Branded Auth Links Infrastructure

Continue securely in your App

This domain hosts secure links for sign-in. Open your app from the store to finish on your phone.

Get it on Google Play Download on the App Store

How Deep-Link Auth Works

Seamlessly bridge email magic links into native mobile app authentication handlers.

Email Link Dispatch

Firebase sends a custom sign-in link with the token on your custom domain (auth.yourdomain.com).

https://auth.app.com/finishSignUp?oobCode=XYZ...

Domain Verification

Mobile OS verifies domain ownership automatically via hosted .well-known manifests.

GET /.well-known/assetlinks.json → 200 OK

Native App Launch

The mobile OS intercepts the HTTPS URL and routes the payload directly to your native app listener.

Intent: ACTION_VIEW (com.example.app)

Hosted Endpoints & Configuration Inspector

Android App Links verification manifest specifying SHA-256 fingerprints.

[
  {
    "relation": ["delegate_permission/common.handle_all_urls"],
    "target": {
      "namespace": "android_app",
      "package_name": "com.example.app",
      "sha256_cert_fingerprints": [
        "14:6D:E9:7C:15:35:10:97:5C:30:17:80:C6:67:E6:AA:E1:98:C8"
      ]
    }
  }
]