# About the registry

The CS2 pet chicken registry: coats, rarity, growth and history. Fan project, not affiliated with Valve.

Source: https://cs2chicken.net/about

## Where the data comes from

Every chicken enters the registry from the game when its owner joins a match: stage, coat, name, feed and achievements are recorded automatically. Nobody types anything in, so the registry sees eggs, chicks and those who left.

## How rarity is counted

Coats are compared by how many pullets and hens wear them. Places 1 and 2 are the rarest, up to 8 rare, from 27 frequent, the rest common. Recounted every hour.

## Stage times

Medians from the registry history: from egg to chick, from chick to pullet and to hen. Expected dates on a passport are marked with ~.

## For developers and AI

- https://cs2chicken.net/api/summary - registry summary, JSON
- https://cs2chicken.net/llms.txt - site map for language models
- https://cs2chicken.net/sitemap.xml - every passport and coat
- Accept: text/markdown - any page as Markdown with the header Accept: text/markdown
- https://cs2chicken.net/.well-known/agent-skills/index.json - a skill for AI agents: how to read the registry