Retrieves a daily usage report for the authenticated user, including token counts, request counts, and costs.
Predefined period: 'day', 'week', or 'month'.
Custom start date (YYYY-MM-DD). Overrides period when both start_date and end_date are provided.
Custom end date (YYYY-MM-DD). Overrides period when both start_date and end_date are provided.
Successful Response
Daily usage breakdown for the requested period.
The period that was queried (day, week, month, or custom).
Start date of the report (YYYY-MM-DD).
End date of the report (YYYY-MM-DD).
ISO timestamp when the report was generated.