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Using Auth0 for Application Authentication

Learn how to integrate Auth0 as your application's identity provider to manage user authentication and authorization.

Overview​

Auth0 is a managed identity platform that can serve as your application's OIDC provider, handling user authentication, social logins, and enterprise SSO.

Coming Soon​

This guide is under development. Topics will include:

  • Creating an Auth0 account and tenant
  • Configuring Auth0 application
  • Integrating Auth0 with your API
  • Validating Auth0 tokens
  • Role-based access control (RBAC)
  • Custom claims and rules
  • Social login integration
  • Multi-tenancy with Auth0

Use Cases​

1. SaaS Application Authentication​

Use Auth0 to handle user authentication for your SaaS product:

  • Email/password authentication
  • Social logins (Google, GitHub, etc.)
  • Multi-factor authentication (MFA)
  • User management dashboard

2. API Authorization​

Protect your API with Auth0-issued access tokens:

  • Validate JWT tokens from Auth0
  • Enforce role-based permissions
  • Rate limiting by user
  • Audit logging

3. Enterprise SSO​

Enable enterprise customers to use their existing identity providers:

  • SAML connections
  • Azure AD / Okta integration
  • Custom OIDC providers
  • Just-in-time provisioning

Quick Example​

// Verify Auth0 token in your API
const jwksClient = require('jwks-rsa');
const jwt = require('jsonwebtoken');

const client = jwksClient({
  jwksUri: 'https://YOUR_DOMAIN.auth0.com/.well-known/jwks.json'
});

function getKey(header, callback) {
  client.getSigningKey(header.kid, (err, key) => {
    callback(null, key.publicKey || key.rsaPublicKey);
  });
}

jwt.verify(token, getKey, {
  audience: 'https://api.yourservice.com',
  issuer: 'https://YOUR_DOMAIN.auth0.com/',
  algorithms: ['RS256']
}, (err, decoded) => {
  if (err) throw err;
  console.log('User authenticated:', decoded);
});

Resources​

Contributing​

Want to help complete this guide? Contribute on GitHub.