BlogBasecamp Webhooks

How to Test Basecamp Webhooks

Basecamp webhooks deliver project activity events including to-dos, messages, and comments to keep integrations current.

Basecamp Official Webhook Docs

1. Basecamp Webhook Events

Basecamp can send the following webhook events to your endpoint:

todo_created
todo_completed
message_created
comment_created
document_created
upload_created

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Basecamp 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 Basecamp 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 Basecamp Webhook Payload

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

payload.json
{
  "id": 9007199254741200,
  "kind": "todo_completed",
  "created_at": "2026-03-20T14:45:00.000Z",
  "recording": {
    "id": 1069479338,
    "title": "Deploy webhook endpoint",
    "type": "Todo",
    "status": "completed"
  },
  "creator": {
    "id": 1049715914,
    "name": "Jordan Smith"
  }
}

4. Common Issues & Troubleshooting

Webhook not arriving?

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

Need to verify webhook signatures?

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

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