Your key's tier, quota, and usage this month

Introspection for the calling key: tier, monthly quota, requests used and remaining this month, per-minute rate limit, and webhook slots. The numbers come from the same counters the limits are enforced with (UTC calendar month, resets at 00:00 UTC on the 1st — quota_resets_at is the exact instant), so they cannot disagree with a 429 you just received. Calling this endpoint does NOT count against the monthly quota; it does count toward the per-minute rate limit. webhooks.limit is null on tiers with unlimited subscriptions.