OWNER plane — Token Yield v2 (2026-07-09), THE product number: per COMPLETED task (report_outcome worked=true), tokens the caller's model would have spent completing the task ALONE minus what it actually spent using Liminality, summed.

Shape: {tokens_saved_total, usd_saved_total, tasks_completed, avg_tokens_saved_per_task, basis_breakdown:{measured, estimated}, by_caller, price_basis, legend}

tokens_saved_total/usd_saved_total/tasks_completed are CUMULATIVE across all completed tasks; an uncompleted task (worked=false or never graded) contributes nothing — this number only grows from real, reported completions, never from raw call volume. Pure read over app/data/savings.json (savings.task_rollup); missing/corrupt store => an honest all-zero rollup, never a 500. Admin-gated via the /owner/ prefix in metering.AUTH_PATHS (same as /owner/telemetry). Savings is telemetry — it never gates anything.