{"ok":true,"free":true,"charged":false,"method":"POST","endpoint":"/v1/revenue-ghost/quote","example":{"period":"2026-09","usage":[{"id":"usage-101","subject":"machine-operator-1","meter":"api_calls","units":800,"unit_price_usd":"2.000000"}],"invoices":[{"id":"line-101","usage_id":"usage-101","billed_usd":"100.00"}],"payments":[{"id":"payment-101","invoice_id":"line-101","amount_usd":"80.00","status":"settled"}]},"paid_endpoint":"/v1/revenue-ghost-evidence","fee_usd":"49.90","minimum_candidate_gap_usd":"500.00","limitation":"Only buyer-supplied events, invoices and payments; no external settlement verification."}