Rate Limits

{
  "error": {
    "code": "rate_limited",
    "message": "Too many requests. Retry later.",
    "requestId": "req_123"
  }
}

​

Client behavior

• Back off on 429.
• Use idempotency keys for retryable mutations. An exact replay of a completed write does not count toward the limit; see Idempotency.
• Prefer pagination instead of large unbounded reads.
• Avoid parallel writes against the same campaign or contact list unless your workflow is idempotent.