How to Integrate the Marketplace in the Checkout Pro

To begin, you need to:

1. Register a Marketplace application.
2. Request your sellers to connect.
3. Create payment preferences on behalf of your sellers.

Create your application by accessing this link, checking the option MP Connect / Marketplace Mode and the scopes read, write and offline_access.

You must also complete a Redirect URI where the sellers will be redirected in order to be linked correctly.

Once the application has been created, you will get the APP_ID (application identifier) required for the next step.

To operate in Mercado Pago on behalf of your seller, you need to request their authorization first.

2.1. To do so, redirect the user to the following URL replacing the value of client_id for the APP_ID and the same redirect_uri you set up in the previous step:

https://auth.mercadopago.com.uy/authorization?client_id=APP_ID&response_type=code&platform_id=mp&redirect_uri=http://www.URL_de_retorno.com

http://www.URL_de_retorno.com?code=AUTHORIZATION_CODE

This AUTHORIZATION_CODE will be used to create the credentials and will be valid for 10 minutes.

By including this parameter, the redirect URL will look like this:

https://auth.mercadopago.com.uy/authorization?client_id=APP_ID&response_type=code&platform_id=mp&state=id=RANDOM_ID=&redirect_uri=http://www.URL_de_retorno.com

You will now receive the authorization code and the secure identifier at the specified return URL:

hhttp://www.URL_de_retorno.com?code=AUTHORIZATION_CODE&state=id=RANDOM_ID

Use the authorization code you got in the previous step to get your user’s credentials through the OAuth API, so that you can operate on behalf of the user.

Request:

curl -X POST \
     -H 'accept: application/json' \
     -H 'content-type: application/x-www-form-urlencoded' \
     'https://api.mercadopago.com/oauth/token' \
     -d 'client_secret=ACCESS_TOKEN' \
     -d 'grant_type=authorization_code' \
     -d 'code=AUTHORIZATION_CODE' \
     -d 'redirect_uri=REDIRECT_URI'

The parameters you need to include are:

• client_secret: Your ACCESS_TOKEN. You can get it from the detail of your application.
• code: The authorization code you got when redirecting the user back to your site.
• redirect_uri: It must be the same Redirect URI that you set up in your application.

Response:

{
    "access_token": "MARKETPLACE_SELLER_TOKEN",
    "token_type": "bearer",
    "expires_in": 15552000,
    "scope": "offline_access read write",
    "refresh_token": "TG-XXXXXXXX"
}

In the response, in addition to the Access Token of the seller, you will get the Refresh Token that you must use to periodically renew the user’s credentials.

This process must be performed periodically to ensure that the user’s credentials are stored in your system and valid, since they are valid for 6 months.

If you face, in the payment flow, an error related to the Access Token that you are using, we suggest you to automatically refresh and retry the payment, before showing an error to the buyer.

curl -X POST \
     -H 'accept: application/json' \
     -H 'content-type: application/x-www-form-urlencoded' \
     'https://api.mercadopago.com/oauth/token' \
     -d 'client_secret= ACCESS_TOKEN' \
     -d 'grant_type=refresh_token' \
     -d 'refresh_token=USER_RT'

Expected response:

{
    "access_token": "MARKETPLACE_SELLER_TOKEN",
    "token_type": "bearer",
    "expires_in": 15552000,
    "scope": "offline_access read write",
    "refresh_token": "TG-XXXXXXXX"
}

To collect on behalf of your sellers you must integrate the Checkout, generating the payment preferences with the Access Token of each seller for your application.

If you want to charge a fee for each payment processed by your application on behalf of your seller, simply add that amount to the marketplace_fee parameter when creating the preference:

          
curl -X POST \
-H 'accept: application/json' \
-H 'content-type: application/json' \
-H 'Authorization: Bearer SELLER_AT' \
'https://api.mercadopago.com/checkout/preferences' \
-d '{
    "items": [
        {
            "title": "Item title",
            "description": "Description",
            "quantity": 1,
            "unit_price": 50,
            "currency_id": "UYU",
            "picture_url": "https://www.mercadopago.com/org-img/MP3/home/logomp3.gif"
        }
    ],
    "marketplace_fee": 2.29
}'


        

          
<?php

$preference = new MercadoPago\Preference();

$item = new MercadoPago\Item();
$item->title = "Blue shirt";
$item->quantity = 10;
$item->title = "UYU";
$item->unit_price = 150;

$payer = new MercadoPago\Payer();
$payer->email = "test_user_19653727@testuser.com";

$preference->items = array($item);
$preference->payer = $payer;
$preference->marketplace_fee = 2.56
$preference->notification_url = "http://urlmarketplace.com/notification_ipn"

$preference->save();
?>


        

          
Preference preference = new Preference();

Item item = new Item();
item.setId("1234")
    .setTitle("Blue shirt")
    .setQuantity(10)
    .setCategoryId("UYU")
    .setUnitPrice((float) 150);

Payer payer = new Payer();
payer.setEmail("john@yourdomain.com");

preference.setPayer(payer);
preference.appendItem(item);
preference.setMarketPlace(2.56);
preference.setNotificationUrl("http://urlmarketplace.com/notification_ipn");
preference.save();


        

          
	var preference = {}

  var item = {
    title: 'Blue shirt',
    quantity: 10,
    currency_id: 'UYU',
    unit_price: 150
  }

  var payer = {
    email: "demo@mail.com"
  }

  preference.items = [item]
  preference.payer = payer
  preference.marketplace_fee = 2.56
  preference.notification_url = "http://urlmarketplace.com/notification_ipn";

  mercadopago.preferences.create(preference).then(function (data) {
     // Do Stuff...
   }).catch(function (error) {
     // Do Stuff...
   });


        

          
preference = MercadoPago::Preference.new()

item = MercadoPago::Item.new()
item.title="Blue shirt"
item.quantity= 10
item.currency_id = 'UYU'
item.unit_price = 150

payer = MercadoPago::Payer.new()
payer.email="john@yourdomain.com"

preference.items = [item]
preference.payer = payer
preference.marketplace_fee = 2.56
preference.notification_url = "http://urlmarketplace.com/notification_ipn"

preference.save


        

The seller will receive the difference between the total amount and the fees, both the fee of Mercado Pago and the Marketplace, as well as any other amount that should be deducted from the sale.

You need to send your notification_url, where you will receive a notification of all new payments and status updates generated.

For more information, go to the notifications section.

The cancellations and refunds can be made either by the marketplace or by the seller, via API or through the Mercado Pago account. Cancellations can only be made using the cancellation API.

For more information, go to refunds and cancellations.