Unity has the REST API available.  Please have a look at this document:

Dell Unity™ Family Unisphere® Management REST API Programmer's Guide | Dell US

@BillStein-Dell​ 

Thanks. I was read it before that . but can not find out how can use it

for example how can run follow command on linux server to get data from unity

GET api/types/disk/instances?per_page=3&page=2&fields=name,pool,tierType&compact=true

worst case you can run uemcli commands and parse output in your favorite scripting language