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

# Introduction

> Welcome to the home of our JSON API Documentation

Transact Bridge APIs are **REST JSON APIs**. Our API accepts JSON requests and returns JSON responses, and uses standard HTTP response codes, authentication.

You can use our APIs in the sandbox(testing) and production(live) environments. We provide two different API URLs and tokens for **Sandbox** and **Production (live)**.

You can use the API in sandbox mode, which doesn't affect your live data or interact with the banking networks. The API key you use to authenticate the request determines whether the request is in live mode or test mode.

Our API doesn't support bulk updates. You can work on only one object per request.

All the APIs are authenticated and cannot be utilized without sending proper authentication headers.

## Quicklinks

<CardGroup cols={2}>
  <Card title="API Endpoints" icon="code" href="https://docs.transactbridge.com">
    Check our postman collection with examples and environment variables for easier integration
  </Card>

  <Card title="No Code Integration" icon="code-simple" href="../checkout.js/checkout/overview">
    Use our Checkout.js library to integrate with your website without writing any code
  </Card>

  <Card title="Check Sandbox" icon="screwdriver-wrench" href="https://sandbox.transactbridge.com">
    Test your integration in our sandbox environment
  </Card>

  <Card title="Check Demo Store" icon="stars" href="https://www.transactbridge.com/demo">
    Check our demo store to see how the integration works
  </Card>
</CardGroup>