A Webhook to read (change in quantity) for inventory?

Hello,

I manually adjust the quantities of my products in my inventory, and I want the (change) to reflect on my other systems, in this case, it will be WooCommerce.

So I am thinking of two possible ways:

• Quickbooks will call an API on my system once a change occurs
• My system will periodically check for changes in quantity (minus or plus)

I don't want to copy the exact number, but I just need the (net change) which is already displayed on Quickbooks Online.

The change only (-2 or +3 per se) will be sent.

How can I achieve this?