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

# Introduction

> Build SMS, OTP, WhatsApp QR, Meta WhatsApp, and unified fallback messaging with KarFlows.

KarFlows gives your application one clean messaging layer for customer notifications, OTP verification, WhatsApp delivery, SMS fallback, and audit logs.

The goal is simple:

* Use WhatsApp when it is the best channel.
* Use SMS when the phone is not reachable on WhatsApp or when SMS is required.
* Use OTP endpoints when your app needs secure phone verification.
* Log every attempt so your team knows what happened.

## Products

| Product               | Use it for                                                              |
| --------------------- | ----------------------------------------------------------------------- |
| Unified Messaging API | WhatsApp-first delivery, SMS fallback, and OTP across selected channels |
| SMS REST API          | Transactional text messages                                             |
| OTP API               | Generate, deliver, and verify one-time codes                            |
| WhatsApp QR API       | WhatsApp messages from connected QR devices                             |
| Meta WhatsApp API     | WhatsApp Cloud API messages and templates                               |

## Base URL

```text theme={null}
{{baseUrl}} = https://your-karflows-domain.com
```

All examples use `{{baseUrl}}` so your docs keep working if the KarFlows domain changes. Replace it with the domain where your KarFlows app is installed.

## Provider Privacy

KarFlows is the API your customers integrate with. Provider details are managed inside KarFlows and are not exposed through customer APIs.