This is a very basic API that returns the sentiment value of a word or a sentence. You can define the sentiment value of any additional word that is not in the dictionary.

The original sentiment values are taken from the dataset AFINN-111.txt from Technical University of Denmark

This is version 0. See the full version lists here.

Start the API...

ruby ./sentiment-api.rb 8080

Call one method of the API with curl (or with your browser if you want)

curl -X GET -g "http://localhost:8080/v1/words/fantastic.json

The above call returns

{"word":"fantastic","sentiment":4}