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

# Introduction

> Holdstation Pay is a digital asset payment intermediary providing payment solutions for domestic and international partners.

## What is Holdstation Pay?

**Holdstation Pay** is a digital asset payment intermediary that provides payment solutions for both domestic and international partners. It enables partners to integrate **buy/sell token transactions using VND** into their platforms.

<CardGroup cols={2}>
  <Card title="API Integration" icon="code" href="/api-reference/introduction">
    Integrate directly with the Holdstation Pay API for full control over payment flows.
  </Card>

  <Card title="Widget Integration" icon="window" href="/guides/widget-overview">
    Embed the Holdstation Pay Widget into your website with minimal code using an iframe.
  </Card>
</CardGroup>

## What You'll Find

This documentation covers everything you need to integrate with Holdstation Pay:

* **API Endpoints** — Full reference for all available API operations
* **Authentication** — How to authenticate your API requests
* **Order Flow** — Understanding how deposit and withdrawal orders work
* **Webhook Mechanism** — Receive real-time notifications about order status changes
* **Widget Integration** — Embed a payment UI directly into your website

## Quick Links

<CardGroup cols={3}>
  <Card title="Authentication" icon="key" href="/authentication">
    Set up your API keys
  </Card>

  <Card title="Onramp Flow" icon="arrow-up" href="/guides/onramp-flow">
    Buy USDT with VND
  </Card>

  <Card title="Offramp Flow" icon="arrow-down" href="/guides/offramp-flow">
    Sell USDT for VND
  </Card>
</CardGroup>