Configure notifications

Below is a step-by-step guide to receiving payment notifications in integrations with Checkout Transparente. Once configured, Webhook notifications will be sent whenever an update occurs on the reported topic, including the creation and update of orders and transaction processing.

1. Go to Integrations and select the application integrated with Checkout Transparente for which you want to activate notifications.

2. In the side menu, select Webhooks configuration.

3. In the Test / Production switch at the top of the screen, select Test and enter the HTTPS URL to receive test notifications. If you want to configure production notifications, select Production and enter the production HTTPS URL.

4. Select the Order (Mercado Pago) event to receive notifications, which will be sent in JSON format via an HTTPS POST to the URL configured for the corresponding environment.

5. Finally, click Save. This will generate a unique secret signature for the application, which allows you to validate the authenticity of the received notifications and confirm that Mercado Pago sent them. The signature does not expire, and periodic renewal is not mandatory, although it is recommended. To renew it, click Reset secret signature.

To ensure that notifications are configured correctly, it is necessary to simulate their reception. To do this, follow the steps below.

1. After configuring your Webhooks, click Simulate notification.
2. On the simulation screen, select the URL to be tested.
3. Next, choose the event type and enter the ID that will be sent in the notification body (Data ID).

4. Finally, click on Send test to verify the request, the response provided by the server, and the event description. You will receive a response as shown in the example below, representing the body of the notification received on your server.

json
{
  "action": "order.processed",
  "api_version": "v1",
  "application_id": "7255333517291496",
  "data": {
    "currency_id": "ARS",
    "external_reference": "ext_ref_1234",
    "id": "ORD01M28P44G5FG8RJPM579EH56FV",
    "items": [
      {
        "external_code": "6754960",
        "quantity": 1
      }
    ],
    "status": "processed",
    "status_detail": "accredited",
    "total_amount": "200.00",
    "total_paid_amount": "200.00",
    "transactions": {
      "payments": [
        {
          "amount": "200.00",
          "id": "PAY01M28P44GDSD4JYTSK5SYZT6BH",
          "paid_amount": "200.00",
          "payment_method": {
            "id": "master",
            "installments": 1,
            "type": "credit_card"
          },
          "reference": {
            "id": "000fkonfh0"
          },
          "status": "processed",
          "status_detail": "accredited"
        }
      ]
    },
    "type": "online",
    "version": 1
  },
  "date_created": "2026-09-11T16:52:02.736053815Z",
  "live_mode": true,
  "type": "order",
  "user_id": "11111111"
}

To review how notifications are working, open the application and select the Webhooks tab under Home. Use the Test / Production switch to view notifications for the selected environment.

From there, you can filter notification deliveries, review their date, delivery status, action, event, and resource ID, and check delivery and response-time metrics. In Test, data updates in real time.

To review the delivery data and notification body, select a notification from the table to open its details.

To resend one or more notifications, select them in the table and click Resend notifications.

Validating the origin of a notification is essential to ensure the security and authenticity of the received information. This process helps prevent fraud and ensures that only legitimate notifications are processed.

Mercado Pago will send a notification similar to the example below for a order topic alert. This example includes the complete notification, which contains the query params, the body, and the header of the notification.

• Query params: These are query parameters that accompany the URL. In the example, we have data.id=ORD01M28P44G5FG8RJPM579EH56FV and type=order.
• Body: The notification body contains detailed information about the event and the order, including action, data.status, data.status_detail, and data.transactions.payments.
• Header: The header contains important metadata, including the secret signature of the notification x-signature.

notification
POST /test?data.id=ORD01M28P44G5FG8RJPM579EH56FV&type=order HTTP/1.1
Host: test.requestcatcher.com
Accept: */*
Accept-Encoding: *
Connection: keep-alive
Content-Type: application/json
Newrelic: eyJ2IjpbMCwxXSwiZCI6eyJ0eSI6IkFwcCIsImFjIjoiOTg5NTg2IiwiYXAiOiI5NjA2MzYwOTQiLCJ0eCI6ImY4MzljZjg4ODg2MGRmZTIiLCJ0ciI6ImMwOGMwZGMyMjNjZDY2YjJkZWQwMjUxZmYxNWNiNGQ1IiwicHIiOjEuMjUwMzIsInNhIjp0cnVlLCJ0aSI6MTc0Mjg0MjU4MDE2NCwiaWQiOiIxOGI2NDcxNjNkNzI3NjU4IiwidGsiOiIxNzA5NzA3In19=
Traceparent: 00-c08c0dc223cd66b2ded0251ff15cb4d5-18b647163d727658-01
Tracestate: 1709707@nr=0-0-989586-960636094-18b647163d727658-f839cf888860dfe2-1-1.250320-1742842580164
User-Agent: restclient-node/4.15.3
X-Request-Id: 2066ca19-c6f1-498a-be75-1923005edd06
X-Rest-Pool-Name: /services/webhooks.js
X-Retry: 0
X-Signature: ts=1742505638683,v1=ced36ab6d33566bb1e16c125819b8d840d6b8ef136b0b9127c76064466f5229b
X-Socket-Timeout: 22000
{"action":"order.processed","api_version":"v1","application_id":"7255333517291496","data":{"currency_id":"ARS","external_reference":"ext_ref_1234","id":"ORD01M28P44G5FG8RJPM579EH56FV","items":[{"external_code":"6754960","quantity":1}],"status":"processed","status_detail":"accredited","total_amount":"200.00","total_paid_amount":"200.00","transactions":{"payments":[{"amount":"200.00","id":"PAY01M28P44GDSD4JYTSK5SYZT6BH","paid_amount":"200.00","payment_method":{"id":"master","installments":1,"type":"credit_card"},"reference":{"id":"000fkonfh0"},"status":"processed","status_detail":"accredited"}]},"type":"online","version":1},"date_created":"2026-09-11T16:52:02.736053815Z","live_mode":true,"type":"order","user_id":"11111111"}

From the received Webhook notification, you can validate the authenticity of its origin. Mercado Pago will always include the secret key in the Webhooks notifications to be received, which will allow validating their authenticity. This key will be sent in the x-signature header, similar to the example below.

plain
ts=1742505638683,v1=ced36ab6d33566bb1e16c125819b8d840d6b8ef136b0b9127c76064466f5229b

To confirm the validation, extract the key from the header and compare it with the key provided for your application under Webhooks configuration.

Follow one of the approaches below to validate the authenticity of the notification.

<?php
use MercadoPago\Webhook\WebhookSignatureValidator;
use MercadoPago\Exceptions\InvalidWebhookSignatureException;

try {
    WebhookSignatureValidator::validate(
        $_SERVER['HTTP_X_SIGNATURE'],
        $_SERVER['HTTP_X_REQUEST_ID'],
        $_GET['data_id'],
        $secret
    );
    http_response_code(200);
} catch (InvalidWebhookSignatureException $e) {
    http_response_code(401);
}

import { WebhookSignatureValidator, InvalidWebhookSignatureError } from 'mercadopago';

try {
    WebhookSignatureValidator.validate({
        xSignature: req.headers['x-signature'],
        xRequestId: req.headers['x-request-id'],
        dataId:     req.query['data.id'],
        secret,
    });
    res.sendStatus(200);
} catch (err) {
    if (err instanceof InvalidWebhookSignatureError) res.status(401).end();
    else throw err;
}

from mercadopago.webhook import WebhookSignatureValidator, InvalidWebhookSignatureError

try:
    WebhookSignatureValidator.validate(
        request.headers.get(“x-signature”),
        request.headers.get(“x-request-id”),
        request.args.get(“data.id”),
        secret,
    )
    return “”, 200
except InvalidWebhookSignatureError:
    return “”, 401

import “github.com/mercadopago/sdk-go/pkg/webhook”

err := webhook.ValidateSignature(
    r.Header.Get(“x-signature”),
    r.Header.Get(“x-request-id”),
    r.URL.Query().Get(“data.id”),
    secret,
)
if err != nil {
    w.WriteHeader(http.StatusUnauthorized)
    return
}
w.WriteHeader(http.StatusOK)

using MercadoPago.Error;
using MercadoPago.Webhook;

try {
    WebhookSignatureValidator.Validate(
        xSignature: Request.Headers[“x-signature”],
        xRequestId: Request.Headers[“x-request-id”],
        dataId:     Request.Query[“data.id”],
        secret:     secret);
    return Ok();
} catch (InvalidWebhookSignatureException) {
    return Unauthorized();
}

import com.mercadopago.webhook.WebhookSignatureValidator;
import com.mercadopago.exceptions.MPInvalidWebhookSignatureException;

try {
    WebhookSignatureValidator.validate(
        request.getHeader(“x-signature”),
        request.getHeader(“x-request-id”),
        request.getParameter(“data.id”),
        secret);
    response.setStatus(200);
} catch (MPInvalidWebhookSignatureException e) {
    response.setStatus(401);
}

require 'mercadopago/webhook/validator'

begin
    Mercadopago::Webhook::Validator.validate(
        request.headers['x-signature'],
        request.headers['x-request-id'],
        request.params['data.id'],
        secret
    )
    head :ok
rescue Mercadopago::Webhook::InvalidWebhookSignatureError
    head :unauthorized
end

When you receive a notification on your platform, Mercado Pago expects a response to validate that the reception was correct. To do this, you must return an HTTP STATUS 200 (OK) or 201 (CREATED).

The waiting time for this confirmation will be 22 seconds. If this response is not sent, the system will understand that the notification was not received and will make a new attempt to send it every 15 minutes until it receives the response. After the third attempt, the deadline will be extended, but the deliveries will continue to happen.

After responding to the notification, confirming its receipt, you can get all the information about the notified resource by sending a request to the endpoint /v1/orders/{id}GET.

With this information, you will be able to make the necessary updates to your platform, such as updating an approved payment.