Retry-After when the response has one. Errors never cost API credits.
Over the plan’s requests per minute, per key or per workspace. Every response carries RateLimit-Policy and RateLimit headers; wait for Retry-After.
What to do: Wait for Retry-After, then retry.
Response
application/problem+json (RFC 9457) and has a Request-Id header with the same request_id. See all errors.