CREEM + DataFast Integration (Next.js)

This example demonstrates automatic revenue attribution between CREEM and DataFast.

Pattern A — server-side cookie reading (recommended):
  • The server reads datafast_visitor_id from the cookie jar automatically
  • No client-side JavaScript needed to pass the visitor ID
  • Works with both cookies and the DataFast session cookie
Pattern B — explicit visitor ID from the browser:
  • Reads the cookie or URL query param (?datafast_visitor_id=…) in JS
  • Useful when you control the checkout flow client-side or need the ID before a server render

Product: Premium Plan | Check the browser console for debug info