MCPInstall

auth0-angular

by auth0 OfficialFrontend & Design

Use when adding Auth0 login, logout, route guards, or HTTP interceptors to an Angular application. Integrates @auth0/auth0-angular for SPAs — use even if the user says "protect my Angular routes" or "add authentication to Angular" without naming the SDK.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/auth0/agent-skills --skill auth0-angular
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads auth0-angular automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

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 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: `
    <div *ngIf="auth.isLoading$ | async; else loaded">
      <p>Loading...</p>
    </div>

    <ng-template #loaded>
      <ng-container *ngIf="auth.isAuthenticated$ | async; else loggedOut">
        <div *ngIf="auth.user$ | async as user">
          <img [src]="user.picture" [alt]="user.name" />
          <h2>Welcome, {{ user.name }}!</h2>
          <button (click)="logout()">Logout</button>
        </div>
      </ng-container>

      <ng-template #loggedOut">
        <button (click)="login()">Login</button>
      </ng-template>
    </ng-template>
  `
})
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 - Automated setup scripts (Bash/PowerShell), CLI commands, manual configuration
  • Integration Guide - Protected routes with guards, HTTP interceptors, error handling
  • API Reference - Complete SDK API, configuration options, services reference, testing strategies

Common Mistakes

MistakeFix
Forgot to add redirect URI in Auth0 DashboardAdd your application URL (e.g., http://localhost:4200, https://app.example.com) to Allowed Callback URLs in Auth0 Dashboard
Not configuring AuthModule properlyMust call AuthModule.forRoot() in NgModule or provideAuth0() in standalone config
Accessing auth before initializationUse isLoading$ observable to wait for SDK initialization
Storing tokens manuallyNever manually store tokens - SDK handles secure storage automatically
No token sent to APIUse either authHttpInterceptorFn for automatic token attachment, or getAccessTokenSilently() for manual control — see Integration Guide
Route guard not protecting routesApply 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
  • Calling a protected API → Integration Guide
  • Error handling → Integration Guide

References

FAQ

What does the auth0-angular skill do?

Use when adding Auth0 login, logout, route guards, or HTTP interceptors to an Angular application. Integrates @auth0/auth0-angular for SPAs — use even if the user says "protect my Angular routes" or "add authentication to Angular" without naming the SDK.

How do I install auth0-angular?

Run npx skills add https://github.com/auth0/agent-skills --skill auth0-angular in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/auth0-angular/ (personal) or .claude/skills/auth0-angular/ (project).

Which AI agents can use auth0-angular?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is auth0-angular safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains auth0-angular?

It is published by auth0 in auth0/agent-skills, and it is an official skill from the maker of the technology it covers. It has 762 recorded installs.

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