Does Shopify allow API interface with another related website?
I want the cart contents from my existing website https://homeomart.com/ to transfer into another website where the base currency iis different. Can this be done with some handshake process?
Are you creating an app for this? You should be able to write a request to get the data from your existing website, parse it and then update the cart in Shopify via the Storefront API (https://shopify.dev/docs/api/storefront). There are several approaches you could use whether you’re adding the functionality to your theme, creating a custom app, etc. You would need an access token and have to configure the proper scopes.