Not an API developer
We have a server based application , Fetchit from Schultz Technology, that integrates to Ring Central and provides screen pops with CID name and number.
Since moving the site to a multi-site environment and adding a couple of new sites. The application pops call data from all sites, even thought the credentials used to authenticate are a super user limited to just to just the original site.
Software provider says it is Ring Central’s responsibility to filter the traffic