> For the complete documentation index, see [llms.txt](https://docs.zeta.markets/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zeta.markets/rewards-programs/usdzex.md).

# $ZEX

$ZEX is the token issued by [Zeta Foundation](https://zeta-foundation.gitbook.io/zeta-foundation) is used on the Zeta Markets protocol, driving protocol growth and participation. As of May 2025 ZEX and the Zeta Markets Protocol has been discontinued.<br>