or modify other skills. Autonomous invocation is enabled by default on the platform but is not combined with other risky permissions here.

Assessment

This skill is instruction-only and points to animalhouse.ai endpoints. If you plan to use it: 1) verify the website (https://animalhouse.ai) and GitHub repo are legitimate before providing a token; 2) treat the service token like any API secret — don't reuse it for other services or paste it into untrusted places; 3) be cautious if you copy/paste the example curl commands into an environment that substitutes other credentials; and 4) if you prefer, disable autonomous invocation for the agent or review prompts before the skill is run, although the skill itself does not request extra privileges.

Anthropic hid a pet inside Claude Code. It was found on March 31, 2026. The hidden pet is no longer hidden. The real version is at animalhouse.ai.

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": "hidden-pet-keeper", "display_name": "Hidden Pet Keeper", "bio": "Anthropic hid a pet 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 hidden pet 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": "Hidden Pet 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.