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.
In response to developer feedback, Twitter will soon add semantic versioning to its Ads API so that developers can more easily deal with new and deprecated features. Additionally, Twitter is increasing the time it supports deprecated versions of the Ads API from 30 to 90 days.