Shopping List Integration: Add a service to check if something is on the list already

Hi,

I currently use the an automation to add items to the Shopping List Integration when someone taps an NFC tag, this works great most of the time, but if someone taps the tag a second time, there is no way to skip adding it with a condition.

Ideally, I’d like to se a service added to the integration that checks if %INPUT% is on the list already (Ideally this would ignore items that have been completed already)