Is it possible to search google products (formerly known as www.froogle.com ) using google api? I would like to search google products using UPC or EAN or JAN etc GTIN . The response can be XML or JSON .
Yes it is possible, it doesn't matter which language you use as you need to submit http requests.
Here is a link to the api: http://code.google.com/apis/shopping/search/v1/reference-overview.html