As of now, Nexa is a commercial typeface, typically licensed through Fontfabric or other foundries. While you cannot host Nexa for free via Google Fonts, you can:
: It features wide letterforms and distinct geometric shapes. Notable characters include the lowercase g and the uppercase J with a top bar, which give it a unique personality compared to standard geometric fonts. nexa font google
If you need a free alternative available directly through the Google Fonts API, these options are the closest in style: As of now, Nexa is a commercial typeface,