This module is in npm as askwatson . It provides a simple API for asking Watson a question on Bluemix using the question_and_answer service .

Basically you will need to get set up on Bluemix/CF and follow the instructions given for the sample Node.js application here https://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/doc/qaapi/#commonApplication, including running the cf commands, but I have factored out that code a bit into two modules, so your application can be cleaner. In case you need help finding the cf command line program you can download it from here https://github.com/cloudfoundry/cli/releases (under Installers) and install it with dpkg -i <filename> .

The first module is called bluemix-request-simple and it has the parts for pulling the host and port out of the environment and using them in a request.

The other module is this one, which is very simple to use:

watson . ask ( ' healthcare ' , ' What is the most common kind of cancer ' , function ( err , answers ) { console . log ( answers ) ; } ) ;

This will need to run on Bluemix so a more complete example would be:

var watson = require ( ' askwatson ' ) , restify = require ( ' restify ' ) ; var server = restify . createServer ( ) ; server . get ( ' /:domain/:question ' , function ( req , res ) { watson . ask ( req . params . domain , req . params . question , function ( e , ans ) { res . send ( ans ) ; } ) ; } ) ; server . listen ( process . env . VCAP_APP_PORT , process . env . VCAP_APP_HOST , function ( ) { console . log ( ' %s listening at %s ' , server . name , server . url ) ; } ) ;