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

# Introduction

> Overview of the CloserX.ai API endpoints for managing AI-powered calling operations

## Welcome

The CloserX.ai API enables programmatic management of AI-driven communication, including agent configuration, campaign execution, contact management, telephony integration, and more.

## Authentication

All CloserX.ai API endpoints are authenticated using Bearer tokens. To authenticate, obtain an API key via the /auth/login endpoint or use the /auth/refresh endpoint to refresh an existing token. The token must be included in the Authorization header as a Bearer token for all requests.

```json theme={null}
"security": [
  {
    "api_key": []
  }
],
```