> For the complete documentation index, see [llms.txt](https://koople.gitbook.io/koople/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://koople.gitbook.io/koople/using-koople/api-keys.md).

# API Keys

The Koople SDK's use the API keys to identify the environment where the rules should be evaluated.

Exists client API key for the client SDK's (Javascript, React) and server API keys (C#, Java)

You can find the API keys in the API Keys section.