> ## Documentation Index
> Fetch the complete documentation index at: https://nango-wari-migrated-bigcommerce-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# PRTG Classic - How do I link my account?
# Overview
To authenticate with PRTG's classic HTTP API, you will need:
1. **Instance Host** - The host of your PRTG instance.
2. **API Key** - A key that grants Nango permission to access the classic PRTG HTTP API.
This guide will walk you through finding both values in PRTG.
This integration is for the classic PRTG HTTP API with `apitoken` query authentication, not PRTG API v2.
### Prerequisites:
* You must have access to a PRTG user account that can create API keys.
### Instructions:
#### Step 1: Finding Your Instance Host
1. Log in to your PRTG instance.
2. Copy the host from your browser address bar, for example `monitor.example.com`.
#### Step 2: Finding Your API Key
1. In PRTG, go to **Setup** -> **Account Settings** -> **API Keys**.
2. Click **+** and select **Add API Key**.
3. Fill in the key details, set the required access level, and copy the generated API key.
#### Step 3: Enter credentials in the Connect UI
Once you have your **Instance Host** and **API Key**:
1. Open the form where you need to authenticate with PRTG.
2. Enter your **Instance Host** and **API Key** in their designated fields.
3. Submit the form, and you should be successfully authenticated.
You are now connected to PRTG.