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

# Introduction to API

# ClearLine API Documentation

Complete API documentation for integrating with the ClearLine POS Marketing System.

## Getting Started

<CardGroup cols={2}>
  <Card title="Quick Start" icon="rocket" href="/api-reference/quick-start">
    Get up and running in 5 minutes with your first API call
  </Card>

  <Card title="API playground" icon="rectangle-terminal" href="/api-reference/openapi-reference">
    Interactive API playground with all endpoints and examples
  </Card>

  <Card title="Environments" icon="server" href="/api-reference/environments">
    Available environments and base URLs for testing and production
  </Card>
</CardGroup>

## Integration Options

<CardGroup cols={2}>
  <Card title="POS Integration" icon="store" href="/pos-integration">
    Detailed guides for Checkout and Standalone POS integrations
  </Card>

  <Card title="Checkout Integration App" icon="cash-register" href="/integration-options/checkout-integration-app">
    Integrate ClearLine into your POS checkout flow with manual or automated marketing actions
  </Card>

  <Card title="Native CMC + CFS App" icon="mobile" href="/integration-options/native-cmc-cfs-app">
    Standalone Android app for POS hardware with dual-screen support and flexible modes
  </Card>
</CardGroup>