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Use AI to integrate Auth0

If you use an AI coding assistant like Claude Code, Cursor, or GitHub Copilot, you can add Auth0 authentication automatically in minutes using agent skills.Install:
npx skills add auth0/agent-skills --skill auth0-quickstart --skill auth0-angular
Then ask your AI assistant:
Add Auth0 authentication to my Angular app
Your AI assistant will automatically create your Auth0 application, fetch credentials, install @auth0/auth0-angular, create route guards and HTTP interceptors, and configure your environment. Full agent skills documentation →
Prerequisites: Before you begin, ensure you have the following installed:Verify installation: node --version && npm --versionAngular Version Compatibility: This quickstart works with Angular 18.x and newer using the Angular CLI. For older versions of Angular, use the Auth0 Angular SDK v2.

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Get Started

This quickstart demonstrates how to add Auth0 authentication to an Angular application. You’ll build a secure single-page app with login and logout functionality using Angular’s dependency injection system and the Auth0 Angular SDK.
1

Create a new project

Create a new Angular project for this Quickstart
npx @angular/cli@latest new auth0-angular --routing=true --style=css
Open the project
cd auth0-angular
2

Install the Auth0 Angular SDK

npm install @auth0/auth0-angular && npm install
3

Setup your Auth0 App

Next up, you need to create a new app on your Auth0 tenant and add the environment variables to your project.You have three options to set up your Auth0 app: use the Quick Setup tool (recommended), run a CLI command, or configure manually via the Dashboard:
4

Configure the Auth0 module

The CLI script has already created your environment file. Now configure the Auth0 module in your app:
src/main.ts
import { bootstrapApplication } from '@angular/platform-browser';
import { appConfig } from './app/app.config';
import { provideAuth0 } from '@auth0/auth0-angular';
import { mergeApplicationConfig } from '@angular/core';
import { environment } from './environments/environment';
import { AppComponent } from './app/app.component';

const auth0Config = mergeApplicationConfig(appConfig, {
  providers: [
    provideAuth0({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: {
        redirect_uri: window.location.origin
      }
    })
  ]
});

bootstrapApplication(AppComponent, auth0Config).catch((err) =>
  console.error(err)
);
If you set up your Auth0 app manually via the dashboard, create src/environments/environment.ts with your domain and client ID from the dashboard.
5

Create Login, Logout and Profile Components

Create the component files manually for better control
mkdir -p src/app/components && touch src/app/components/login-button.component.ts && touch src/app/components/logout-button.component.ts && touch src/app/components/profile.component.ts
Add the following code to each component:Now update the main App Component and add styling:
Replace the contents of src/app/app.component.ts:
src/app/app.ts
import { Component, inject } from '@angular/core';
import { AuthService } from '@auth0/auth0-angular';
import { CommonModule } from '@angular/common';
import { LoginButtonComponent } from './components/login-button.component';
import { LogoutButtonComponent } from './components/logout-button.component';
import { ProfileComponent } from './components/profile.component';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [CommonModule, LoginButtonComponent, LogoutButtonComponent, ProfileComponent],
  template: `
    <div class="app-container">
      <!-- Loading State -->
      @if (auth.isLoading$ | async) {
        <div class="loading-state">
          <div class="loading-text">Loading...</div>
        </div>
      }

      <!-- Error State -->
      @if (auth.error$ | async; as error) {
        <div class="error-state">
          <div class="error-title">Oops!</div>
          <div class="error-message">Something went wrong</div>
          <div class="error-sub-message">{{ error.message }}</div>
        </div>
      }

      <!-- Main Content -->
      @if (!(auth.isLoading$ | async) && !(auth.error$ | async)) {
        <div class="main-card-wrapper">
          <img 
            src="https://cdn.auth0.com/quantum-assets/dist/latest/logos/auth0/auth0-lockup-en-ondark.png" 
            alt="Auth0 Logo" 
            class="auth0-logo"
          />
          <h1 class="main-title">Welcome to Sample0</h1>
          
          <!-- Authenticated State -->
          @if (auth.isAuthenticated$ | async) {
            <div class="logged-in-section">
              <div class="logged-in-message">✅ Successfully authenticated!</div>
              <h2 class="profile-section-title">Your Profile</h2>
              <div class="profile-card">
                <app-profile />
              </div>
              <app-logout-button />
            </div>
          } @else {
            <!-- Unauthenticated State -->
            <div class="action-card">
              <p class="action-text">Get started by signing in to your account</p>
              <app-login-button />
            </div>
          }
        </div>
      }
    </div>
  `,
  styles: []
})
export class AppComponent {
  protected auth = inject(AuthService);
}
6

Run your app

ng serve
If port 4200 is in use, run: ng serve --port 4201 and update your Auth0 app’s callback URLs to http://localhost:4201
CheckpointYou should now have a fully functional Auth0 login page running on your localhost

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Advanced Usage

If you prefer using NgModules instead of standalone components, here’s how to configure the SDK:
src/app/app.module.ts
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AuthModule } from '@auth0/auth0-angular';
import { environment } from '../environments/environment';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    AppRoutingModule,
    AuthModule.forRoot({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: {
        redirect_uri: window.location.origin
      }
    })
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }
Use the modern functional guard to protect routes that require authentication:
src/app/app.routes.ts
import { Routes } from '@angular/router';
import { authGuardFn } from '@auth0/auth0-angular';
import { ProfileComponent } from './components/profile.component';

export const routes: Routes = [
  {
    path: 'profile',
    component: ProfileComponent,
    canActivate: [authGuardFn]
  },
  {
    path: '',
    redirectTo: '/profile',
    pathMatch: 'full'
  }
];
Then configure routing in your main.ts:
src/main.ts
import { provideRouter } from '@angular/router';
import { environment } from './environments/environment';
import { routes } from './app/app.routes';

const auth0Config = mergeApplicationConfig(appConfig, {
  providers: [
    provideRouter(routes),
    provideAuth0({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: {
        redirect_uri: window.location.origin
      }
    })
  ]
});
Configure the HTTP interceptor to automatically attach tokens to API calls:
src/main.ts
import { provideHttpClient, withInterceptors } from '@angular/common/http';
import { authHttpInterceptorFn } from '@auth0/auth0-angular';
import { environment } from './environments/environment';

const auth0Config = mergeApplicationConfig(appConfig, {
  providers: [
    provideAuth0({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: {
        redirect_uri: window.location.origin,
        audience: 'YOUR_API_IDENTIFIER'
      },
      httpInterceptor: {
        allowedList: [
          'http://localhost:3001/api/*'
        ]
      }
    }),
    provideHttpClient(
      withInterceptors([authHttpInterceptorFn])
    )
  ]
});