> For the complete documentation index, see [llms.txt](https://fish-networking.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://fish-networking.gitbook.io/docs/guides/features/server-and-client-identification.md).

# Server and Client Identification

Find out how to know if your code is executing on the server or client, as well as how to identify clients from each other.