diff --git a/vpd-tool/include/tool_constants.hpp b/vpd-tool/include/tool_constants.hpp
index 84b7025..00c64b8 100644
--- a/vpd-tool/include/tool_constants.hpp
+++ b/vpd-tool/include/tool_constants.hpp
@@ -24,7 +24,7 @@
 constexpr auto vpdManagerObjectPath = "/com/ibm/VPD/Manager";
 constexpr auto vpdManagerInfName = "com.ibm.VPD.Manager";
 constexpr auto inventoryItemInf = "xyz.openbmc_project.Inventory.Item";
-constexpr auto kwdVpdInf = "com.ibm.ipzvpd.VINI";
+constexpr auto viniInf = "com.ibm.ipzvpd.VINI";
 constexpr auto locationCodeInf = "com.ibm.ipzvpd.Location";
 constexpr auto assetInf = "xyz.openbmc_project.Inventory.Decorator.Asset";
 constexpr auto objectMapperService = "xyz.openbmc_project.ObjectMapper";
@@ -38,5 +38,11 @@
 constexpr auto dbusObjectPath = "/org/freedesktop/DBus";
 constexpr auto dbusInterface = "org.freedesktop.DBus";
 constexpr auto biosConfigMgrService = "xyz.openbmc_project.BIOSConfigManager";
+constexpr auto networkInf =
+    "xyz.openbmc_project.Inventory.Item.NetworkInterface";
+constexpr auto pcieSlotInf = "xyz.openbmc_project.Inventory.Item.PCIeSlot";
+constexpr auto slotNumInf = "xyz.openbmc_project.Inventory.Decorator.Slot";
+constexpr auto i2cDeviceInf =
+    "xyz.openbmc_project.Inventory.Decorator.I2CDevice";
 } // namespace constants
 } // namespace vpd
diff --git a/vpd-tool/include/vpd_tool.hpp b/vpd-tool/include/vpd_tool.hpp
index 67a52fc..0004949 100644
--- a/vpd-tool/include/vpd_tool.hpp
+++ b/vpd-tool/include/vpd_tool.hpp
@@ -43,6 +43,38 @@
     nlohmann::json getFruProperties(const std::string& i_objectPath) const;
 
     /**
+     * @brief API to populate FRU JSON.
+     *
+     * The API will create FRUs JSON, which will have property value pairs for
+     * all the interfaces required for that particular FRU.
+     *
+     * @param[in] i_inventoryObjPath - FRU inventory path.
+     * @param[in, out] io_fruJsonObject - JSON object.
+     * @param[in] i_interfaceList - list of interfaces implemented by the FRU on
+     * Dbus.
+     */
+    void populateFruJson(const std::string& i_inventoryObjPath,
+                         nlohmann::json& io_fruJsonObject,
+                         const std::vector<std::string>& i_interfaceList) const;
+
+    /**
+     * @brief API to populate JSON for an interface.
+     *
+     * The API will create interface JSON, which will have property value pairs
+     * for all the properties required under that interface.
+     *
+     * @param[in] i_inventoryObjPath - FRU inventory path.
+     * @param[in] i_infName - interface whose JSON need to be populated.
+     * @param[in] i_propList - List of properties needed in the JSON.
+     * @param[in, out] io_fruJsonObject - JSON object.
+     */
+    template <typename PropertyType>
+    void populateInterfaceJson(const std::string& i_inventoryObjPath,
+                               const std::string& i_infName,
+                               const std::vector<std::string>& i_propList,
+                               nlohmann::json& io_fruJsonObject) const;
+
+    /**
      * @brief Get any inventory property in JSON.
      *
      * API to get any property of a FRU in JSON format. Given an object path,