Auth0 Quickstart Detect your framework and get started with Auth0 authentication. Step 1: Detect Your Framework Run this command to identify your framework:

Check package.json dependencies

cat package.json | grep -E "react|next|vue|angular|express|fastify|@nestjs"

Or check project files

ls -la | grep -E "angular.json|vue.config.js|next.config" Framework Detection Table: 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 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 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 \ --callbacks "http://localhost:3000" \ --logout-urls "http://localhost:3000" \ --metadata "created_by=agent_skills" Regular Web Apps (Next.js, 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 \ --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 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-angular - Angular 12+ applications Backend: auth0-express - Express.js web applications auth0-fastify - Fastify web applications auth0-fastify-api - Fastify API authentication 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 Nuxt.js Backend: Flask (Python) 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