# Auth0

[Source Code](https://github.com/nuxt-community/auth-module/blob/master/lib/providers/auth0.js)

[Auth0](https://auth0.com) is a great authentication-as-a-service platform for free!

A [live demo](https://auth0.nuxtjs.org) is available as well as the [source](https://github.com/nuxt/example-auth0).

## Usage

```javascript
auth: {
  strategies: {
    auth0: {
      domain: 'domain.auth0.com',
      client_id: '....',
      audience: 'https://my-api-domain.com/'
    }
  }
}
```

Anywhere in your application logic:

```javascript
this.$auth.loginWith('auth0')
```

User will be redirected to a page like this:

![](https://cdn2.auth0.com/docs/media/articles/web/hosted-login.png)

💁 This provider is based on [oauth2 scheme](https://nuxt-community.gitbook.io/auth/docs/schemes/oauth2) and supports all scheme options.

## Obtaining `client_id`, `domain`, and `audience`

`client_id` and `domain` are **REQUIRED**. Your application needs some details about this client to communicate with Auth0.

`audience` is required *unless* you've explicitly set a default audience [on your Auth0 tenant](https://manage.auth0.com/#/tenant).

You can get your `client_id` and `domain` the Settings section for your client in the [Auth0 API dashboard](https://manage.auth0.com/#/applications). Your audience is defined on your [client's API](https://manage.auth0.com/#/apis).

![](https://cdn2.auth0.com/docs/media/articles/dashboard/client_settings.png)

## Logout with new Auth0 tenants

Auth0 tenants created in 2018 and earlier had an optional tenant setting `Enable Seamless SSO`. This setting is automatically enabled for new tenants and cannot be disabled.

If enabled and a user logs out and logs back in a short while later, they will not need to re-enter their credentials. They'll be logged in automatically.

You can force Auth0 to present the login page:

* Go to into the `Tenant Settings` > `Advanced`
* In `Allowed Logout URLs` enter the allowed URL(s) you can redirect to, such as `http://localhost:3000`

Wherever you have a logout feature do two things: 1. run the logout command

```javascript
this.$auth.logout()
```

1. redirect the user to the Auth0 logout URL along with a `returnTo` parameter

   ```
   https://mytenant.auth0.com/v2/logout?returnTo=http%3A%2F%2Flocalhost:3000
   ```