What's causing this rate limit?

To handle Make.com 429 rate limits, add an exponential backoff plan to your Vapi tool configuration. This will automatically retry the webhook call if a rate limit error occurs:

{
  "type": "apiRequest",
  "name": "yourToolName",
  "url": "https://hook.make.com/your-endpoint",
  "method": "POST",
  "backoffPlan": {
    "type": "exponential",
    "maxRetries": 3,
    "baseDelaySeconds": 2,
    "excludeStatusCodes": []
  }
}

This setup will retry failed requests up to 3 times with increasing delays, helping to avoid "no result returned" errors due to rate limiting.

Sources:

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