CORS nightmare with Genesys Cloud Web Messaging in Next.js

NICE CXone API & Integrations
1

Hey folks,

Stuck on a CORS error when trying to embed the Genesys Cloud Web Messaging widget in a Next.js 14 app. The widget loads, but the initial handshake to https://api.mypurecloud.com/api/v2/webmessaging/sessions fails with 403 Forbidden in the browser console.

I’ve whitelisted the dev domain in the Genesys org settings, but it’s still bombing. Here’s the init call:

gcWebMessaging.init({
 organizationId: '123',
 widgetId: 'abc',
});

Tried these steps:

  • Verified allowed domains in Genesys Cloud Admin.
  • Checked Next.js rewrites config.
  • Disabled all browser extensions.

Anyone hit this?