Api Usage Breakdowns List Retrieve

GET /api/usage-breakdowns/list/

Usage cost and request breakdown by dimension. The breakdown_by param selects the grouping dimension (provider_id, model, deployment_name, or feature). Defaults to current billing period.

When breakdown_by=feature, returns logging vs proxy cost split. All other values query ClickHouse aggregations.

Query params: breakdown_by, sort_by, start_time, end_time, org (superadmin). Response: { breakdown_by, breakdown_items, summary, billing_periods, start_time, end_time }