Auth0 Support Center - Remove the “auth0|” Prefix of the User ID

Remove the “auth0|” Prefix of the User ID

Sep 10, 2025

Overview

The user ids for Auth0 databases include a prefix "auth0|" that some customers want to avoid sometimes. Is it possible to remove the "auth0|" prefix of the user ids?

Applies To

User ID
App metadata

Cause

The user_id property is guaranteed to be unique (within a tenant) per user in the format {identity provider id}|{unique id in the provider}. There are ways to create users that will accept a user ID, such as via Management API, Bulk Import or a Custom DB, but Auth0 will add the prefix to it anyway: auth0|<user_id>:

Bulk User Import Database Schema and Examples
Identify Users
Create Custom Database Connections
Bulk User Import Database Schema and Examples

Solution

You can add your own prefix into the user id for custom database connections through the scripts of the connection. If you need an identifier in a specific format for integrating with external systems a good approach would be to save it in the user's app_metadata.