# FAQs

* Can connectors built with Connector builder be used with the APIs? - Yes, you can retrieve their Service and Service Environment IDs
* Can I use core/trigger/helper connectors? - These are not yet available via API.
* What is a billable call? - Every time the Call Connector endpoint is used.
* Can I get a view on the number of billable calls we are making? - Not yet - your CSM will assist you in providing regular reports
* Can I see what scopes are needed for each operation? - No, Tray does not provide that information. You will need to investigate with 3rd parties
* Is there a concurrency limit?
  * Yes, it is set to the default. Please contact support if you wish to increase concurrency.