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Zapier can receive Larm alerts via the webhook alert channel. No custom Zapier app needed — use the built-in “Webhooks by Zapier” trigger.

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Setup

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1. Create a Zap

In Zapier, create a new Zap. For the trigger, choose Webhooks by Zapier and select Catch Hook. Click Continue — no filtering needed. Copy the webhook URL Zapier gives you (starts with https://hooks.zapier.com/).

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2. Create a webhook alert channel in Larm

In Larm, go to Alert channels and click New alert channel. Select Webhook as the type and paste the Zapier URL.

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3. Set a custom payload template

The default payload puts everything in a single text field, which is hard to work with in Zapier. Set a custom payload template so each field is available separately: 
{
  "event": "{{event}}",
  "status": "{{status}}",
  "monitor_name": "{{monitor_name}}",
  "monitor_url": "{{monitor_url}}",
  "timestamp": "{{timestamp}}",
  "last_error": "{{last_error}}",
  "downtime_duration": "{{downtime_duration}}"
}
See Webhooks for all available variables.

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4. Send a test alert

Click Send test on the alert channel in Larm. Then go back to Zapier and click Test trigger — it should pick up the test event and show the fields.

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5. Add an action

Configure your Zap’s action step. You can map the individual fields (e.g. monitor_name, status) to your action’s inputs.

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Example: Send alerts to a Slack channel

  1. Follow the setup above to create the Zapier trigger
  2. Add an action: Slack → Send Channel Message
  3. Map the fields:
    • Channel: pick your alerts channel
    • Message Text: {{monitor_name}} is {{status}} — {{monitor_url}}
  4. Turn on the Zap
Every Larm alert will now post to your Slack channel through Zapier, where you can add formatting, filters, or additional actions.