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

# Overview

> Learn how the API delivers event notifications

Webhooks deliver notifications of events as HTTP requests whenever important data within your account changes. This allows you to react to events in real time and eliminates the need for polling.

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## Getting Started

<div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-2 gap-6">
  <Card title="Setup" icon="plug" href="/api-reference/webhooks/setup">
    Register your endpoint, understand request headers, event structure, and retry behaviour.
  </Card>

  <Card title="Verification" icon="shield-check" href="/api-reference/webhooks/verification">
    Verify event authenticity, prevent replay attacks, and handle duplicate events.
  </Card>
</div>

***

## Events

<div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-2 gap-6">
  <Card title="Payment Sessions" icon="arrow-right-arrow-left" href="/api-reference/collect/payment_sessions/webhook/created">
    Events for session creation, updates, and completion.
  </Card>

  <Card title="Payment Requests" icon="link" href="/api-reference/collect/payment_requests/webhook/created">
    Events for payment request creation, updates, and payment.
  </Card>

  <Card title="Payment Pages" icon="browser" href="/api-reference/collect/payment_pages/webhook/payment_received">
    Events for payments received on hosted payment pages.
  </Card>

  <Card title="Payments" icon="credit-card" href="/api-reference/collect/payments/webhook/succeeded">
    Events for payment success, failure, capture, and void.
  </Card>

  <Card title="Subscriptions" icon="calendar" href="/api-reference/collect/subscriptions/webhook/created">
    Events for subscription creation, ending, and cancellation.
  </Card>

  <Card title="Redemptions" icon="ticket" href="/api-reference/collect/redemptions/webhook/created">
    Events for redemption creation, confirmation, and failure.
  </Card>

  <Card title="Billing" icon="file-invoice" href="/api-reference/billing/webhook/obligation_amount_applied">
    Events for billing lifecycle activity.
  </Card>
</div>