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Rate limits apply to authenticated service requests. Each request consumes one unit from the account’s current UTC calendar month.

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Headers

Finite plan limits include:
Unlimited plans return:

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Plan limits

Usage is tracked per account and UTC calendar month. A new month starts with a fresh counter. Limits depend on the plan associated with your account. Visit ECS support if the limit shown for your account differs from this table.

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Limit response

When a finite limit is reached, the API returns HTTP 429:
Use exponential backoff and avoid sending parallel retry storms. Use X-RateLimit-Reset as the Unix timestamp for the next quota reset.