> ## 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.

# UniOne - How do I link my account?

## Overview

To authenticate with UniOne, you need:

1. **Region** — the UniOne host your account was registered at.
2. **API Key** — your UniOne account API key or a project API key.

This guide will show you how to find both.

### Prerequisites

* A UniOne account. The Free plan needs no credit card. If you don't have an account, [sign up](https://cp.unione.io/en/user/registration/).

### Step 1: Find your region

1. Sign in to the [UniOne control panel](https://cp.unione.io). You are redirected to the host your account was registered at, for example `eu1.unione.io` or `us1.unione.io`.
2. In the Connect UI, select that host as your **Region**. `api.unione.io` is UniOne's preferred host; if the connection fails with it, select `eu1.unione.io` or `us1.unione.io`, whichever appears in your browser's address bar.

### Step 2: Copy your API key

1. In the control panel, click **API key** in the top bar (or go to **Settings** -> **API key**).
2. Make sure the **API access** toggle is on.
3. Copy the account API key from the key field. Only click **Generate API key** if you want to replace the current key.

![UniOne API key page with the API key field, the Generate API key button and the API access toggle](https://mintcdn.com/nango/WtBgFZwYqdGQedpv/api-integrations/unione/account_api_key.png?fit=max\&auto=format\&n=WtBgFZwYqdGQedpv\&q=85\&s=24867d5bf7bfbe3ef7e52c018b79ef49)

To limit the connection to a single project, use a project API key instead: open the **Projects** page in the control panel and copy the project's API key. Project methods are disabled by default; contact UniOne support to enable them.

### Step 3: Enter your region and API key in the Connect UI

1. Open the form where you need to authenticate with UniOne.
2. Select your **Region** and enter your API key in the **API Key** field.
3. Submit the form, and you should be successfully authenticated.

![UniOne Connect UI form with the Region and API Key fields](https://mintcdn.com/nango/WtBgFZwYqdGQedpv/api-integrations/unione/form.png?fit=max\&auto=format\&n=WtBgFZwYqdGQedpv\&q=85\&s=348e90e0b28c3055b8ea7541ec6622b9)

You are now connected to UniOne.


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