IPN

The IPN (Instant Payment Notification) is a mechanism that allows your application to receive notifications from Mercado Pago informing the status of a certain payment, chargeback and merchant_order, through a call HTTP POST to inform about your transactions.

In IPN notifications, only one notification URL can be configured per account (depending on the application, more than one application can use this URL). In addition, there is also the possibility of using this type of notification from the object's notification_url field, so the URL can be different for each object or application.

In this documentation, we will explain the necessary settings for receiving IPN notifications (through the Dashboard or when creating payments), as well as showing the necessary actions that you must take for Mercado Pago to validate that the messages were properly received.

Dashboard configuration

Below we will explain how to indicate the URLs that will be notified and how to configure the events for which notification will be received.

ipn

Access the IPN Notifications.
Next, configure the URL of production where notifications will be received.
You will also be able to experiment and test if the indicated URL is receiving notifications correctly, being able to verify the request, the response given by the server and the description of the event.
If you need to identify multiple accounts, at the end of the indicated URL you can specify the parameter ?customer=(sellername) endpoint to identify the sellers.
Select the events from which you will receive notifications in json format using HTTP POST to the URL specified above. We notify you of events related to your orders (merchant_orders), chargebacks received (chargebacks), payments received (payment) or payment attempts (point_integration_ipn).

Configuration while creating payments

It is possible to configure the notification URL more specifically for each payment using the notification_url field. See below how to do this using the SDKs.

In the notification_url field, indicate the URL from which notifications will be received, as shown below.

          
<?php
    require_once 'vendor/autoload.php';

    MercadoPago\SDK::setAccessToken("YOUR_ACCESS_TOKEN");

    $payment = new MercadoPago\Payment();
    $payment->transaction_amount = (float)$_POST['transactionAmount'];
    $payment->token = $_POST['token'];
    $payment->description = $_POST['description'];
    $payment->installments = (int)$_POST['installments'];
    $payment->payment_method_id = $_POST['paymentMethodId'];
    $payment->issuer_id = (int)$_POST['issuer'];
    $payment->notification_url = `http://requestbin.fullcontact.com/1ogudgk1`;
    ...
    $response = array(
        'status' => $payment->status,
        'status_detail' => $payment->status_detail,
        'id' => $payment->id
    );
    echo json_encode($response);

?>

          
var mercadopago = require('mercadopago');
mercadopago.configurations.setAccessToken("YOUR_ACCESS_TOKEN");

var payment_data = {
  transaction_amount: Number(req.body.transactionAmount),
  token: req.body.token,
  description: req.body.description,
  installments: Number(req.body.installments),
  payment_method_id: req.body.paymentMethodId,
  issuer_id: req.body.issuer,
  notification_url: "http://requestbin.fullcontact.com/1ogudgk1",
  payer: {
    email: req.body.email,
    identification: {
      type: req.body.docType,
      number: req.body.docNumber
    }
  }
};

mercadopago.payment.save(payment_data)
  .then(function(response) {
    res.status(response.status).json({
      status: response.body.status,
      status_detail: response.body.status_detail,
      id: response.body.id
≈    });
  })
  .catch(function(error) {
    res.status(response.status).send(error);
  });

          
MercadoPago.SDK.setAccessToken("YOUR_ACCESS_TOKEN");

Payment payment = new Payment();
payment.setTransactionAmount(Float.valueOf(request.getParameter("transactionAmount")))
       .setToken(request.getParameter("token"))
       .setDescription(request.getParameter("description"))
       .setInstallments(Integer.valueOf(request.getParameter("installments")))
       .setPaymentMethodId(request.getParameter("paymentMethodId"))
       .setNotificationUrl("http://requestbin.fullcontact.com/1ogudgk1");

Identification identification = new Identification();
identification.setType(request.getParameter("docType"))
              .setNumber(request.getParameter("docNumber")); 

Payer payer = new Payer();
payer.setEmail(request.getParameter("email"))
     .setIdentification(identification);
     
payment.setPayer(payer);

payment.save();

System.out.println(payment.getStatus());

          
require 'mercadopago'
sdk = Mercadopago::SDK.new('YOUR_ACCESS_TOKEN')

payment_data = {
  transaction_amount: params[:transactionAmount].to_f,
  token: params[:token],
  description: params[:description],
  installments: params[:installments].to_i,
  payment_method_id: params[:paymentMethodId],
  notification_url: "http://requestbin.fullcontact.com/1ogudgk1",
  payer: {
    email: params[:email],
    identification: {
      type: params[:docType],
      number: params[:docNumber]
    }
  }
}

payment_response = sdk.payment.create(payment_data)
payment = payment_response[:response]

puts payment

          
using System;
using MercadoPago.Client.Common;
using MercadoPago.Client.Payment;
using MercadoPago.Config;
using MercadoPago.Resource.Payment;

MercadoPagoConfig.AccessToken = "YOUR_ACCESS_TOKEN";

var paymentRequest = new PaymentCreateRequest
{
    TransactionAmount = decimal.Parse(Request["transactionAmount"]),
    Token = Request["token"],
    Description = Request["description"],
    Installments = int.Parse(Request["installments"]),
    PaymentMethodId = Request["paymentMethodId"],
    NotificationUrl = "http://requestbin.fullcontact.com/1ogudgk1",

    Payer = new PaymentPayerRequest
    {
        Email = Request["email"],
        Identification = new IdentificationRequest
        {
            Type = Request["docType"],
            Number = Request["docNumber"],
        },
    },
};

var client = new PaymentClient();
Payment payment = await client.CreateAsync(paymentRequest);

Console.WriteLine(payment.Status);

          
import mercadopago
sdk = mercadopago.SDK("ACCESS_TOKEN")

payment_data = {
    "transaction_amount": float(request.POST.get("transaction_amount")),
    "token": request.POST.get("token"),
    "description": request.POST.get("description"),
    "installments": int(request.POST.get("installments")),
    "payment_method_id": request.POST.get("payment_method_id"),
    "notification_url": "http://requestbin.fullcontact.com/1ogudgk1",
    "payer": {
        "email": request.POST.get("email"),
        "identification": {
            "type": request.POST.get("type"), 
            "number": request.POST.get("number")
        }
    }
}

payment_response = sdk.payment().create(payment_data)
payment = payment_response["response"]

print(payment)

          
curl -X POST \
    -H 'accept: application/json' \
    -H 'content-type: application/json' \
    -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
    'https://api.mercadopago.com/v1/payments' \
    -d '{
          "transaction_amount": 100,
          "token": "ff8080814c11e237014c1ff593b57b4d",
          "description": "Blue shirt",
          "installments": 1,
          "payment_method_id": "visa",
          "issuer_id": 310,
          "notification_url": "http://requestbin.fullcontact.com/1ogudgk1",
          "payer": {
            "email": "test@test.com"

          }
    }'

Implement the notifications receiver using the following code as an example:

<?php
   MercadoPago\SDK::setAccessToken("ENV_ACCESS_TOKEN");
 
   $merchant_order = null;
 
   switch($_GET["topic"]) {
       case "payment":
           $payment = MercadoPago\Payment::find_by_id($_GET["id"]);
           // Get the payment and the corresponding merchant_order reported by the IPN.
           $merchant_order = MercadoPago\MerchantOrder::find_by_id($payment->order->id);
           break;
       case "merchant_order":
           $merchant_order = MercadoPago\MerchantOrder::find_by_id($_GET["id"]);
           break;
   }
 
   $paid_amount = 0;
   foreach ($merchant_order->payments as $payment) {  
       if ($payment['status'] == 'approved'){
           $paid_amount += $payment['transaction_amount'];
       }
   }
  
   // If the payment's transaction amount is equal (or bigger) than the merchant_order's amount you can release your items
   if($paid_amount >= $merchant_order->total_amount){
       if (count($merchant_order->shipments)>0) { // The merchant_order has shipments
           if($merchant_order->shipments[0]->status == "ready_to_ship") {
               print_r("Totally paid. Print the label and release your item.");
           }
       } else { // The merchant_order don't has any shipments
           print_r("Totally paid. Release your item.");
       }
   } else {
       print_r("Not paid yet. Do not release your item.");
   }
  
?>

Once the settings have been made, Mercado Pago will notify this URL with two parameters each time a resource is created or updated:

Field	Description
`topic`	Identifies what the resource is, it can be `payment`, `chargebacks`, `merchant_order` or `point_integration_ipn`.
`id`	It is a unique identifier of the notified resource.

For example, if you set the URL: https://www.yoursite.com/notifications, you will receive payment notifications like this: https://www.yoursite.com/notifications?topic=payment&id=123456789.

If you want to receive notifications only from IPN and not from Webhooks, you can add in the notification_url the parameter source_news=ipn. For example: https://www.yourserver.com/notifications?source_news=ipn

Actions required after receiving notification

When you receive a notification on your platform, Mercado Pago waits for a response to validate that you received it correctly. For that, you must return an HTTP STATUS 200 (OK) or 201 (CREATED). If this response is not sent, it will be understood that you have not received the notification and a further attempt to send it will be made until you submit the response.

In the table below you can find the main events, deadlines and waiting time for receiving new notification attempts.

Event	Deadline after the first dispatch	Confirmation waiting time
Shipping	-	22 seconds
First try	5 minutes	5 seconds
Second attempt	45 minutes	5 seconds
Third attempt	6 hours	5 seconds
Fourth attempt	2 days	5 seconds
Fifth attempt	4 days	5 seconds

After returning the notification, you will get the full information of the notified resource by going to the corresponding API endpoint:

Type	URL	Documentation
payment	`https://api.mercadopago.com/v1/payments/[ID]`	check documentation
chargebacks	`https://api.mercadopago.com/v1/chargebacks/[ID]`	check documentation
merchant_orders	`https://api.mercadopago.com/merchant_orders/[ID]`	check documentation
point_integration_ipn	-	check documentation

With this information, you will be able to carry out the necessary updates to your platform, such as updating an approved payment or a closed order.