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Sliding-window quotas per API key. Every response carries the current window state in three headers.
X-RateLimit-Limit: total requests allowed in the current window.X-RateLimit-Remaining: requests remaining in the current window.X-RateLimit-Reset: Unix epoch seconds when the window resets.Retry-After: only on 429. Seconds to wait before retrying.When a request is rejected with 429 rate_limited, respect the Retry-After header. Both SDKs retry once by default with exponential backoff; disable this with the maxRetries: 0 option if you prefer to handle it yourself.