I have a squarespace website where I sell the same products that I carry in-store with a Squareup POS. Is it possible to connect the two so that any online purchases would update the inventory count in my POS?
Yep! Trunk can sync inventory in real-time between Square and Squarespace. You just need to make sure SKUs match between both platforms.
So if you make a sale on Squarespace, Trunk will sync that in real-time to Square (and vice-versa). You can also make manual inventory adjustments and Trunk will pick up on it.
Square Community