Using screen_hint Parameter at /samlp Endpoint

Last Updated: Sep 10, 2025

Overview

With the New Universal Login, it is possible to include a screen_hint=signup parameter in the /authorize request to have the Universal Login page load on the sign-up screen. When Auth0 is acting as the IdP in SAML flows, the same screen_hint parameter is not automatically sent to the sign-up screen when the Universal Login page loads.

Applies To

New Universal Login
/samlp Endpoint

Cause

While Okta docs state that the screen_hint=signup parameter is supported in requests to the /authorize endpoint, the same is not true for the /samlp endpoint, which is used when Auth0 is the IdP.

Solution

While this is not supported at the moment, Auth0 created a backlog item to potentially address it.

Related References

Universal Login Experience - Signup