pkgcloud.js

var pkgcloud = require('pkgcloud');

client = pkgcloud.storage.createClient({
  provider: 'rackspace',
  username: 'nodejitsu',
  apiKey: 'xxxxxxxxxxxxxxxxxxxxxxx'
});

client.getContainers(function (err, container) {
  if(err) {
    console.err(err);
  } else {
    console.log(container);
  }
});