How to Test New Relic Webhooks
New Relic webhook destinations forward alert notifications for APM, infrastructure, and synthetic monitor incidents.
Looking for the broader picture? See the 7 best webhook testing tools (2026), or if you're already on Webhook.site, the 60-second migration to HookRay.
New Relic Official Webhook Docs1. New Relic Webhook Events
New Relic can send the following webhook events to your endpoint:
incident.openedincident.acknowledgedincident.closedviolation.openedviolation.closed2. Set Up a Test Endpoint with HookRay
Follow these steps to start receiving New Relic webhooks for testing:
- Go to HookRay and click "Start Testing — Free" to get your unique webhook URL.
- Copy the URL (e.g.,
https://h.hookray.com/abc123). - In your New Relic dashboard, navigate to the webhook settings and paste the HookRay URL as your endpoint.
- Select the events you want to receive (see list above).
- Trigger a test event — HookRay will show the incoming webhook in real-time.
3. Sample New Relic Webhook Payload
Here's an example of what a New Relic webhook payload looks like:
{
"account_id": 1234567,
"account_name": "Acme Production",
"condition_name": "Webhook response time > 2s",
"current_state": "open",
"details": "Response time threshold exceeded",
"event_type": "INCIDENT",
"incident_id": "INC-98765",
"severity": "CRITICAL",
"timestamp": 1763587500,
"violation_chart_url": "https://example.newrelic.com/chart/abc123"
}4. Frequently Asked Questions
How do I test New Relic webhooks without deploying?
Use HookRay to get an instant public webhook URL. Paste it into your New Relic dashboard's webhook configuration, trigger an event, and watch the payload arrive in real time. No code, no ngrok, no deployment required. The free tier captures 100 requests per month and works on all New Relic event types.
Why aren't my New Relic webhooks arriving?
The four most common causes: (1) the endpoint URL isn't publicly accessible — New Relic can't reach localhost; (2) the wrong events are subscribed in your New Relic dashboard; (3) signature verification is rejecting the request before your handler runs; (4) New Relic can't reach your server because of a firewall, expired SSL certificate, or wrong DNS. Use HookRay's URL to isolate which of these four is failing — if HookRay receives the webhook, the problem is in your handler. If HookRay doesn't, the problem is in New Relic configuration.
Why am I getting 400 or 500 errors from my New Relic webhook?
New Relic reports the response status your endpoint returned. HookRay accepts any payload and returns 200 OK by default, so if you see 400/500 in your New Relic dashboard while pointing at HookRay, the issue is in New Relic's configuration (wrong event, malformed signing secret, etc.). If you point at your own endpoint and get 400/500, the issue is in your handler — capture the request with HookRay, replay it locally, and debug from the captured payload.
How do I verify New Relic webhook signatures?
New Relic signs each webhook request with a shared secret. Capture the raw headers and body using HookRay, then verify the signature in your application using New Relic's SDK or a standard HMAC library. Once verification works against HookRay-captured data, you can safely deploy. New Relic's docs (linked above) cover the exact signing algorithm.
Can I replay a captured New Relic webhook?
Yes — HookRay's replay feature re-sends any captured webhook to a different endpoint with one click. This is the fastest way to fix a buggy handler: capture the payload once, fix your code, and replay until it works. No need to re-trigger the event in New Relic.
5. Next Steps
- Use HookRay's webhook replay feature to re-send captured webhooks while building your handler
- Enable smart parsing (Pro plan) to see New Relic-specific fields highlighted automatically
- Check the New Relic webhook documentation for the complete event reference
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Start Testing New Relic Webhooks — FreeFree PDF: Webhook Testing Cheat Sheet 2026
One-page reference for 50+ APIs — canonical events, signing methods, sample payloads. Print it, pin it, share it.
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