> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.send-2.com/send-2-sms-api/introduction/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.send-2.com/_mcp/server.

# Introduction

This **SMS API** collection provides a streamlined interface for interacting with our SMS messaging service.

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## Authentication

All requests are authenticated using a **Bearer token**, passed in the `Authorization` header in the following format:

#### JavaScript

```javascript
Authorization: Bearer <your_token>

```

#### Python

```python
Authorization: Bearer <your_token>

```

#### Java

```java
Authorization: Bearer <your_token>

```

#### cURL

```curl
Authorization: Bearer <your_token>

```

#### Shell

```bash
Authorization: Bearer <your_token>

```

**Obtain your API token** from your account dashboard or via your account administrator.

> **Security tip:** Always store your token as a **secret** variable type in your environment to prevent it from being exposed in logs etc.