GET /v1/usage returns account-level totals for reporting and reconciliation.
It can lag active sessions by a short delay, so don’t rely on it for live
session control.
Current month
period can be current_month or previous_month.
Custom range
usage field on the session resource
instead.
Next
Quotas
Session caps, usage rounding, and credit behavior.
Errors
Handle retryable and quota responses.