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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

With your environment file in place from the previous step, 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 { App } from './app/app';

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

bootstrapApplication(App, 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.If you’re using Angular 18 or 19, the CLI generates app.component.ts and exports AppComponent instead of App. Change lines 6 and 20 to match:
import { AppComponent } from './app/app.component';
// ...
bootstrapApplication(AppComponent, auth0Config).catch((err) => console.error(err));
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.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 App {
  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 created your project with --standalone=false or prefer using NgModules instead of standalone components, here’s how to configure the SDK with Angular 20+ CLI-generated projects:
src/main.ts
import { platformBrowser } from '@angular/platform-browser';
import { AppModule } from './app/app-module';

platformBrowser().bootstrapModule(AppModule)
  .catch((err) => console.error(err));
src/app/app-module.ts
import { NgModule, provideBrowserGlobalErrorListeners } 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 { App } from './app';

@NgModule({
  declarations: [App],
  imports: [
    BrowserModule,
    AppRoutingModule,
    AuthModule.forRoot({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: {
        redirect_uri: window.location.origin
      }
    })
  ],
  providers: [provideBrowserGlobalErrorListeners()],
  bootstrap: [App]
})
export class AppModule { }
If you’re using Angular 18 or 19, your generated files are typically app.component.ts, app.module.ts, and app-routing.module.ts, and main.ts typically uses platformBrowserDynamic instead.In all cases, NgModule projects bootstrap via bootstrapModule() rather than the bootstrapApplication() approach shown in the main quickstart.
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])
    )
  ]
});