What API endpoint would we use to drive a few realtime KPIs on an internal dashboard?

We already have a call center dashboard internally that tracks all the various email/chat queues inbound and would like to add a couple tiles around dialpad callcenter current live calls, queue depth and callback requests. The dialpad dashboard has the data we need, but we were hoping to gather a few of these metrics via the API to put them in our own dashboard. I can't quite find an endpoint that gives me that data. Any help is appreciated, thanks!