The MeaningCloud Sentiment Analysis API detects the sentiment of any text. Make calls to the REST API with GET or POST (POST is recommended) over HTTP/S with returns in JSON and XML. An API Key is required and available after signing up for an account with MeaningCloud. The SentimentAnalysis API determines whether a piece of text has positive, negative, or neutral sentiment by identifying the local polarity of the different sentences in the text and evaluating the relationship between. This results in a polarity value for the text as a whole. See the documentation for examples, code snippets, and a test console for getting familiar with the API.