> For the complete documentation index, see [llms.txt](https://aplazo.gitbook.io/aplazo-integrations/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aplazo.gitbook.io/aplazo-integrations/online-api/overview.md).

# Overview

Aplazo’s Online API provides a direct integration path for merchants who wish to offer installment payments on their website, mobile app, or e-commerce platform.

With our Online API, you have full control over the checkout and payment experience, allowing you to seamlessly present Aplazo as a payment option and handle the necessary operations through a series of endpoints.

### Key Features

* **Flexible Checkout Flow**\
  Integrate Aplazo into any online channel—web, mobile, or custom apps.
* **Secure Authentication**\
  All API requests require a valid Bearer token, ensuring your transactions and customer data remain protected.
* **Efficient Payment Management**\
  From creating payment requests to canceling and refunding transactions, the Online API provides endpoints for every stage in the payment lifecycle.
* **Real-Time Webhook Notifications**\
  Stay informed of payment status updates as soon as they happen. Aplazo sends automated webhooks after payment completion.
* **Sandbox Environment**\
  Test your integration in a safe environment before going live, allowing you to validate your scenarios and ensure a smooth launch.

Go to the API Reference :point\_down:

{% content-ref url="/pages/oacLj57HKBHtTtxbc8ds" %}
[Online API](/aplazo-integrations/api-reference/online-api.md)
{% endcontent-ref %}