API Keys
Check API key usage
Returns current month usage and remaining quota for the provided API key. basis says which ceiling actually governs the key: "monthly" for a free or subscription key, "credits" for a prepaid bundle. On a bundle key, used counts the calls billed this month for information only — nothing is enforced against limit/remaining, and the balance that can turn a call away is served alongside as credits_remaining / credits_total.
get/v1/keys/usage
Response
Usage for the current month: used, limit, remaining, month, key_prefix, basis — plus credits_remaining, credits_total and an explanatory note when basis is "credits"