Mercado Pago Tarjetas (Checkout API) is an app that allows transparent payments with debit or credit cards, where the entire checkout process happens within the online store environment, without the need to redirect to an external page. In addition to providing greater control in the customization and integration process, it reduces cart abandonment and increases the possibility of conversion.

To integrate Mercado Pago Tarjetas, install the application through the Shopify panel or the Marketplace. After installation, you can configure the expiration period.

To install Mercado Pago Tarjetas through the Shopify admin panel, follow the steps below:

1. Go to your Shopify store.
2. In the store's administration panel, click on Settings in the bottom-left corner of the page.
3. Once there, select the Payments option from the left-hand side menu.
4. In "Payment providers", click on Choose provider.
5. On the "External payment providers" screen, serach for the app "Mercado Pago Tarjetas".
6. Once you've found it, select it and click Install. Carefully read the information about the requested permissions and click Install again.
7. After accepting the requested permissions, click Manage account to input your credentials and link your Mercado Pago account to the store.

8. In the Mercado Pago admin, go to Your integrations and select your application. If you haven't created an application yet, access the developer Dashboard documentation to learn how to create one.
9. Click on Production credentials in the left menu. Copy the public_key and access_token.
10. Return your store settings on Shopify and enter your production credentials (access_token and public_key) in the corresponding fields, being careful not to swap the fields when copying and pasting the credentials.

11. Click on Save credentials.
12. Finally, click on the Verify activation option of Mercado Pago Tarjetas, go to the Settings section of Shopify, and click Activate to activate the app and complete the installation.

13. After completing the installation, return to the store's admin panel and click on Settings > Payments.
14. In "Payment capture method", ensure that the Automatically at checkout field is enabled to guarantee that payments are captured when the order is placed.
15. Still in the "Settings" of the store's administrative panel, click Checkout > Customer Contact Method and ensure that the Email field is selected as the contact method that customers should use to receive order notifications.

Done! The Mercado Pago Tarjetas checkout is ready to receive payments.

To install Mercado Pago Tarjetas via Marketplace, follow the steps below:

1. Access the Mercado Pago Tarjetas app page in the Marketplace and click Install. If you haven't already, log in with your Shopify account.
2. Read carefully the information about the requested permissions and click Install again.
3. After accepting the requested permissions, click Manage account to input your credentials and link your Mercado Pago account to the store.

4. In the Mercado Pago admin, go to Your integrations and select your application. If you haven't created an application yet, access the developer Dashboard documentation to learn how to create one.
5. Click on Production credentials in the left menu. Copy the public_key and access_token.
6. Return your store settings on Shopify and enter your production credentials (access_token and public_key) in the corresponding fields, being careful not to swap the fields when copying and pasting the credentials.

7. Click on Save credentials.
8. Finally, click on the Verify activation option of Mercado Pago Tarjetas, go to the "Settings" section of Shopify, and click Activate to activate the app and complete the installation.

9. After completing the installation, return to the store's admin panel and click on Settings > Payments.
10. In "Payment capture method", ensure that the automatically at checkout field is enabled to guarantee that payments are captured when the order is placed.
11. Still in the "Settings" of the store's administrative panel, click Checkout > Customer Contact Method and ensure that the Email field is selected as the contact method that customers should use to receive order notifications.

Done! The Mercado Pago Tarjetas checkout is ready to receive payments.

After installing and activating the Mercado Pago Tarjetas app, set up the option to offer your customers the possibility to pay in interest-free installments with any credit card. To do this, follow the steps below.

1. Log in to your Mercado Pago account.
2. Go to the Your business > Costs section and select the Checkout option.
3. In "Interest-free installments," click on Configure installments.
4. Next, click on Configure interest-free installments.
5. Finally, enable the Offer interest-free installments option and choose how many installments you want to offer in your store.
6. After setting up installment configurations, go to your Shopify store.
7. In the store's administration panel, click on Settings in the bottom-left corner of the page.
8. Once there, select the Payments option from the left-hand side menu.
9. In "Mercado Pago Cards", click on Manage.
10. Then, click on More actions > Manage.
11. Finally, click on Sync so that the configured installment options are synchronized with your store.