# MD for: https://www.mercadopago.com.uy/developers/es/docs/checkout-pro/configure-development-enviroment.md

\# Configure development environment To start integrating Mercado Pago's payment solutions, it is necessary to prepare your development environment with a series of configurations that will allow you to access Mercado Pago's functionalities from the backend. Next, you will need to install and configure the official Mercado Pago SDK: > SERVER\_SIDE > > h2 > > Install the Mercado Pago SDK The \*\*backend SDK\*\* is designed to handle server-side operations, allowing you to create and manage :toolTipComponent\[payment preferences\]{content="A payment preference is an object or set of information that represents the product or service you want to charge for. Within the Mercado Pago ecosystem, this object is known as \`preference\`."}, process transactions, and perform other critical operations securely. > NOTE > > If you prefer, you can download the Mercado Pago SDKs from our \[official libraries\](https://www.mercadopago.com.uy/developers/en/docs/sdks-library/server-side). Install the Mercado Pago SDK in the language that best fits your integration using a dependency manager, as shown below. 

* [csharp ](#editor%5F5)
* [go ](#editor%5F7)
* [java ](#editor%5F3)
* [node ](#editor%5F2)
* [php ](#editor%5F1)
* [python ](#editor%5F6)
* [ruby ](#editor%5F4)
php node java ruby csharp python go 

To install the SDK, you must run the following code in your terminal's command line using [Composer](https://getcomposer.org/download):

```
php composer.phar require "mercadopago/dx-php"
```

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To install the SDK, you must run the following code in your terminal's command line using [npm](https://www.npmjs.com/get-npm):

```
npm install mercadopago
```

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To install the SDK in your [Maven](http://maven.apache.org/install.html) project, you must add the following dependency to your <code>pom.xml</code> file and run <code>maven install</code> in your terminal's command line:

```
<dependency>
  <groupId>com.mercadopago</groupId>
  <artifactId>sdk-java</artifactId>
  <version>2.1.7</version>
</dependency>
```

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To install the SDK, you must run the following code in your terminal's command line using [Gem](https://rubygems.org/gems/mercadopago-sdk):

```
gem install mercadopago-sdk
```

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To install the SDK, you must run the following code in your terminal's command line using [NuGet](https://docs.microsoft.com/es-es/nuget/reference/nuget-exe-cli-reference):

```
nuget install mercadopago-sdk
```

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To install the SDK, you must run the following code in your terminal's command line using [Pip](https://pypi.org/project/mercadopago/):

```
pip3 install mercadopago
```

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```
go get -u github.com/mercadopago/sdk-go
```

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\> SERVER\_SIDE > > h2 > > Initialize Mercado Pago library Next, create a main file (\_main\_) in the \_backend\_ of your project with the programming language you are using. There, place the following code replacing the value \`TEST\_ACCESS\_TOKEN\` with the :toolTipComponent\[test Access Token\]{content="Testing private key of the application created in Mercado Pago, that is used in the backend. You can access it through \*Your integrations\* in the \*Integration data\* section, by going to the \*Credentials\* section located on the right side of the screen and clicking on \*Testing\*. Alternatively, you can access it through \*Your integrations > Application details > Testing > Testing credentials\*."}. 

* [csharp ](#editor%5F12)
* [go ](#editor%5F14)
* [java ](#editor%5F10)
* [node ](#editor%5F9)
* [php ](#editor%5F8)
* [python ](#editor%5F13)
* [ruby ](#editor%5F11)
php node java ruby csharp python go 

```
<?php
// Mercado Pago SDK
use MercadoPago\MercadoPagoConfig;
// Add credentials
MercadoPagoConfig::setAccessToken("TEST_ACCESS_TOKEN");
?>
```

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```
// Mercado Pago SDK
import { MercadoPagoConfig, Preference } from 'mercadopago';
// Add credentials
const client = new MercadoPagoConfig({ accessToken: 'YOUR_ACCESS_TOKEN' });
```

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```
// Mercado Pago SDK
import com.mercadopago.MercadoPagoConfig;
// Add credentials
MercadoPagoConfig.setAccessToken("TEST_ACCESS_TOKEN");
```

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```
# Mercado Pago SDK
require 'mercadopago'
# Add credentials
sdk = Mercadopago::SDK.new('TEST_ACCESS_TOKEN')
```

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```
// Mercado Pago SDK
 using MercadoPago.Config;
 // Add credentials
MercadoPagoConfig.AccessToken = "TEST_ACCESS_TOKEN";
```

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```
# Mercado Pago SDK
import mercadopago
# Add credentials
sdk = mercadopago.SDK("TEST_ACCESS_TOKEN")
```

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```
import (
	"github.com/mercadopago/sdk-go/pkg/config"
)

cfg, err := config.New("{{ACCESS_TOKEN}}")
if err != nil {
	fmt.Println(err)
}
```

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After completing these configurations, your development environment is ready to proceed with setting up a payment preference.