Guest API: Querying Agent Utilization Metrics by 30-Minute Intervals

Stuck on a problem and need help troubleshooting a request to the Analytics API for agent utilization metrics (tHandle, tAcw, tHold) broken down by 30-minute intervals.

I am constructing a GET request to /api/v2/analytics/agents/summary with the following query parameters:

GET /api/v2/analytics/agents/summary?dateFrom=2023-10-01T00:00:00.000Z&dateTo=2023-10-01T23:59:59.999Z&grouping=byAgent&interval=30m&metrics=tHandle,tAcw,tHold

The endpoint returns a 200 OK, but the response payload lacks the granular 30-minute interval data, returning only daily aggregates instead.

“The response does not include the expected interval breakdown for the requested metrics.”

Is there a specific metric configuration or additional header required to force the API to return data at the 30m interval level for these specific interaction metrics?