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

# Overview

> Webhooks developers use with HG.Cash

## Who this section is for

Partners and backends can receive **HTTPS callbacks from HG.Cash**. HG.Cash sends `POST` requests with JSON when ledger **transactions** change or **transaction requests** (such as outbound / cash-out transfers) transition state. Optionally verify deliveries with **HMAC-SHA256**.

Work with HG.Cash onboarding for **URLs**, **signing secrets**, and sandbox vs production endpoints.

## Guides in this section

* **[Checkouts](/checkouts/introduction)** — Hosted payment pages for Argentina, Brazil, and Chile (create, validate, reconcile in the dashboard and via `POST /api/v1/checkouts`).
* **[Receiving webhooks](/developers/receiving-webhooks)** — Default callback URL & signing secret, `X-HG-Webhook-Signature`, JSON body (`type`: ledger transaction vs `request` for transaction requests), and automatic retry policy.
* **[Delivery history and health monitoring](/developers/webhook-delivery-and-monitoring)** — Dashboard delivery logs per transaction or transfer, manual retry, daily health checks, auto-disable on repeated failures, and email alerts.