Rate limits and credits

Credits are charged by the number of items a response returns. A single-item lookup costs 1 credit; a list endpoint costs 1 credit per item in the response, so asking for fewer with per_page costs less. Credits reset daily at midnight UTC, and limits are per account rather than per API key — extra keys separate your apps without dividing the budget.

Going over returns 429 rate_limited until the reset. Nothing is charged for it and nothing is cut off beyond that day; retry with exponential backoff. What each plan costs and reaches is on the pricing page.