# auth

The authentication service and parameters. For example:

```
{
    "auth": {
        "service": "appmixer:google",
        "scope": [
            "https://mail.google.com/",
            "https://www.googleapis.com/auth/gmail.compose",
            "https://www.googleapis.com/auth/gmail.send"
        ]
    }
}
```

The `auth.service` identifies the [authentication module](/6.0/6.3/building-connectors/authentication.md) that will be used to authenticate the user to the service that the component uses. It must have the following format: **\[vendor]:\[service]**. The Appmixer engine looks up the `auth.js` file under that vendor and service category. `auth.scope` provides additional parameters to the authentication module. See the Authentication section for more details.

When `auth` is defined, the component will have a section in the Designer UI inspector requiring the user to select from existing accounts or connect a new account. Only after an account is selected the user can continue configuring other properties of the component.

![Connected Accounts](/files/-L_wa-u3yA7oI5VjxcFw)


---

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