Runs Summary

Aggregate run statistics for a workflow over an optional date window.

Returns per-status counts (completed, failed, cancelled, pending, running, paused) plus three derived metrics:

• pass_rate: completed / (completed + failed). Cancelled runs are user-aborted, not quality failures, so they are excluded. null when there are no non-cancelled terminal runs in the window.
• delivered_audio_ms: total delivered-take audio in milliseconds, summed over completed runs.
• average_duration_seconds: mean active duration — completed_at - started_at minus paused time — over successfully completed runs only. null when no runs have completed.

Date range: from / to filter by created_at. Both must be ISO 8601 with a UTC offset; a naive datetime returns 422. An inverted range (from > to) also returns 422. Omit both to aggregate over all runs.

Use GET /runs with ?status= filters for individual run details; this endpoint is best for dashboard-style health metrics.