$ npm install monkeylearn-client --save

var Classifier = require('monkeylearn-client').Classifier;

var classifier = new Classifier(process.env['MONKEYLEARN_AUTH_TOKEN'], 
                                {
                                  apiId: 'cl_5icAVzKR' // Generic Classifier
                                });
var strings = [
    "Hello World",
    "Foxes, Horses, Bunnies and Ducklings"
  ];

classifier.classify(strings)
  .then(function(response){
    console.log(JSON.stringify(response.results()));
    console.log("Query Limit Remaning : " + classifier.queryLimitRemaning());
  })
  .catch(function(error){
    console.error("ERROR", error);
  });                               

$ export MONKEYLEARN_AUTH_TOKEN=YOUR_AUTH_TOKEN
$ ./bin/classify "Hello World"

var Extractor = require('monkeylearn-client').Extractor;

var extractor = new Extractor(process.env['MONKEYLEARN_AUTH_TOKEN'], 
                                {
                                  apiId: 'ex_y7BPYzNG' // Generic Extractor
                                });
var strings = [
    "Hello World"
];

extractor.extractKeywords(strings)
  .then(function(response){
    console.log(JSON.stringify(response.results()));
    console.log("Query Limit Remaning : " + extractor.queryLimitRemaning());
  })
  .catch(function(error){
    console.error("ERROR", error);
  });
                            

$ export MONKEYLEARN_AUTH_TOKEN=YOUR_AUTH_TOKEN
$ ./bin/keyword_extract "Hello World"