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

# MxToolbox - How do I link my account?

## Overview

To authenticate with MxToolbox, you need:

1. **API Key** — your MxToolbox API key.

This guide will show you how to get it.

### Prerequisites

* An MxToolbox account. [Create a free account](https://mxtoolbox.com/public/registration.aspx?ReturnUrl=/api/api-reference) to receive your API key. Paid plans unlock higher request quotas, network lookups, and full monitor access.

### Step 1: Copy your API key

1. Log in to [MxToolbox](https://mxtoolbox.com).
2. Click your email address in the top right corner to open the account menu, then click **Settings**.
3. Open the **API** tab, or go straight to the [API page](https://mxtoolbox.com/user/api).

![MxToolbox settings with the account menu in the top right corner and the API tab](https://mintcdn.com/nango/SWIW_4uWotjTEEJK/api-integrations/mxtoolbox/open_account_menu.png?fit=max\&auto=format\&n=SWIW_4uWotjTEEJK\&q=85\&s=0c954cccc3b7cdb977be716ab4d9e711)

4. Copy the API key from the field at the top of the page. MxToolbox creates the key for you, so there is nothing to generate.

![MxToolbox API page with the API key field above the daily API usage](https://mintcdn.com/nango/SWIW_4uWotjTEEJK/api-integrations/mxtoolbox/copy_api_key.png?fit=max\&auto=format\&n=SWIW_4uWotjTEEJK\&q=85\&s=9902b4d2d7447266c3ab7b3f84fcf028)

If your key is ever exposed, click **Revoke API Key** on the same page to replace it.

### Step 2: Enter your API key in the Connect UI

1. Open the form where you need to authenticate with MxToolbox.
2. Enter your **API Key** in the designated field.
3. Submit the form, and you should be successfully authenticated.

![MxToolbox connection form in the Nango Connect UI](https://mintcdn.com/nango/SWIW_4uWotjTEEJK/api-integrations/mxtoolbox/form.png?fit=max\&auto=format\&n=SWIW_4uWotjTEEJK\&q=85\&s=ac8f36290d63fba5c48b6167bc040828)

You are now connected to MxToolbox.


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