It's come a long way from the Sears and Roebuck mail order catalog. Yet, the new API might bring wrench and dishwasher company Sears the closest it's been to its origins in decades. Developers can now search the entire product database of Sears and Kmart (the companies merged in 2005).
Technology and entertainment retailer Best Buy is leading the way with the latest addition to the Best Buy API. It now allows developers to not just search the company's catalogue, but also complete the purchases within their own applications. Developers then earn a portion of the sale, which one would expect to be more likely than when applications must hand off the customer to Best Buy's site.