> For the complete documentation index, see [llms.txt](https://dev.ucommerce.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.ucommerce.net/readme/backoffice-authentication/auth0-authentication-example.md).

# Auth0 Authentication Example

## Prerequisites

In this example, you will need the following NuGet package

```
Auth0.AspNetCore.Authentication
```

## Setting up Ucommerce Backoffice

Setting up Ucommerce backoffice with Auth0 requires you to set up an external authentication scheme and [external claims mapper](/readme/backoffice-authentication.md#external-claims-mapper) when calling `.AddBackOffice()`

To set up the authentication, use a helper method from the Auth0 package to add all the required services via the [AuthenticationBuilder](https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.authentication.authenticationbuilder?view=aspnetcore-8.0). We highly recommend looking into some of these methods, as they do much of the groundwork to set up OpenID.

```csharp
var ucommerceBuilder = builder.Services
    .AddUcommerce(builder.Configuration)
    .AddBackOffice(securitySettings =>
        {
            securitySettings.AddExternalIdentityProvider<MyExternalClaimsMapper>(
                Auth0Constants.AuthenticationScheme,
                authenticationBuilder =>
                {
                    // Use the AuthenticationBuilder from ASP.NET to set up authentication
                    authenticationBuilder
                        .AddAuth0WebAppAuthentication(Auth0Constants.AuthenticationScheme,
                            auth0Options =>
                            {
                                auth0Options.Domain = builder.Configuration["Auth0:Domain"]!;
                                auth0Options.ClientId = builder.Configuration["Auth0:ClientId"]!;
                                // Ucommerce will handle the cookie session, so we disable it for Auth0
                                auth0Options.SkipCookieMiddleware = true;
                            });
                });
            // Configure Ucommerce to use your scheme from code
            securitySettings.UseExternalIdentityProvider(Auth0Constants.AuthenticationScheme);
        }
    )
    ...
```

{% hint style="info" %}
Remember to create your[ external claims mapper](/readme/backoffice-authentication.md#external-claims-mapper) to map the claims from Auth0 to Ucommerce.
{% endhint %}

## Create your Auth0 application

Create your application in the [Auth0 Dashboard](https://manage.auth0.com/dashboard).

When the application is created, update `appsettings.json` to keep track of `Domain` and `ClientId`.

```json
  "Auth0": {
    "Domain": "{YourDomain}",
    "ClientId": "{YourClientID}"
  },
```

For further guidance on setting up Auth0, we recommend the [Auth0 Quickstart Guide](https://auth0.com/docs/quickstart/webapp/aspnet-core/interactive).

## Related Articles

{% embed url="<https://auth0.com/docs/quickstart/webapp/aspnet-core/interactive>" %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://dev.ucommerce.net/readme/backoffice-authentication/auth0-authentication-example.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.