> ## 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.

# Ironclad - How do I link my account?

# Overview

To authenticate with Ironclad, you need:

1. **Subdomain** - The unique subdomain associated with your Ironclad environment.

This guide will walk you through obtaining your **Subdomain**.

### Prerequisites

* You must have an Ironclad account.

### Instructions

#### Step 1: Finding Your Subdomain

Ironclad operates across multiple environments, each with its own base URL:

* **Production (NA)**: `https://na1.ironcladapp.com`
* **Production (EU)**: `https://eu1.ironcladapp.com`
* **Demo**: `https://demo.ironcladapp.com`

The available Ironclad environment subdomains are: `na1`, `eu1`, and `demo`.

#### Step 2: Enter Your Credentials in the Connect UI

Once you have your **Ironclad Environment Subdomain**:

1. Open the form where you need to authenticate with Ironclad.
2. Enter your **Ironclad Environment Subdomain** in the corresponding field.
3. Submit the form to complete authentication.

You are now connected to Ironclad.