The Medical Classifier API available in JSON format is a free resource built on top of the US NLM Medical Subject Headings Library (MeSH). It uses a machine-learning algorithm and knowledge tree to classify text or HTML into broad subjects.
Seventeen APIs have been added to the ProgrammableWeb directory in categories including Logistics, Tourism, and Natural Language Processing. Highlights today include APIs for UK postal service Royal Mail and an API from Google for detecting internet trolls. Here's a rundown of the latest additions.