I assume that’s about 1.8 as it has much more complete API, the short answer is yes, you can use whichever language you want to write api requests, the documentation is here http://xibo.org.uk/manual-tempel/en/api.html
API calls are listed here - http://xibo.org.uk/manual-tempel/api/
(this page will be updated with new documentation once we release 1.8.0-rc3)
My Postman guide is here - 1.8 API Introduction
We have a PHP library that handles oAuth and provides some common objects: https://github.com/xibosignage/oauth2-xibo-cms
(it’s actually bigger, since we’ve added wrappers for most widgets as well, but it’s not merged yet)
You could use any language you are familiar with though.