req.on("end", function () {
		res.statusCode = 200;
		res.end ();

		var event = JSON.parse(data);

		var mp = new MP ("ACCESS_TOKEN");

		if (event.type == "payment") {
			var paymentInfo = mp.get ("/v1/payments/"+event.data.id);

			if (paymentInfo.status == 200) {
				console.log (paymentInfo.response);
			}
		}
	});
var MP = require ("mercadopago");

var mp = new MP ("CLIENT_ID", "CLIENT_SECRET");

var getBalance = mp.get ("/users/USER_ID/mercadopago_account/balance");

getBalance.then (
    function (balance) {
        console.log (balance);
    },
    function (error) {
        console.log (error);
    });
var MP = require ("mercadopago");

var mp = new MP ("ACCESS_TOKEN");

var filters = {
    "email": "your.payer@email"
}

var customer = mp.get ("/v1/customers/search", filters);

customer.then (function (customer) {
		console.log (customer);
	},
	function (error) {
		console.log (error);
	});