Vacuum
Vacuum is a Ruby wrapper to the Amazon Product Advertising API.
Usage
req = Vacuum.new
req.configure key: 'foo',
secret: 'secret',
tag: 'biz-val'
params = { 'Operation' => 'ItemSearch',
'SearchIndex' => 'Books',
'Keywords' => 'Architecture' }
req.get query: params # XPath is your friend.