How do i integrate Xero and Quickbooks

Working on a free AI invoice generator and i want to add quick import from Xero and quickbooks. Any idea how this can be easily done?

Xero has a developer API, you could start there.

You can integrate Xero and QuickBooks using third-party integration tools like Zapier, Make, or SyncHub, or by connecting both through their APIs to automatically sync invoices, customers, payments, and financial data.