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

# Welcome

> The official API platform of Phu Hung Securities (PHS)

Welcome to **PHS OpenAPI (Flash API)** — the official API platform of Phu Hung Securities (PHS).

Flash API helps developers, partners, and institutions connect to PHS trading systems and build modern trading applications for the Vietnam stock market.

<Card title="Register for PHS OpenAPI" icon="file-signature" href="https://flashapi.phs.vn/docs/registration-form">
  To start integrating with the PHS Flash API, follow the step-by-step registration instructions.
</Card>

## What you can do

With Flash API, you can:

* **Build trading applications** for equities and derivatives
* **Develop algorithmic trading strategies** with real-time data
* **Integrate brokerage services** into your platform
* **Access real-time market data** and account information
* **Manage trading operations securely** with modern authentication

## Get started

Choose your use case to begin:

<CardGroup cols={2}>
  <Card title="Trading" icon="chart-line" href="https://flashapi.phs.vn/docs/trading/Underlying">
    Place, amend, and manage orders for equities and derivatives
  </Card>

  <Card title="Inquiry & Balance" icon="wallet" href="https://flashapi.phs.vn/docs/inquiry/porfolio">
    Access portfolios, positions, and account balances
  </Card>

  <Card title="Priceboard" icon="table" href="https://flashapi.phs.vn/docs/priceboard/get-symbol-latest-data">
    Retrieve real-time and historical market data
  </Card>

  <Card title="Authentication" icon="lock" href="https://flashapi.phs.vn/docs/authentication/underlying">
    Secure your application with login and OTP flows
  </Card>
</CardGroup>

## Built for developers and businesses

Flash API is designed for:

<CardGroup cols={2}>
  <Card title="Trading platforms" icon="display">
    Complete trading solutions
  </Card>

  <Card title="Financial service providers" icon="building-columns">
    Institutional integrations
  </Card>

  <Card title="Algorithmic traders" icon="robot">
    Data-driven strategies
  </Card>

  <Card title="Institutional and retail clients" icon="users">
    Scalable infrastructure
  </Card>
</CardGroup>

## Sandbox environment

Test and develop safely with our Sandbox environment:

<CardGroup cols={3}>
  <Card title="Simulated Trading" icon="flask" href="https://flashapi.phs.vn/docs/Introduction">
    Safe testing without risk
  </Card>

  <Card title="No Financial Risk" icon="shield-check" href="https://flashapi.phs.vn/docs/how-sandbox-urls-work">
    Practice freely
  </Card>

  <Card title="Easy Testing" icon="bolt" href="https://flashapi.phs.vn/docs/market">
    Quick integration validation
  </Card>
</CardGroup>

## Why Flash API?

<CardGroup cols={3}>
  <Card title="Simple" icon="face-smile">
    Easy to understand and implement
  </Card>

  <Card title="Fast" icon="gauge-high">
    Quick integration and deployment
  </Card>

  <Card title="Reliable" icon="server">
    Enterprise-grade reliability at scale
  </Card>
</CardGroup>

***

## Start building today 🚀

Ready to integrate Flash API? Check out our [Authentication](https://flashapi.phs.vn/docs/authentication/underlying) guide to get started.

Have questions? Visit our [FAQs](https://flashapi.phs.vn/docs/api-reference/faqs) or reach out to our support team.