Query extractions
Authentication
Path parameters
Headers
Query parameters
Case-insensitive match on the line item name.
Response headers
The API surface version the server resolved for this request. Always present, regardless of whether the client supplied the request-side SpreadSpace-Version header. Default: 2026-07-19.
Requests left in the current window. Suppressed on 429 responses produced outside the rate limiter (for example a usage throttle), where a remaining budget would be misleading.
Seconds until a guaranteed-fresh window.
The active policy in limit;w=window-seconds form.