BlogKit Webhooks

How to Test Kit Webhooks

Kit (formerly ConvertKit) webhooks fire on subscriber events like new signups, tag additions, and purchase completions.

Kit Official Webhook Docs

1. Kit Webhook Events

Kit can send the following webhook events to your endpoint:

subscriber.subscriber_activate
subscriber.subscriber_unsubscribe
subscriber.tag_add
subscriber.tag_remove
purchase.purchase_create
subscriber.form_subscribe

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Kit 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 Kit 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 Kit Webhook Payload

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

payload.json
{
  "subscriber": {
    "id": 1234567,
    "first_name": "Taylor",
    "email_address": "taylor@example.com",
    "state": "active",
    "created_at": "2026-03-20T12:15:00.000Z",
    "tags": [
      {
        "id": 101,
        "name": "webhook-users"
      }
    ]
  }
}

4. Common Issues & Troubleshooting

Webhook not arriving?

Check that your endpoint URL is correct and publicly accessible. Kit 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 Kit's side. Check your webhook configuration and event selection.

Need to verify webhook signatures?

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

Ready to test Kit webhooks?

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