I think I found a couple of options for you.
Ruby parameter:
The library provides support for the vast majority of AWS v3.1 APIs. For example, all forms of product search are implemented, as well as the transaction details API and the remote shopping cart API. In addition, advanced features are available, such as multi-threaded extraction of multiple pages, caching of objects, and determination of the most suitable AWS language for the user.
http://www.caliban.org/ruby/ruby-amazon.shtml
Python parameter:
The Product Advertising API helps you advertise Amazon products using product search and search, product information, and features such as customer reviews, related products, wish lists, and new and used listings.
http://pypi.python.org/pypi/python-amazon-product-api/0.2.1
Hope this helps you. =)
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