# Linear credentials

You can use these credentials to authenticate the following nodes:

* [Linear Trigger](#)
* [Linear](/guides/automated-workflows/integrations/builtin/app-nodes/ts-wf-nodes-base.linear)


## Prerequisites

Create a [Linear](https://linear.app/) account.

## Supported authentication methods

- API key
- OAuth2


## Using API key

To configure this credential, you'll need:

- A personal **API Key**: Create an API key in your [**Settings > API**](https://linear.app/ts-wf/settings/api). Refer to the [Linear Personal API keys documentation](https://developers.linear.app/docs/graphql/working-with-the-graphql-api#personal-api-keys) for more information.


## Using OAuth2

To configure this credential, you'll need:

- A **Client ID**: Generated when you create a new OAuth2 application.
- A **Client Secret**: Generated when you create a new OAuth2 application.
- Select the **Actor**: The actor defines how the OAuth2 application should create issues, comments and other changes. Options include:
  - **User** (Linear's default): The application creates resources as the authorizing user. Use this option if you want each user to do their own authentication.
  - **Application**: The application creates resources as itself. Use this option if you have only one user (like an admin) authorizing the application.


Refer to the [Linear OAuth2 Authentication documentation](https://developers.linear.app/docs/oauth/authentication) for more detailed instructions and explanations. Use the Mosaic Workflows **OAuth Redirect URL** as the **Redirect callback URL** in your Linear OAuth2 application.