The Objective Revision Evaluation Service (ORES) API offers a machine learning service for building new wiki tools. It provides access to different fitness models. An example is 'wp10' which predicts the quality level of an article, and can learn to imitate article quality assessments that humans perform. These models are available in 15 languages, and Wikidata. This API returns data in JSON, and JSONP formats, and is REST based.