Integrate a third-party ordering channel with Lightspeed Restaurant K-Series by creating a webhook subscription for order and payment events

Steps

1. Apply for API access through the Lightspeed K-Series API portal and complete the partner agreement before receiving production credentials
2. Authenticate using the OAuth 2.0 flow described in the K-Series API docs to obtain a Bearer token scoped to the target business location
3. Create a webhook subscription by POSTing to the webhook endpoint documented in the K-Series API, specifying your callback URL and the event types you want to receive (for example, order and payment events)
4. Implement your callback endpoint to receive and acknowledge K-Series webhook payloads for events such as Order DELIVERED, Account CLOSED, and Payment SUCCESS or FAILURE
5. On order events, use the order identifier from the webhook payload to retrieve full order details via the corresponding GET endpoint in the K-Series API
6. Rotate and securely store your OAuth credentials; test thoroughly in the K-Series staging environment before requesting production approval