diff --git a/src/main/java/city/makeour/moc/MocClient.java b/src/main/java/city/makeour/moc/MocClient.java
index fedfcdd..e0d34af 100644
--- a/src/main/java/city/makeour/moc/MocClient.java
+++ b/src/main/java/city/makeour/moc/MocClient.java
@@ -92,4 +92,58 @@ public void setFiwareService(String fiwareService) {
     public ResponseSpec createEntity(String contentType, Object body) {
         return this.client.createEntity(contentType, body);
     }
+
+    /**
+     * Retrieves an entity with the specified parameters.
+     *
+     * @param entityId The ID of the entity to retrieve.
+     * @param type The type of the entity.
+     * @param attrs Comma-separated list of attribute names to include in the response. If null, all attributes are returned.
+     * @param metadata Comma-separated list of metadata names to include. If null, all metadata is returned.
+     * @param options Options to modify the response format (e.g., "keyValues" for simplified representation).
+     * @return The response specification for the entity retrieval request.
+     * 
+     * <p>
+     * Use this overload to fully customize the entity retrieval, including which attributes,
+     * metadata, and options are used. The {@code options} parameter allows you to control
+     * the response format; for example, "keyValues" returns a simplified JSON object.
+     * </p>
+     */
+    public ResponseSpec getEntity(String entityId, String type, String attrs, String metadata, String options) {
+        return this.entities().retrieveEntityWithResponseSpec(entityId, type, attrs, metadata, "keyValues");
+    }
+
+    /**
+     * Retrieves an entity with the specified ID, type, and attributes.
+     *
+     * @param entityId The ID of the entity to retrieve.
+     * @param type The type of the entity.
+     * @param attrs Comma-separated list of attribute names to include in the response. If null, all attributes are returned.
+     * @return The response specification for the entity retrieval request.
+     *
+     * <p>
+     * This overload defaults {@code metadata} to {@code null} (all metadata) and {@code options} to {@code "keyValues"}
+     * for a simplified response format.
+     * </p>
+     */
+    public ResponseSpec getEntity(String entityId, String type, String attrs) {
+        return this.entities().retrieveEntityWithResponseSpec(entityId, type, attrs, null, "keyValues");
+    }
+
+    /**
+     * Retrieves an entity with the specified ID and type.
+     *
+     * @param entityId The ID of the entity to retrieve.
+     * @param type The type of the entity.
+     * @return The response specification for the entity retrieval request.
+     *
+     * <p>
+     * This overload defaults {@code attrs} and {@code metadata} to {@code null} (all attributes and metadata),
+     * and {@code options} to {@code "keyValues"} for a simplified response format.
+     * </p>
+     */
+    public ResponseSpec getEntity(String entityId, String type) {
+        return this.entities().retrieveEntityWithResponseSpec(entityId, type, null, null, "keyValues");
+    }
+
 }
diff --git a/src/test/java/city/makeour/moc/MocClientTest.java b/src/test/java/city/makeour/moc/MocClientTest.java
index 403a04c..acc9b68 100644
--- a/src/test/java/city/makeour/moc/MocClientTest.java
+++ b/src/test/java/city/makeour/moc/MocClientTest.java
@@ -16,6 +16,7 @@
 import city.makeour.ngsi.v2.api.EntitiesApi;
 import city.makeour.ngsi.v2.model.CreateEntityRequest;
 import city.makeour.ngsi.v2.model.ListEntitiesResponse;
+import city.makeour.ngsi.v2.model.RetrieveEntityResponse;
 
 class MocClientTest {
 
@@ -94,6 +95,7 @@ void testSetMocAuthInfo() throws GeneralSecurityException, NoSuchAlgorithmExcept
             @EnabledIfEnvironmentVariable(named = "TEST_COGNITO_USERNAME", matches = ".*"),
             @EnabledIfEnvironmentVariable(named = "TEST_COGNITO_PASSWORD", matches = ".*")
     })
+
     void testAuth() throws GeneralSecurityException, NoSuchAlgorithmException {
         String cognitoUserPoolId = System.getenv("TEST_COGNITO_USER_POOL_ID");
         String cognitoClientId = System.getenv("TEST_COGNITO_CLIENT_ID");
@@ -113,4 +115,35 @@ void testAuth() throws GeneralSecurityException, NoSuchAlgorithmException {
 
         client.entities().createEntity("application/json", entity, "keyValues");
     }
+
+    @Test
+    @DisplayName("エンティティを作成・取得できるかのテスト（最小版）")
+    @EnabledIfEnvironmentVariables({
+        @EnabledIfEnvironmentVariable(named = "TEST_COGNITO_USER_POOL_ID", matches = ".*"),
+        @EnabledIfEnvironmentVariable(named = "TEST_COGNITO_CLIENT_ID", matches = ".*"),
+        @EnabledIfEnvironmentVariable(named = "TEST_COGNITO_USERNAME", matches = ".*"),
+        @EnabledIfEnvironmentVariable(named = "TEST_COGNITO_PASSWORD", matches = ".*")
+    })
+    void testCreateAndGetEntity_Minimal() throws GeneralSecurityException, NoSuchAlgorithmException {
+        MocClient client = new MocClient();
+        client.setMocAuthInfo(System.getenv("TEST_COGNITO_USER_POOL_ID"), System.getenv("TEST_COGNITO_CLIENT_ID"));
+        client.login(System.getenv("TEST_COGNITO_USERNAME"), System.getenv("TEST_COGNITO_PASSWORD"));
+
+        // 作成&取得
+        String entityId = "urn:ngsi-ld:TestEntity:" + UUID.randomUUID().toString();
+        CreateEntityRequest entity = new CreateEntityRequest();
+        entity.setType("TestEntity");
+        entity.setId(entityId);
+
+        // 作成を実行
+        client.entities().createEntity("application/json", entity, "keyValues");
+
+        // getEntityの呼び出し、レスポンスの変換
+        RetrieveEntityResponse retrievedEntity = client
+                .getEntity(entityId, "TestEntity", null, null, null)
+                .body(RetrieveEntityResponse.class);
+
+        assertNotNull(retrievedEntity);
+        assertEquals(entityId, retrievedEntity.getId());
+    }
 }