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

# Postscript - How do I link my account?

# Overview

To authenticate with Postscript, you need:

1. **Private API Key** - A key that grants secure access to the Postscript API, enabling authorized applications to interact with Postscript resources and services.

This guide will walk you through finding your **Private API Key** in Postscript.

### Prerequisites

* An active Postscript account.

### Instructions

#### Step 1: Finding your Private API Key

1. Log in to Postscript, select your shop name in the side menu, then select **API**.
2. If you don't have a key yet, click **Create Security Key Pair** and confirm.
3. Under the **Private Key** column, click **Show** and copy the value.

<Note>
  Use the **Private Key** (starts with `sk_`), not the Public Key (starts with `pk_`) — the Public Key doesn't authenticate requests.
</Note>

#### Step 2: Enter credentials in the Connect UI

Once you have your **Private API Key**:

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

<img src="https://mintcdn.com/nango-marcin-get-deployments-docs/eu3j2ssM3lzaJPJS/api-integrations/postscript/form.png?fit=max&auto=format&n=eu3j2ssM3lzaJPJS&q=85&s=a504be6e0967900451fe1ca471a5828b" style={{maxWidth: "450px" }} width="996" height="1222" data-path="api-integrations/postscript/form.png" />

You are now connected to Postscript.