> ## 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.

# Reply.io - How do I link my account?

# Overview

To authenticate with Reply.io, you will need:

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

This guide will walk you through finding your **API Key** within Reply.io.

### Prerequisites:

* You must have a Reply.io account.

### Instructions:

#### Step 1: Finding Your API Key

1. Log in to your [Reply.io account](https://app.reply.io) and navigate to **Settings > API Key**.
2. Your API key is displayed on this page. Click **Copy** to copy it to your clipboard.

<img src="https://mintcdn.com/nango/5GheEfvTg-2T7M67/api-integrations/reply-io/api_key.png?fit=max&auto=format&n=5GheEfvTg-2T7M67&q=85&s=93f94a9db83c35ecfb9711bfc0a145c9" width="1916" height="825" data-path="api-integrations/reply-io/api_key.png" />

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

Once you have your **API Key**:

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

<img src="https://mintcdn.com/nango/5GheEfvTg-2T7M67/api-integrations/reply-io/form.png?fit=max&auto=format&n=5GheEfvTg-2T7M67&q=85&s=16a828e13a0e8d75566d51c27e3dffcb" style={{maxWidth: "450px" }} width="499" height="700" data-path="api-integrations/reply-io/form.png" />

You are now connected to Reply.io.