> ## 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.

# Coassemble - How do I link my account?

## Overview

To authenticate with Coassemble, you need:

1. **API Key** — a Production or Test API key from your Coassemble workspace.

This guide will show you how to get it.

### Prerequisites

* A Coassemble workspace with API access. Build, Scale and Partner plans carry the full API, and developers can start a free [Sandbox](https://coassemble.com/pricing). The legacy Flow plan has no API access.
* The Owner, Admin or Developer role in the workspace: only these roles see the Developer console.

### Step 1: Create an API key

1. Sign in to your Coassemble workspace.
2. In the left sidebar, click **Developer**, then open the **API keys** tab.
3. Click **Create key**.

![Coassemble Developer page on the API keys tab with the Create key button highlighted](https://mintcdn.com/nango/OsskBshdjtct8XPs/api-integrations/coassemble/api_keys_tab.png?fit=max\&auto=format\&n=OsskBshdjtct8XPs\&q=85\&s=f728bd714a59cd9daa22ba82c747204c)

4. Enter a **Key name**. Under **Key type**, choose **Production** (the default) for your live integration, or **Test** for building and testing. On a Sandbox workspace the dialog is called **Create a test key** and only creates Test keys.
5. Click **Create key**.

![Coassemble Create a test key dialog with a key name entered and the Create key button highlighted](https://mintcdn.com/nango/OsskBshdjtct8XPs/api-integrations/coassemble/create_key_dialog.png?fit=max\&auto=format\&n=OsskBshdjtct8XPs\&q=85\&s=31df998668a4c17dba89b652eb35b258)

6. Copy the key straight away: it is shown only once. The key starts with `COASSEMBLE:` and already includes your workspace ID. Paste it whole, without adding `Bearer`.

![Coassemble dialog showing the new test key with its copy button highlighted](https://mintcdn.com/nango/OsskBshdjtct8XPs/api-integrations/coassemble/key_created.png?fit=max\&auto=format\&n=OsskBshdjtct8XPs\&q=85\&s=0411a47eba90101302b9be5d0f6bf3d3)

### Step 2: Enter your API key in the Connect UI

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

![Coassemble Connect UI form with the API Key field](https://mintcdn.com/nango/OsskBshdjtct8XPs/api-integrations/coassemble/form.png?fit=max\&auto=format\&n=OsskBshdjtct8XPs\&q=85\&s=f1b0b7080002026f9eff3b81094238f8)

You are now connected to Coassemble.


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