Web Messaging widget not passing custom attributes to guest session

NICE CXone API & Integrations
1

Trying to push custom attributes from our web app into the Genesys Cloud Web Messaging widget before a chat starts. The widget loads fine, but the attributes aren’t showing up in the conversation or the guest profile in PureCloud. We’re using the standard gcWebMessaging config object.

  • React 18 app
  • Genesys Cloud Web Messaging SDK v2.4.1
  • Passing guestAttributes in the init callback
  • Logged in users, using userId and email in the payload

Here’s the config snippet we’re using:

window.gcWebMessaging.init({
 widgetId: 'my-widget-id',
 orgId: 'my-org-id',
 guestAttributes: {
 customerTier: 'gold',
 loyaltyId: '12345'
 }
});

The chat connects, but the supervisor view is blank on those fields. Am I missing a step to actually send them?