diff --git a/interfaces.hpp b/interfaces.hpp
index 0dfa668..6c7651f 100644
--- a/interfaces.hpp
+++ b/interfaces.hpp
@@ -1,6 +1,8 @@
 #pragma once
 
 #include <com/ibm/Logging/Policy/server.hpp>
+#include <xyz/openbmc_project/Common/ObjectPath/server.hpp>
+#include <xyz/openbmc_project/Inventory/Decorator/Asset/server.hpp>
 
 namespace ibm
 {
@@ -10,11 +12,19 @@
 template <typename... T>
 using ServerObject = typename sdbusplus::server::object::object<T...>;
 
+using ObjectPathInterface =
+    sdbusplus::xyz::openbmc_project::Common::server::ObjectPath;
+
+using CalloutInterface =
+    sdbusplus::xyz::openbmc_project::Inventory::Decorator::server::Asset;
+using CalloutObject = ServerObject<CalloutInterface, ObjectPathInterface>;
+
 using PolicyInterface = sdbusplus::com::ibm::Logging::server::Policy;
 using PolicyObject = ServerObject<PolicyInterface>;
 
 enum class InterfaceType
 {
+    CALLOUT,
     POLICY
 };
 }