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Webhooks allow your application to receive real-time notifications when events happen in your Nomos account. When an event occurs, such as when a subscription is created or an invoice is finalized, Nomos sends an HTTPS POST request to your configured endpoint with details about the event.
Webhooks are essential for building reliable integrations that respond to asynchronous events. Rather than continuously polling for updates, webhooks push data to your application in real-time.

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Overview

Webhooks enable you to:
  • React to events instantly: Get notified the moment something happens in your Nomos account
  • Reduce polling: No need to continuously check for updates via API calls
  • Build asynchronous workflows: Handle long-running processes without blocking user interactions

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Getting started

  1. Set up an endpoint: Create an HTTPS endpoint in your application to receive webhook POST requests
  2. Register your endpoint: Access your dashboard to register your webhook URL and receive a webhook secret
  3. Verify signatures: Always validate incoming requests using the provided signature verification (see Verify requests)
  4. Process events: Handle the event data based on the topic field (see Event types)
  5. Respond quickly: Return a 2xx status code within 30 seconds (see Retries and replays)
For an end-to-end implementation including signature verification, idempotency, and dispatching on topic, follow the Listen to webhooks guide.

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Testing

After creating a webhook, you can use the “Action Menu” on the right side of the table row. Select the ”…” dots and use the “Testen” action item to trigger a signed event to your endpoint with the following payload: 
{
  "topic": "test.event"
}