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Welcome to Muzl

Passwordless OAuth with passkeys. Privacy-preserving identifiers.

Documentation

START HERE

Quick Start

Communicate with your users securely without email. Users see messages grouped by app in their inbox.

Account Linking

Communicate with your users securely without email. Users see messages grouped by app in their inbox.

IdP Integration

Communicate with your users securely without email. Users see messages grouped by app in their inbox.

Message Service Provider (MSP)

Communicate with your users securely without email. Users see messages grouped by app in their inbox.

What is Muzl?

Muzl is a privacy-preserving OAuth 2.1 identity provider that uses passkeys instead of passwords.

Passwordless authentication (Face ID, Touch ID, security keys)
Privacy-preserving (each app gets unique user IDs)
Standard OAuth 2.1 (works with any OAuth library)
No passwords to manage

How It Works

  1. User clicks "Sign in with Muzl" in your app
  2. User authenticates with passkey (biometric/PIN)
  3. Your app receives a unique Service ID for that user
  4. User is logged in

Service IDs are unique per user per app - the same user gets different IDs for different apps, preventing cross-site tracking and removing the single point of failure.