diff --git a/src/ApiGateways/Shopping.Aggregator/Services/IBasketService.cs b/src/ApiGateways/Shopping.Aggregator/Services/IBasketService.cs
new file mode 100644
index 0000000..dc5d55e
--- /dev/null
+++ b/src/ApiGateways/Shopping.Aggregator/Services/IBasketService.cs
@@ -0,0 +1,8 @@
+using Shopping.Aggregator.Models;
+
+namespace Shopping.Aggregator.Services;
+
+public interface IBasketService
+{
+    Task<BasketModel> GetBasket(string userName);
+}
\ No newline at end of file
diff --git a/src/ApiGateways/Shopping.Aggregator/Services/ICatalogService.cs b/src/ApiGateways/Shopping.Aggregator/Services/ICatalogService.cs
new file mode 100644
index 0000000..26e96cc
--- /dev/null
+++ b/src/ApiGateways/Shopping.Aggregator/Services/ICatalogService.cs
@@ -0,0 +1,10 @@
+using Shopping.Aggregator.Models;
+
+namespace Shopping.Aggregator.Services;
+
+public interface ICatalogService
+{
+    Task<IEnumerable<CatalogModel>> GetCatalog();
+    Task<IEnumerable<CatalogModel>> GetCatalogByCategory(string category);
+    Task<CatalogModel> GetCatalog(string id);
+}
\ No newline at end of file
diff --git a/src/ApiGateways/Shopping.Aggregator/Services/IOrderService.cs b/src/ApiGateways/Shopping.Aggregator/Services/IOrderService.cs
new file mode 100644
index 0000000..ac530f8
--- /dev/null
+++ b/src/ApiGateways/Shopping.Aggregator/Services/IOrderService.cs
@@ -0,0 +1,8 @@
+using Shopping.Aggregator.Models;
+
+namespace Shopping.Aggregator.Services;
+
+public interface IOrderService
+{
+    Task<IEnumerable<OrderResponseModel>> GetOrdersByUserName(string userName);
+}
\ No newline at end of file