BlogLaunchDarkly Webhooks

How to Test LaunchDarkly Webhooks

LaunchDarkly webhooks notify your systems when feature flags, environments, and projects are modified.

LaunchDarkly Official Webhook Docs

1. LaunchDarkly Webhook Events

LaunchDarkly can send the following webhook events to your endpoint:

flag.created
flag.updated
flag.deleted
project.created
environment.created
member.invited

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving LaunchDarkly webhooks for testing:

  1. Go to HookRay and click "Start Testing — Free" to get your unique webhook URL.
  2. Copy the URL (e.g., https://h.hookray.com/abc123).
  3. In your LaunchDarkly dashboard, navigate to the webhook settings and paste the HookRay URL as your endpoint.
  4. Select the events you want to receive (see list above).
  5. Trigger a test event — HookRay will show the incoming webhook in real-time.

3. Sample LaunchDarkly Webhook Payload

Here's an example of what a LaunchDarkly webhook payload looks like:

payload.json
{
  "_id": "abc123xyz789",
  "kind": "flag",
  "name": "enable-webhook-retry",
  "description": "Enable retry logic for failed webhooks",
  "currentVersion": 3,
  "accesses": [
    {
      "action": "updateOn",
      "resource": "proj/hookray:env/production:flag/enable-webhook-retry",
      "date": 1763593800000
    }
  ],
  "date": 1763593800000,
  "member": {
    "email": "dev@example.com"
  }
}

4. Common Issues & Troubleshooting

Webhook not arriving?

Check that your endpoint URL is correct and publicly accessible. LaunchDarkly cannot reach localhost URLs — use HookRay's cloud URL instead.

Getting 400 or 500 errors?

HookRay accepts any payload and returns 200 OK by default, so the issue is likely on LaunchDarkly's side. Check your webhook configuration and event selection.

Need to verify webhook signatures?

LaunchDarkly signs webhook requests for security. Use HookRay to capture the raw headers and body, then implement signature verification in your application code.

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 LaunchDarkly-specific fields highlighted automatically
  • Check the LaunchDarkly webhook documentation for the complete event reference

Ready to test LaunchDarkly webhooks?

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