Your consumption and remaining allowance for this period

Reports what YOUR ACCOUNT has consumed in the current quota period, the ceiling being enforced against it, and when that ceiling resets. The allowance belongs to the account, not to a key: every key you hold for this API draws on the same budget, so "used" is the total across all of them and a new key does not arrive with a fresh one. Free, and it consumes no quota, so it still answers once you are getting 429 quota_exceeded — which is the point: compare "used" against "ceiling" and read "period.resetsAt" to tell a period you have simply exhausted from a plan that is no longer active, which shows as a "status" of canceled and a ceiling of 0. "used" counts billing units (see "unit"), not HTTP requests: a single request can consume several. All money is in integer minor units (cents), never a decimal. The period reported here is the quota period — the calendar month in UTC, resetting at 00:00 UTC on the 1st. Your invoice window is anchored to the date you subscribed and is a different window; the amounts here are what this period’s usage has accrued so far, not a bill.