diff --git a/.cursor/rules/rules.mdc b/.cursor/rules/rules.mdc
new file mode 100644
index 00000000..8843aa52
--- /dev/null
+++ b/.cursor/rules/rules.mdc
@@ -0,0 +1,469 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+---
+description: 
+globs: 
+alwaysApply: false
+---
+# Mercado Pago PHP SDK - Cursor Rules
+
+## Visão Geral do Projeto
+Este é o SDK oficial do Mercado Pago para PHP, uma biblioteca de processamento de pagamentos que segue as melhores práticas PHP e convenções PSR. O SDK é distribuído via Composer e segue uma arquitetura modular com clara separação de responsabilidades.
+
+## Estrutura e Organização do Projeto
+
+### Estrutura de Diretórios Principal
+```
+src/
+├── MercadoPago/                 # Namespace principal
+│   ├── Client/                  # Clientes de API
+│   │   ├── Base/               # Classes base
+│   │   └── Resource/           # Clientes específicos
+│   ├── Config/                 # Configurações
+│   │   └── Config.php         # Classe de configuração
+│   ├── Core/                  # Funcionalidades principais
+│   │   ├── Annotation/       # Anotações personalizadas
+│   │   └── Http/            # Cliente HTTP
+│   ├── Entity/              # Entidades/Modelos
+│   │   ├── Payment.php     # Modelo de pagamento
+│   │   └── Preference.php  # Modelo de preferência
+│   ├── Exception/          # Exceções personalizadas
+│   └── Utils/             # Utilitários
+tests/
+├── Unit/                  # Testes unitários
+└── Integration/          # Testes de integração
+```
+
+## Convenções de Nomenclatura
+
+### Classes e Interfaces
+- **Namespaces**: `MercadoPago\{Module}` (ex: `MercadoPago\Client`)
+- **Clientes**: `{Resource}Client` (ex: `PaymentClient`, `PreferenceClient`)
+- **Modelos**: Nomes em PascalCase (ex: `Payment`, `Preference`)
+- **Interfaces**: Sufixo `Interface` (ex: `ClientInterface`, `PaymentInterface`)
+- **Exceções**: Sufixo `Exception` (ex: `MPException`, `ValidationException`)
+
+### Métodos e Variáveis
+- Métodos em camelCase
+- Propriedades em camelCase
+- Constantes em SCREAMING_SNAKE_CASE
+- Parâmetros em camelCase
+
+### Arquivos e Diretórios
+- Arquivos .php em PascalCase
+- Diretórios em PascalCase
+- Testes com sufixo Test
+- PSR-4 autoloading
+
+## Padrões de Código
+
+### Estilo PHP
+```php
+<?php
+
+namespace MercadoPago\Client;
+
+use MercadoPago\Entity\Payment;
+use MercadoPago\Exception\MPException;
+
+class PaymentClient extends BaseClient
+{
+    private const PATH = '/v1/payments';
+    
+    public function __construct(
+        private readonly HttpClientInterface $httpClient,
+        private readonly ConfigInterface $config
+    ) {
+        parent::__construct($httpClient, $config);
+    }
+    
+    public function create(array $paymentData): Payment
+    {
+        try {
+            $response = $this->post(self::PATH, $paymentData);
+            return Payment::fromArray($response);
+        } catch (Exception $e) {
+            throw new MPException('Error creating payment', 0, $e);
+        }
+    }
+}
+```
+
+### Modelos
+```php
+<?php
+
+namespace MercadoPago\Entity;
+
+use DateTimeImmutable;
+use JsonSerializable;
+
+class Payment implements JsonSerializable
+{
+    private string $id;
+    private float $amount;
+    private string $status;
+    private DateTimeImmutable $dateCreated;
+    private ?string $externalReference = null;
+    private array $metadata = [];
+    
+    public function __construct(array $data = [])
+    {
+        $this->populate($data);
+    }
+    
+    public function jsonSerialize(): array
+    {
+        return [
+            'id' => $this->id,
+            'amount' => $this->amount,
+            'status' => $this->status,
+            'date_created' => $this->dateCreated->format(DATE_ISO8601),
+            'external_reference' => $this->externalReference,
+            'metadata' => $this->metadata,
+        ];
+    }
+    
+    public static function fromArray(array $data): self
+    {
+        return new self($data);
+    }
+}
+```
+
+### Configuração
+```php
+<?php
+
+namespace MercadoPago\Config;
+
+class Config implements ConfigInterface
+{
+    private const DEFAULT_TIMEOUT = 5;
+    private const DEFAULT_BASE_URL = 'https://api.mercadopago.com';
+    
+    public function __construct(
+        private readonly string $accessToken,
+        private readonly ?int $timeout = self::DEFAULT_TIMEOUT,
+        private readonly ?string $baseUrl = self::DEFAULT_BASE_URL
+    ) {}
+    
+    public function getAccessToken(): string
+    {
+        return $this->accessToken;
+    }
+    
+    public function getTimeout(): int
+    {
+        return $this->timeout ?? self::DEFAULT_TIMEOUT;
+    }
+    
+    public function getBaseUrl(): string
+    {
+        return $this->baseUrl ?? self::DEFAULT_BASE_URL;
+    }
+}
+```
+
+## Práticas de Desenvolvimento
+
+### Geral
+- Seguir PSR-12 para estilo de código
+- Usar type hints e return types
+- Implementar interfaces para contratos
+- Seguir princípios SOLID
+- Documentar com PHPDoc
+
+### Tratamento de Erros
+```php
+<?php
+
+namespace MercadoPago\Exception;
+
+class MPException extends Exception
+{
+    private string $errorCode;
+    private array $details;
+    
+    public function __construct(
+        string $message,
+        string $errorCode = '',
+        array $details = [],
+        ?Throwable $previous = null
+    ) {
+        parent::__construct($message, 0, $previous);
+        $this->errorCode = $errorCode;
+        $this->details = $details;
+    }
+    
+    public function getErrorCode(): string
+    {
+        return $this->errorCode;
+    }
+    
+    public function getDetails(): array
+    {
+        return $this->details;
+    }
+}
+```
+
+### Logging
+```php
+<?php
+
+namespace MercadoPago\Service;
+
+use Psr\Log\LoggerInterface;
+
+class PaymentService
+{
+    public function __construct(
+        private readonly PaymentClient $client,
+        private readonly LoggerInterface $logger
+    ) {}
+    
+    public function processPayment(array $paymentData): Payment
+    {
+        $this->logger->info('Processing payment', ['data' => $paymentData]);
+        
+        try {
+            $payment = $this->client->create($paymentData);
+            $this->logger->info('Payment processed', ['id' => $payment->getId()]);
+            return $payment;
+        } catch (Exception $e) {
+            $this->logger->error('Payment processing failed', [
+                'error' => $e->getMessage(),
+                'data' => $paymentData
+            ]);
+            throw $e;
+        }
+    }
+}
+```
+
+## Testes
+
+### PHPUnit
+```php
+<?php
+
+namespace Tests\Unit\Client;
+
+use PHPUnit\Framework\TestCase;
+use MercadoPago\Client\PaymentClient;
+
+class PaymentClientTest extends TestCase
+{
+    private PaymentClient $client;
+    private MockObject $httpClient;
+    
+    protected function setUp(): void
+    {
+        $this->httpClient = $this->createMock(HttpClientInterface::class);
+        $this->client = new PaymentClient($this->httpClient, new Config('test-token'));
+    }
+    
+    public function testCreatePayment(): void
+    {
+        // Arrange
+        $paymentData = [
+            'amount' => 100.0,
+            'description' => 'Test payment'
+        ];
+        
+        $expected = [
+            'id' => 'test-id',
+            'status' => 'pending'
+        ];
+        
+        $this->httpClient
+            ->expects($this->once())
+            ->method('post')
+            ->with('/v1/payments', $paymentData)
+            ->willReturn($expected);
+            
+        // Act
+        $result = $this->client->create($paymentData);
+        
+        // Assert
+        $this->assertInstanceOf(Payment::class, $result);
+        $this->assertEquals('test-id', $result->getId());
+        $this->assertEquals('pending', $result->getStatus());
+    }
+}
+```
+
+## Documentação
+
+### PHPDoc
+```php
+/**
+ * Processa um pagamento usando a API do Mercado Pago.
+ *
+ * @param array $paymentData Os dados do pagamento
+ * @return Payment O pagamento processado
+ * @throws PaymentProcessingException Se houver erro no processamento
+ * @throws ValidationException Se os dados forem inválidos
+ */
+public function processPayment(array $paymentData): Payment
+{
+    // Implementação
+}
+```
+
+## Gerenciamento de Dependências
+
+### composer.json
+```json
+{
+    "name": "mercadopago/sdk-php",
+    "description": "Mercado Pago PHP SDK",
+    "type": "library",
+    "require": {
+        "php": ">=8.1",
+        "guzzlehttp/guzzle": "^7.0",
+        "psr/log": "^3.0",
+        "symfony/validator": "^6.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.5",
+        "phpstan/phpstan": "^1.0",
+        "squizlabs/php_codesniffer": "^3.6"
+    },
+    "autoload": {
+        "psr-4": {
+            "MercadoPago\\": "src/MercadoPago"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Tests\\": "tests/"
+        }
+    }
+}
+```
+
+## Segurança
+
+### Práticas
+- Validar todas as entradas
+- Usar HTTPS sempre
+- Implementar rate limiting
+- Seguir OWASP guidelines
+
+### Validação
+```php
+<?php
+
+namespace MercadoPago\Entity;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+class PaymentRequest
+{
+    #[Assert\NotBlank]
+    #[Assert\GreaterThan(0)]
+    private float $amount;
+    
+    #[Assert\NotBlank]
+    #[Assert\Length(max: 255)]
+    private string $description;
+    
+    #[Assert\Valid]
+    private ?PayerInfo $payer = null;
+    
+    public function validate(): array
+    {
+        $validator = Validation::createValidator();
+        return $validator->validate($this);
+    }
+}
+```
+
+## Performance
+
+### Otimizações
+- Usar connection pooling
+- Implementar caching
+- Configurar timeouts
+- Usar async quando apropriado
+
+### Cache
+```php
+<?php
+
+namespace MercadoPago\Cache;
+
+use Psr\Cache\CacheItemPoolInterface;
+
+class PaymentCache
+{
+    public function __construct(
+        private readonly CacheItemPoolInterface $cache
+    ) {}
+    
+    public function get(string $id): ?Payment
+    {
+        $item = $this->cache->getItem("payment.$id");
+        return $item->isHit() ? $item->get() : null;
+    }
+    
+    public function save(Payment $payment): void
+    {
+        $item = $this->cache->getItem("payment.{$payment->getId()}");
+        $item->set($payment);
+        $item->expiresAfter(3600);
+        $this->cache->save($item);
+    }
+}
+```
+
+## Qualidade de Código
+
+### Ferramentas
+- PHP_CodeSniffer para estilo
+- PHPStan para análise estática
+- PHPUnit para testes
+- SonarQube para qualidade
+
+### CI/CD
+- GitHub Actions
+- Composer scripts
+- Testes automatizados
+- Deploy automático
+
+## Configuração do Editor
+
+### VSCode/PHPStorm
+```json
+{
+    "php.suggest.basic": false,
+    "php.validate.enable": true,
+    "php.format.rules.alignLineComments": true,
+    "php.format.rules.spacesBeforeBrace": true
+}
+```
+
+## Scripts Composer
+
+### composer.json
+```json
+{
+    "scripts": {
+        "test": "phpunit",
+        "test:coverage": "phpunit --coverage-html coverage",
+        "cs": "phpcs --standard=PSR12 src tests",
+        "cs:fix": "phpcbf --standard=PSR12 src tests",
+        "stan": "phpstan analyse src tests",
+        "check": [
+            "@cs",
+            "@stan",
+            "@test"
+        ]
+    }
+}
+```
diff --git a/examples/Chargeback/Get.php b/examples/Chargeback/Get.php
new file mode 100644
index 00000000..47739193
--- /dev/null
+++ b/examples/Chargeback/Get.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Examples\Chargeback;
+
+// Step 1: Require the Composer library
+require_once '../../vendor/autoload.php';
+
+use MercadoPago\Client\Chargeback\ChargebackClient;
+use MercadoPago\Client\Common\RequestOptions;
+use MercadoPago\Exceptions\MPApiException;
+use MercadoPago\MercadoPagoConfig;
+
+// Step 2: Set the production or sandbox access token
+MercadoPagoConfig::setAccessToken("<YOUR_ACCESS_TOKEN>");
+
+// Step 3: Initialize the API client
+$client = new ChargebackClient();
+
+try {
+    // Step 4: Get chargeback by ID
+    $chargeback_id = "CHARGEBACK_ID";
+    $chargeback = $client->get($chargeback_id);
+
+    echo "Chargeback ID: " . $chargeback->id . "\n";
+    echo "Payment ID: " . $chargeback->payment_id . "\n";
+    echo "Amount: " . $chargeback->amount . "\n";
+    echo "Status: " . $chargeback->status . "\n";
+    echo "Reason: " . $chargeback->reason . "\n";
+    echo "Stage: " . $chargeback->stage . "\n";
+
+    // Step 5: Handle exceptions
+} catch (MPApiException $e) {
+    echo "Status code: " . $e->getApiResponse()->getStatusCode() . "\n";
+    echo "Content: ";
+    var_dump($e->getApiResponse()->getContent());
+    echo "\n";
+} catch (\Exception $e) {
+    echo $e->getMessage();
+} 
\ No newline at end of file
diff --git a/examples/Chargeback/Search.php b/examples/Chargeback/Search.php
new file mode 100644
index 00000000..962338e7
--- /dev/null
+++ b/examples/Chargeback/Search.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Examples\Chargeback;
+
+// Step 1: Require the Composer library
+require_once '../../vendor/autoload.php';
+
+use MercadoPago\Client\Chargeback\ChargebackClient;
+use MercadoPago\Client\Common\RequestOptions;
+use MercadoPago\Exceptions\MPApiException;
+use MercadoPago\MercadoPagoConfig;
+use MercadoPago\Net\MPSearchRequest;
+
+// Step 2: Set the production or sandbox access token
+MercadoPagoConfig::setAccessToken("<YOUR_ACCESS_TOKEN>");
+
+// Step 3: Initialize the API client
+$client = new ChargebackClient();
+
+try {
+    // Step 4: Create search filters
+    $search_filters = array(
+        "payment_id" => "PAYMENT_ID", // Optional: filter by payment ID
+        "status" => "open", // Optional: filter by status (open, closed, etc.)
+        "stage" => "chargeback", // Optional: filter by stage
+        "offset" => 0,
+        "limit" => 50
+    );
+
+    $search_request = new MPSearchRequest($search_filters);
+
+    // Step 5: Perform the search
+    $search_result = $client->search($search_request);
+
+    echo "Total results: " . $search_result->paging->total . "\n";
+    echo "Results found: " . count($search_result->results) . "\n\n";
+
+    // Step 6: Display results
+    foreach ($search_result->results as $chargeback) {
+        echo "Chargeback ID: " . $chargeback->id . "\n";
+        echo "Payment ID: " . $chargeback->payment_id . "\n";
+        echo "Amount: " . $chargeback->amount . " " . $chargeback->currency . "\n";
+        echo "Status: " . $chargeback->status . "\n";
+        echo "Reason: " . $chargeback->reason . "\n";
+        echo "Date Created: " . $chargeback->date_created . "\n";
+        echo "---\n";
+    }
+
+    // Step 7: Handle exceptions
+} catch (MPApiException $e) {
+    echo "Status code: " . $e->getApiResponse()->getStatusCode() . "\n";
+    echo "Content: ";
+    var_dump($e->getApiResponse()->getContent());
+    echo "\n";
+} catch (\Exception $e) {
+    echo $e->getMessage();
+} 
\ No newline at end of file
diff --git a/src/MercadoPago/Client/Chargeback/ChargebackClient.php b/src/MercadoPago/Client/Chargeback/ChargebackClient.php
new file mode 100644
index 00000000..51a9bce2
--- /dev/null
+++ b/src/MercadoPago/Client/Chargeback/ChargebackClient.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace MercadoPago\Client\Chargeback;
+
+use MercadoPago\Client\Common\RequestOptions;
+use MercadoPago\Client\MercadoPagoClient;
+use MercadoPago\MercadoPagoConfig;
+use MercadoPago\Net\HttpMethod;
+use MercadoPago\Net\MPHttpClient;
+use MercadoPago\Net\MPSearchRequest;
+use MercadoPago\Resources\Chargeback;
+use MercadoPago\Resources\ChargebackSearch;
+use MercadoPago\Serialization\Serializer;
+
+/** Client responsible for performing chargeback actions. */
+final class ChargebackClient extends MercadoPagoClient
+{
+    private const URL = "/v1/chargebacks";
+
+    private const URL_WITH_ID = "/v1/chargebacks/%s";
+
+    private const URL_SEARCH = "/v1/chargebacks/search";
+
+    /** Default constructor. Uses the default http client used by the SDK or custom http client provided. */
+    public function __construct(?MPHttpClient $MPHttpClient = null)
+    {
+        parent::__construct($MPHttpClient ?: MercadoPagoConfig::getHttpClient());
+    }
+
+    /**
+     * Method responsible for getting chargeback.
+     * @param string $id chargeback ID.
+     * @param \MercadoPago\Client\Common\RequestOptions request options to be sent.
+     * @return \MercadoPago\Resources\Chargeback chargeback found.
+     * @throws \MercadoPago\Exceptions\MPApiException if the request fails.
+     * @throws \Exception if the request fails.
+     */
+    public function get(string $id, ?RequestOptions $request_options = null): Chargeback
+    {
+        $response = parent::send(sprintf(self::URL_WITH_ID, $id), HttpMethod::GET, null, null, $request_options);
+        $result = Serializer::deserializeFromJson(Chargeback::class, $response->getContent());
+        $result->setResponse($response);
+        return $result;
+    }
+
+    /**
+     * Method responsible for search chargebacks.
+     * @param \MercadoPago\Net\MPSearchRequest $request search request.
+     * @param \MercadoPago\Client\Common\RequestOptions request options to be sent.
+     * @return \MercadoPago\Resources\ChargebackSearch search results.
+     * @throws \MercadoPago\Exceptions\MPApiException if the request fails.
+     * @throws \Exception if the request fails.
+     */
+    public function search(MPSearchRequest $request, ?RequestOptions $request_options = null): ChargebackSearch
+    {
+        $query_params = isset($request) ? $request->getParameters() : null;
+        $response = parent::send(self::URL_SEARCH, HttpMethod::GET, null, $query_params, $request_options);
+        $result = Serializer::deserializeFromJson(ChargebackSearch::class, $response->getContent());
+        $result->setResponse($response);
+        return $result;
+    }
+} 
\ No newline at end of file
diff --git a/src/MercadoPago/Resources/Chargeback.php b/src/MercadoPago/Resources/Chargeback.php
new file mode 100644
index 00000000..1db8efc8
--- /dev/null
+++ b/src/MercadoPago/Resources/Chargeback.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace MercadoPago\Resources;
+
+use MercadoPago\Net\MPResource;
+use MercadoPago\Serialization\Mapper;
+
+/** Chargeback class. */
+class Chargeback extends MPResource
+{
+    /** Class mapper. */
+    use Mapper;
+
+    /** Chargeback ID. */
+    public ?string $id;
+
+    /** Payment ID associated with the chargeback. */
+    public ?int $payment_id;
+
+    /** Chargeback amount. */
+    public ?float $amount;
+
+    /** Currency of the chargeback. */
+    public ?string $currency;
+
+    /** Chargeback reason. */
+    public ?string $reason;
+
+    /** Stage of the chargeback. */
+    public ?string $stage;
+
+    /** Status of the chargeback. */
+    public ?string $status;
+
+    /** Date when the chargeback was created. */
+    public ?string $date_created;
+
+    /** Date when the chargeback was last updated. */
+    public ?string $date_last_updated;
+
+    /** Documentation deadline for the chargeback. */
+    public ?string $documentation_deadline;
+
+    /** Coverage applied to the chargeback. */
+    public ?bool $coverage_applied;
+
+    /** Coverage eligible for the chargeback. */
+    public ?bool $coverage_eligible;
+
+    /** External reference of the chargeback. */
+    public ?string $external_reference;
+
+    /** Metadata associated with the chargeback. */
+    public array|object|null $metadata;
+
+    /** Documentation status. */
+    public ?string $documentation_status;
+
+    /** Chargeback sequence number. */
+    public ?int $chargeback_sequence_number;
+
+    /** Source information. */
+    public array|object|null $source;
+
+    /** Case information. */
+    public array|object|null $case;
+
+    /** Risk score. */
+    public ?float $risk_score;
+
+    /** Payment method information. */
+    public array|object|null $payment_method;
+
+    /** Transaction details. */
+    public array|object|null $transaction_details;
+
+    private $map = [
+        "source" => "MercadoPago\Resources\Common\Source",
+        "payment_method" => "MercadoPago\Resources\Payment\PaymentMethod",
+        "transaction_details" => "MercadoPago\Resources\Payment\TransactionDetails",
+    ];
+
+    /**
+     * Method responsible for getting map of entities.
+     */
+    public function getMap(): array
+    {
+        return $this->map;
+    }
+} 
\ No newline at end of file
diff --git a/src/MercadoPago/Resources/ChargebackSearch.php b/src/MercadoPago/Resources/ChargebackSearch.php
new file mode 100644
index 00000000..c3968dd6
--- /dev/null
+++ b/src/MercadoPago/Resources/ChargebackSearch.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace MercadoPago\Resources;
+
+use MercadoPago\Net\MPResource;
+use MercadoPago\Serialization\Mapper;
+
+/** ChargebackSearch class. */
+class ChargebackSearch extends MPResource
+{
+    /** Class mapper. */
+    use Mapper;
+
+    /** Paging information. */
+    public array|object|null $paging;
+
+    /** List of chargebacks. */
+    public ?array $results;
+
+    private $map = [
+        "results" => "MercadoPago\Resources\Chargeback",
+        "paging" => "MercadoPago\Resources\Common\Paging",
+    ];
+
+    /**
+     * Method responsible for getting map of entities.
+     */
+    public function getMap(): array
+    {
+        return $this->map;
+    }
+} 
\ No newline at end of file
diff --git a/tests/MercadoPago/Client/Unit/Chargeback/ChargebackClientUnitTest.php b/tests/MercadoPago/Client/Unit/Chargeback/ChargebackClientUnitTest.php
new file mode 100644
index 00000000..49885e2a
--- /dev/null
+++ b/tests/MercadoPago/Client/Unit/Chargeback/ChargebackClientUnitTest.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace MercadoPago\Tests\Client\Unit\Chargeback;
+
+use MercadoPago\Client\Chargeback\ChargebackClient;
+use MercadoPago\MercadoPagoConfig;
+use MercadoPago\Net\MPDefaultHttpClient;
+use MercadoPago\Net\MPSearchRequest;
+use MercadoPago\Tests\Client\Unit\Base\BaseClient;
+
+/**
+ * ChargebackClient unit tests.
+ */
+final class ChargebackClientUnitTest extends BaseClient
+{
+    public function testGetSuccess(): void
+    {
+        $filepath = '../../../../Resources/Mocks/Response/Chargeback/chargeback_base.json';
+        $mock_http_request = $this->mockHttpRequest($filepath, 200);
+
+        $http_client = new MPDefaultHttpClient($mock_http_request);
+        MercadoPagoConfig::setHttpClient($http_client);
+
+        $client = new ChargebackClient();
+        $chargeback = $client->get("123456");
+        
+        $this->assertSame(200, $chargeback->getResponse()->getStatusCode());
+        $this->assertSame("123456", $chargeback->id);
+        $this->assertSame(987654321, $chargeback->payment_id);
+        $this->assertSame(100.0, $chargeback->amount);
+        $this->assertSame("BRL", $chargeback->currency);
+        $this->assertSame("fraud", $chargeback->reason);
+        $this->assertSame("chargeback", $chargeback->stage);
+        $this->assertSame("open", $chargeback->status);
+    }
+
+    public function testSearchSuccess(): void
+    {
+        $filepath = '../../../../Resources/Mocks/Response/Chargeback/chargeback_search.json';
+        $mock_http_request = $this->mockHttpRequest($filepath, 200);
+
+        $http_client = new MPDefaultHttpClient($mock_http_request);
+        MercadoPagoConfig::setHttpClient($http_client);
+
+        $client = new ChargebackClient();
+        $filters = array("payment_id" => "987654321");
+        $search_request = new MPSearchRequest(50, 0, $filters);
+        $search_result = $client->search($search_request);
+        
+        $this->assertSame(200, $search_result->getResponse()->getStatusCode());
+        $this->assertSame(1, $search_result->paging->total);
+        $this->assertSame(1, count($search_result->results));
+        $this->assertSame("123456", $search_result->results[0]->id);
+        $this->assertSame(987654321, $search_result->results[0]->payment_id);
+    }
+} 
\ No newline at end of file
diff --git a/tests/MercadoPago/Resources/Mocks/Response/Chargeback/chargeback_base.json b/tests/MercadoPago/Resources/Mocks/Response/Chargeback/chargeback_base.json
new file mode 100644
index 00000000..f6f8983d
--- /dev/null
+++ b/tests/MercadoPago/Resources/Mocks/Response/Chargeback/chargeback_base.json
@@ -0,0 +1,42 @@
+{
+  "id": "123456",
+  "payment_id": 987654321,
+  "amount": 100.0,
+  "currency": "BRL",
+  "reason": "fraud",
+  "stage": "chargeback",
+  "status": "open",
+  "date_created": "2023-01-15T10:30:00.000-04:00",
+  "date_last_updated": "2023-01-15T10:30:00.000-04:00",
+  "documentation_deadline": "2023-01-22T23:59:59.000-04:00",
+  "coverage_applied": false,
+  "coverage_eligible": true,
+  "external_reference": "ext_ref_123",
+  "metadata": {
+    "key1": "value1",
+    "key2": "value2"
+  },
+  "documentation_status": "pending",
+  "chargeback_sequence_number": 1,
+  "source": {
+    "id": "475845652",
+    "name": "Test Source",
+    "type": "collector"
+  },
+  "case": {
+    "id": "case_123",
+    "number": "CB-123456789",
+    "type": "chargeback"
+  },
+  "risk_score": 75.5,
+  "payment_method": {
+    "id": "visa",
+    "type": "credit_card"
+  },
+  "transaction_details": {
+    "net_received_amount": 95.0,
+    "total_paid_amount": 100.0,
+    "overpaid_amount": 0,
+    "installment_amount": 100.0
+  }
+} 
\ No newline at end of file
diff --git a/tests/MercadoPago/Resources/Mocks/Response/Chargeback/chargeback_search.json b/tests/MercadoPago/Resources/Mocks/Response/Chargeback/chargeback_search.json
new file mode 100644
index 00000000..a162707c
--- /dev/null
+++ b/tests/MercadoPago/Resources/Mocks/Response/Chargeback/chargeback_search.json
@@ -0,0 +1,51 @@
+{
+  "paging": {
+    "total": 1,
+    "limit": 50,
+    "offset": 0
+  },
+  "results": [
+    {
+      "id": "123456",
+      "payment_id": 987654321,
+      "amount": 100.0,
+      "currency": "BRL",
+      "reason": "fraud",
+      "stage": "chargeback",
+      "status": "open",
+      "date_created": "2023-01-15T10:30:00.000-04:00",
+      "date_last_updated": "2023-01-15T10:30:00.000-04:00",
+      "documentation_deadline": "2023-01-22T23:59:59.000-04:00",
+      "coverage_applied": false,
+      "coverage_eligible": true,
+      "external_reference": "ext_ref_123",
+      "metadata": {
+        "key1": "value1",
+        "key2": "value2"
+      },
+      "documentation_status": "pending",
+      "chargeback_sequence_number": 1,
+      "source": {
+        "id": "475845652",
+        "name": "Test Source",
+        "type": "collector"
+      },
+      "case": {
+        "id": "case_123",
+        "number": "CB-123456789",
+        "type": "chargeback"
+      },
+      "risk_score": 75.5,
+      "payment_method": {
+        "id": "visa",
+        "type": "credit_card"
+      },
+      "transaction_details": {
+        "net_received_amount": 95.0,
+        "total_paid_amount": 100.0,
+        "overpaid_amount": 0,
+        "installment_amount": 100.0
+      }
+    }
+  ]
+} 
\ No newline at end of file