server-usergrid.js

var express = require('express');
var request = require('request')

var app = express();

app.all('/books*', function(req, res) {
	request('https://api.usergrid.com/tim/sandbox'+req.url, function(err, result, usergridBody) {
		try {
        	usergridObject = JSON.parse(usergridBody)
        	isbn = usergridObject.entities[0].isbn;
          	
        	request('https://www.googleapis.com/books/v1/volumes?q=isbn:'+isbn, function(err, result, isbnBody) {
	        	usergridObject.entities[0]['description'] = JSON.parse(isbnBody).items[0].volumeInfo.description;
				res.send(usergridObject);
  	   		});
  	   	} catch(error) {
			res.send(usergridBody);
  	   	}
  	});

});

app.listen(5000);