This Amazon Product Advertising library in Node.js supports APA API and request signatures. The main benefit of this work could be the node wrapper that performs HTTP requests, process responses, and parses XML. Because it takes care of those operations, is not necessary to make signatures from scratch. Resources include installation, quick start, and API documentation.
Violet this week announced what it says is a "unified API for anything on the internet." The idea is to make it easy for people to buy whatever they want, no matter where they see it on the web, without requiring them to backtrack or hop through ecommerce sites across the internet.
This segment of the past year's APIs focuses on eCommerce, Sales, Marketing and Social Media. Sub categories covered here include Advertising, Content, Printing, Products, Coupons, CRM, Taxes, Feedback, Auctions, Shipping, Ratings, Personalization, SEO, Engagement and others.