Our API is versioned, that way, when we introduce changes to our API you won't need to rewrite the whole integration.
https://online.paggi.com/api/{version}/
Example for current version, v4 :
curl https://online.paggi.com/api/v4/ \
-u B31DCE74-E768-43ED-86DA-85501612548F: \
-H "Content-Type: application/json"