Amazon EU and UK checkout using requests from a link

I need an Amazon EU and UK auto-checkout program, using requsts and offerlistingid. I currently have a program that automatically opens links in Chrome when an Amazon product comes into stock. The link looks like this : [login to view URL] I need the offerlistingid extracted and a program to purchase the item using only HTTP requests. In total, I have a program which opens a link in my browser, I need another program to extract the offerid from the URL, and an amazon checkout automated using the offerid and HTTP requests I would like to be able to edit the code myself in case of any changes. This should be easy for anyone with HTTP request, selenium, Postmaster and JS/Python knowledge