# Metric Billing

### Docker n8n module **[WHMCS](https://puqcloud.com/link.php?id=77)**
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## Overview

The Docker n8n WHMCS module supports metric billing through the standard WHMCS usage-based billing mechanism.

## Available Metrics

| Metric | Description |
|--------|-------------|
| **Traffic IN (GB)** | Incoming network traffic in gigabytes |
| **Traffic OUT (GB)** | Outgoing network traffic in gigabytes |

## Configuration

To set up metric billing, follow the standard WHMCS usage-based billing configuration:

[https://docs.whmcs.com/products/configuration-options/usage-billing/](https://docs.whmcs.com/products/configuration-options/usage-billing/)

![Metric billing](https://doc.puq.info/uploads/images/gallery/2026-03/embedded-image-crua6op5.png)


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