Squarespace basket and items not in squarespace inventory.

Site URL: https://www.bifolddoorstore.co.uk/

Hi All,

I have software that allows customers to build products on my site. This  software has the capability to export the data e.g. descriptions and costs etc to an iFrame basket for the customers to checkout.

Is there any way that anyone knows of that this can be sent to the existing squarespace basket (using stripe). If not is there any way to send this to stripe in its own separate basket?

Thanks in advance