auth0-quickstart

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Framework

Detection

Skill to Use

React (Vite/CRA)

"react" in package.json, no Next.js

auth0-react

Next.js

"next" in package.json

auth0-nextjs

Vue.js

"vue" in package.json, no Nuxt

auth0-vue

Nuxt

"nuxt" in package.json

auth0-nuxt

Angular

angular.json exists or "@angular/core"

auth0-angular

Express.js

"express" in package.json

auth0-express

Fastify (web app)

"fastify" in package.json, has @fastify/view

auth0-fastify

Fastify (API)

"fastify" in package.json, no view engine

auth0-fastify-api

React Native

"react-native" or "expo" in package.json

auth0-react-native

Flask

"flask" in requirements.txt, Pipfile, or pyproject.toml

auth0-flask

Node.js API

"express-oauth2-jwt-bearer" in package.json

express-oauth2-jwt-bearer

Don't see your framework? See Tier 2 Frameworks below.

Step 2: Auth0 Account Setup

Install Auth0 CLI

macOS/Linux:

brew install auth0/auth0-cli/auth0

Windows:

scoop install auth0

# Or: choco install auth0-cli

Full installation guide: See CLI Reference

Login to Auth0

auth0 login

This opens your browser to authenticate with Auth0.

Step 3: Create Auth0 Application

Choose application type based on your framework:

Single Page Applications (React, Vue, Angular):

auth0 apps create --name "My App" --type spa \

  --auth-method None \

  --callbacks "http://localhost:3000" \

  --logout-urls "http://localhost:3000" \

  --metadata "created_by=agent_skills"

Regular Web Apps (Next.js, Nuxt, Express, Fastify):

auth0 apps create --name "My App" --type regular \

  --callbacks "http://localhost:3000/api/auth/callback" \

  --logout-urls "http://localhost:3000" \

  --metadata "created_by=agent_skills"

Native Apps (React Native):

auth0 apps create --name "My App" --type native \

  --auth-method None \

  --callbacks "myapp://callback" \

  --logout-urls "myapp://logout" \

  --metadata "created_by=agent_skills"

Get your credentials:

auth0 apps list          # Find your app

auth0 apps show <app-id> # Get client ID and secret

More CLI commands: See CLI Reference

Apply Branding (Optional)

After creating your application, apply branding so the Auth0 Universal Login page matches your app:

auth0 ul update \

  --accent "#YOUR_BRAND_COLOR" \

  --background "#YOUR_BACKGROUND_COLOR" \

  --logo "https://your-app.com/logo.png" \

  --favicon "https://your-app.com/favicon.ico"

This ensures users see your app's branding on the login screen instead of the default Auth0 branding. You can also use the acul-screen-generator skill for full custom login screen design.

Step 4: Use Framework-Specific Skill

Based on your framework detection, use the appropriate skill:

Tier 1 Frameworks (Dedicated Skills)

Frontend:

• **auth0-react** - React SPAs (Vite, Create React App)

• **auth0-nextjs** - Next.js (App Router and Pages Router)

• **auth0-vue** - Vue.js 3 applications

• **auth0-nuxt** - Nuxt 3/4 applications

• **auth0-angular** - Angular 12+ applications

Backend:

• **auth0-express** - Express.js web applications

• **auth0-flask** - Flask web applications

• **auth0-fastify** - Fastify web applications

• **auth0-fastify-api** - Fastify API authentication

• **express-oauth2-jwt-bearer** - Node.js/Express API JWT Bearer validation

Mobile:

• **auth0-react-native** - React Native and Expo (iOS/Android)

Tier 2 Frameworks (Use Auth0 Docs)

Not yet available as separate skills. Use Auth0 documentation:

Frontend:

• SvelteKit

• Remix

Backend:

• FastAPI (Python)

• Django (Python)

• Rails (Ruby)

• Laravel (PHP)

• Go

• ASP.NET Core

• Spring Boot

Mobile:

• iOS (Swift)

• Android (Kotlin)

• Flutter

Migration from Other Providers

Migrating from another auth provider? Use the **auth0-migration** skill.

The migration skill covers:

• User export from Firebase, Cognito, Supabase, Clerk, etc.

• Bulk import to Auth0

• Code migration patterns (before/after examples)

• JWT validation updates

• Gradual migration strategies

Reference Documentation

Environment Variables

Framework-specific environment variable setup:

• Vite, Create React App, Angular

• Next.js, Express

• React Native, Expo

Auth0 Concepts

Core concepts and troubleshooting:

• Application Types

• Key Terms

• OAuth Flows

• Troubleshooting

• Security Best Practices

CLI Commands

Complete Auth0 CLI reference:

• CLI Installation

• Creating Applications

• User Management

• Testing & Debugging

• Command Quick Reference

Common Mistakes

Mistake

Fix

Wrong application type

SPAs need "Single Page Application", server apps need "Regular Web Application", mobile needs "Native"

Callback URL not configured

Add your app's callback URL to Allowed Callback URLs in Auth0 Dashboard

Using wrong credentials

Client Secret only needed for Regular Web Apps, not SPAs

Hardcoding credentials in code

Always use environment variables, never commit secrets to git

Not testing locally first

Set up localhost URLs in Auth0 before deploying to production

Mixing application types

Don't use SPA SDK for server-side apps or vice versa

Related Skills

Core Integration

• auth0-migration - Migrate from other auth providers

SDK Skills

• auth0-spa-js - SPA integration

• auth0-react - React SPA integration

• auth0-nextjs - Next.js integration

• auth0-vue - Vue.js integration

• auth0-nuxt - Nuxt 3/4 integration

• auth0-angular - Angular integration

• auth0-express - Express.js integration

• auth0-flask - Flask web app integration

• auth0-fastify - Fastify web app integration

• auth0-fastify-api - Fastify API integration

• express-oauth2-jwt-bearer - Node.js/Express API JWT Bearer validation

• auth0-react-native - React Native CLI (bare workflow) integration

• auth0-expo - Expo (managed workflow) integration

• auth0-android - Android (Kotlin/Java) integration

• auth0-swift - iOS/macOS (Swift) integration

• auth0-fastapi-api - FastAPI API authentication

• auth0-aspnetcore-api - ASP.NET Core API authentication

Advanced Features

• auth0-mfa - Multi-Factor Authentication

References

• Auth0 Documentation

• Auth0 Quickstart Guides

• Auth0 CLI Documentation

• Auth0 Community Forum