Auth0 Angular

Auth0 Angular Integration

Add authentication to Angular applications using @auth0/auth0-angular.

---

Prerequisites

• Angular 13+ application
• Auth0 account and application configured
• If you don't have Auth0 set up yet, use the auth0-quickstart skill first

When NOT to Use

• AngularJS (1.x) - This SDK requires Angular 13+, use legacy solutions for AngularJS
• Mobile applications - Use auth0-react-native for React Native or native SDKs for Ionic
• Backend APIs - Use JWT validation middleware for your server language

---

Quick Start Workflow

1. Install SDK

npm install @auth0/auth0-angular

2. Configure Environment

For automated setup with Auth0 CLI, see [Setup Guide](references/setup.md) for complete scripts.

For manual setup:

Update src/environments/environment.ts:

export const environment = {
  production: false,
  auth0: {
    domain: 'your-tenant.auth0.com',
    clientId: 'your-client-id',
    authorizationParams: {
      redirect_uri: window.location.origin
    }
  }
};

3. Configure Auth Module

For standalone components (Angular 14+):

Update src/app/app.config.ts:

import { ApplicationConfig } from '@angular/core';
import { provideAuth0 } from '@auth0/auth0-angular';
import { environment } from '../environments/environment';

export const appConfig: ApplicationConfig = {
  providers: [
    provideAuth0({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: environment.auth0.authorizationParams
    })
  ]
};

For NgModule-based apps:

Update src/app/app.module.ts:

import { AuthModule } from '@auth0/auth0-angular';
import { environment } from '../environments/environment';

@NgModule({
  imports: [
    AuthModule.forRoot({
      domain: environment.auth0.domain,
      clientId: environment.auth0.clientId,
      authorizationParams: environment.auth0.authorizationParams
    })
  ]
})
export class AppModule {}

4. Add Authentication UI

Update src/app/app.component.ts:

import { Component } from '@angular/core';
import { AuthService } from '@auth0/auth0-angular';

@Component({
  selector: 'app-root',
  template: `
    
      Loading...
    

    
      
        
          
          Welcome, {{ user.name }}!
          Logout
        
      

      
        Login
      
    
  `
})
export class AppComponent {
  constructor(public auth: AuthService) {}

  login(): void {
    this.auth.loginWithRedirect();
  }

  logout(): void {
    this.auth.logout({ logoutParams: { returnTo: window.location.origin } });
  }
}

5. Test Authentication

Start your dev server and test the login flow:

ng serve

---

Detailed Documentation

• [Setup Guide](references/setup.md) - Automated setup scripts (Bash/PowerShell), CLI commands, manual configuration
• [Integration Guide](references/integration.md) - Protected routes with guards, HTTP interceptors, error handling
• [API Reference](references/api.md) - Complete SDK API, configuration options, services reference, testing strategies

---

Common Mistakes

| Mistake | Fix | |---------|-----| | Forgot to add redirect URI in Auth0 Dashboard | Add your application URL (e.g., http://localhost:4200, https://app.example.com) to Allowed Callback URLs in Auth0 Dashboard | | Not configuring AuthModule properly | Must call AuthModule.forRoot() in NgModule or provideAuth0() in standalone config | | Accessing auth before initialization | Use isLoading$ observable to wait for SDK initialization | | Storing tokens manually | Never manually store tokens - SDK handles secure storage automatically | | No token sent to API | Use either authHttpInterceptorFn for automatic token attachment, or getAccessTokenSilently() for manual control — see [Integration Guide](references/integration.md#calling-a-protected-api) | | Route guard not protecting routes | Apply AuthGuard (or authGuardFn) to protected routes in routing config |

---

Related Skills

• auth0-quickstart - Basic Auth0 setup
• auth0-migration - Migrate from another auth provider
• auth0-mfa - Add Multi-Factor Authentication
• auth0-cli - Manage Auth0 resources from the terminal

---

Quick Reference

Core Services:

• AuthService - Main authentication service
• isAuthenticated$ - Observable check if user is logged in
• user$ - Observable user profile information
• loginWithRedirect() - Initiate login
• logout() - Log out user
• getAccessTokenSilently() - Get access token manually (alternative to HTTP interceptor)

Common Use Cases:

• Login/Logout buttons → See Step 4 above
• Protected routes with guards → [Integration Guide](references/integration.md#protected-routes)
• Calling a protected API → [Integration Guide](references/integration.md#calling-a-protected-api)
• Error handling → [Integration Guide](references/integration.md#error-handling)

---

References

• Auth0 Angular SDK Documentation
• Auth0 Angular Quickstart
• SDK GitHub Repository

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: auth0
• Source: auth0/agent-skills
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.