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Auth0 Passwordless — Passwordless Authentication with Auth0

DodaTech Updated 2026-06-28 1 min read

In this tutorial, you'll learn about Auth0 Passwordless. We cover key concepts, practical examples, and best practices to help you understand and apply this topic effectively.

Passwordless authentication improves user experience and security by eliminating password-related vulnerabilities.

// Passwordless connection setup
const passwordlessConnection = await auth0.connections.create({
  name: 'passwordless-email',
  strategy: 'email',
  options: {
    email: {
      signIn: { enabled: true },
      signUp: { enabled: true },
      codeLength: 6,
      expiration: 300
    },
    disable_signup: false,
    brute_force_protection: true
  }
});

// Initiate passwordless login via API
const response = await axios.post(`https://{tenant}.auth0.com/passwordless/start`, {
  client_id: process.env.AUTH0_CLIENT_ID,
  client_secret: process.env.AUTH0_CLIENT_SECRET,
  connection: 'email',
  email: 'user@example.com',
  send: 'code'
});

// Verify code
const tokenResponse = await axios.post(`https://{tenant}.auth0.com/oauth/token`, {
  grant_type: 'http://auth0.com/oauth/grant-type/passwordless/otp',
  client_id: process.env.AUTH0_CLIENT_ID,
  client_secret: process.env.AUTH0_CLIENT_SECRET,
  username: 'user@example.com',
  otp: '123456',
  realm: 'email',
  scope: 'openid profile email'
});

Passwordless authentication can increase conversion rates by removing password friction during sign-up.

← Previous Auth0 Single Sign On — Enterprise SSO with Auth0 Next → Auth0 Universal Login — Customizing Auth0 Universal Login Pages

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