> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spark360.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Spark360 Outbound Webhooks

> Send Spark360 lead and widget events to your systems using signed HTTPS webhooks.

Spark360 webhooks deliver key lead lifecycle and widget status events to your endpoint so you can automate CRM updates, internal notifications, and downstream workflows.

<Note>
  `lead.enriched` is the required core event for every subscription and cannot be disabled.
</Note>

## What you get

* Event-driven outbound delivery for lead and widget lifecycle changes
* HMAC-SHA256 request signing on every delivery
* Retry and abandonment behavior for endpoint failures
* Delivery status tracking and failure notifications

## Event families

* Lead events: `lead.address_preview`, `lead.enriched`, `lead.rental_alert`, `lead.contact_requested`
* Widget event: `widget.status_changed`

For canonical payload structure (including grouped `source_tracking` and system fallback values), see [Events Overview](/webhooks/events/overview).

Go to [Quickstart](/webhooks/quickstart) to register your endpoint and receive your first event.