> ## Documentation Index
> Fetch the complete documentation index at: https://nango-marcin-nan-6306-mcp-tool-connections-get.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect to Devin

# Overview

To authenticate with Devin, use one of these credentials:

1. **v3 credential (`cog_`)** - A service-user API key or personal access token for the current Devin API.
2. **Legacy v1 API key (`apk_user_`)** - An existing key for the legacy sessions API.

New integrations should use a v3 service-user API key.

### Prerequisites:

* You must have an account with Devin.

### Instructions:

#### Step 1: Finding your API key

For a v3 service-user API key:

1. Open your organization or enterprise settings in Devin.
2. Open **Service users** and create or select a service user.
3. Assign a role with the permissions your integration needs.
4. Generate an API key and copy it immediately. Devin only displays it once.

<img src="https://mintcdn.com/nango-marcin-nan-6306-mcp-tool-connections-get/Q0vFillu3BGFgMuI/integrations/all/devin/service-users.png?fit=max&auto=format&n=Q0vFillu3BGFgMuI&q=85&s=a9e7dd1fa85bb0b1046c53b2335c556d" width="2425" height="1695" data-path="integrations/all/devin/service-users.png" />

For a legacy v1 API key:

1. Log in to your [Devin account](https://app.devin.ai/).
2. Open **API Settings**.
3. Reveal an existing `apk_user_` key or revoke and regenerate it.

See [Devin API authentication](https://docs.devin.ai/api-reference/authentication) for credential and permission details.

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

Once you have your credential:

1. Open the form where you need to authenticate with Devin.
2. Enter the `cog_` or `apk_user_` credential in the API key field.
3. Submit the form, and you should be successfully authenticated.

You are now connected to Devin.