# MD for: https://www.mercadopago.com.br/developers/en/docs/sdks-library/landing.md

#  SDKs 

 With Mercado Pago's SDK libraries, you can reduce the integration time on both client-side and server-side. 

![Element for view](https://www.mercadopago.com.br/sdk/library-media1-rebranding.png)

 Availability by country 

Argentina

Brazil

Chile

Colombia

Mexico

Peru

Uruguay

 Client-side  With MercadoPago.js or the React SDK installed, you can make calls to the cards token and use many other features in the integration. 

![](https://www.mercadopago.com.br/sdk/library-media-2-rebranding.png)

 Server-side  By using our backend SDKs, you gain easy access to the server-side functionalities of our solutions. This allows you to create and check the status of various transactions, integrate payments via card and other methods, as well as initiate refunds or chargebacks. 

![](https://www.mercadopago.com.br/sdk/library-media-3-rebranding.png)