diff --git a/src/main/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactory.java b/src/main/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactory.java
index 7d183e3b..6254e1db 100644
--- a/src/main/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactory.java
+++ b/src/main/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactory.java
@@ -2,14 +2,22 @@
 
 import de.caritas.cob.agencyservice.tenantservice.generated.ApiClient;
 import de.caritas.cob.agencyservice.tenantservice.generated.web.TenantControllerApi;
+import jakarta.servlet.http.Cookie;
+import jakarta.servlet.http.HttpServletRequest;
+import java.util.Arrays;
+import java.util.Optional;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 import org.springframework.web.client.RestTemplate;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
 
 @Component
 public class TenantServiceApiControllerFactory {
 
+  private static final String DEFAULT_LANGUAGE = "de";
+  private static final String LANGUAGE_COOKIE_NAME = "lang";
   @Value("${tenant.service.api.url}")
   private String tenantServiceApiUrl;
 
@@ -18,6 +26,27 @@ public class TenantServiceApiControllerFactory {
 
   public TenantControllerApi createControllerApi() {
     var apiClient = new ApiClient(restTemplate).setBasePath(this.tenantServiceApiUrl);
+    apiClient.addDefaultCookie(LANGUAGE_COOKIE_NAME, getCurrentLanguageContext());
     return new TenantControllerApi(apiClient);
   }
+
+
+  public String getCurrentLanguageContext() {
+    HttpServletRequest currentRequest =
+        ((ServletRequestAttributes) RequestContextHolder.currentRequestAttributes()).getRequest();
+
+    if (currentRequest.getCookies() != null) {
+      Optional<Cookie> languageCookie = findLanguageCookie(currentRequest);
+      if (languageCookie.isPresent()) {
+        return languageCookie.get().getValue();
+      }
+    }
+    return DEFAULT_LANGUAGE;
+  }
+
+  private static Optional<Cookie> findLanguageCookie(HttpServletRequest currentRequest) {
+    return Arrays.stream(currentRequest.getCookies())
+        .filter(cookie -> LANGUAGE_COOKIE_NAME.equals(cookie.getName()))
+        .findFirst();
+  }
 }
diff --git a/src/test/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactoryTest.java b/src/test/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactoryTest.java
new file mode 100644
index 00000000..f4363a0f
--- /dev/null
+++ b/src/test/java/de/caritas/cob/agencyservice/config/apiclient/TenantServiceApiControllerFactoryTest.java
@@ -0,0 +1,33 @@
+package de.caritas.cob.agencyservice.config.apiclient;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class TenantServiceApiControllerFactoryTest {
+
+  @AfterEach
+  void tearDown() {
+    RequestContextHolder.resetRequestAttributes();
+  }
+
+  @Test
+  void createControllerApi_Should_CreateApiClientWithoutExceptions() {
+    // given
+    MockHttpServletRequest mockRequest = new MockHttpServletRequest();
+    mockRequest.addHeader("Authorization", "Bearer token");
+    RequestContextHolder.setRequestAttributes(new ServletRequestAttributes(mockRequest));
+
+    var tenantServiceApiControllerFactory = new TenantServiceApiControllerFactory();
+
+    // when
+    var tenantControllerApi = tenantServiceApiControllerFactory.createControllerApi();
+
+    // then
+    assertThat(tenantControllerApi).isNotNull();
+  }
+}
\ No newline at end of file