diff --git a/client/CMakeLists.txt b/client/CMakeLists.txt
index bdffc6e..59613d0 100644
--- a/client/CMakeLists.txt
+++ b/client/CMakeLists.txt
@@ -26,6 +26,7 @@
 wayland_client_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-extension.xml SOURCES webos-extension)
 wayland_client_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-foreign.xml SOURCES webos-foreign)
 wayland_client_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-tablet.xml SOURCES webos-tablet)
+wayland_client_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-system-ux.xml SOURCES webos-system-ux)
 
 webos_add_linker_options(ALL --no-undefined)
 
diff --git a/protocol/webos-system-ux.xml b/protocol/webos-system-ux.xml
new file mode 100644
index 0000000..4c4011f
--- /dev/null
+++ b/protocol/webos-system-ux.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="webos_system_ux">
+
+    <copyright>
+      Copyright (c) 2023 LG Electronics, Inc.
+
+      Licensed under the Apache License, Version 2.0 (the "License");
+      you may not use this file except in compliance with the License.
+      You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+    </copyright>
+
+    <interface name="wl_webos_system_ux" version="1">
+      <description summary="api to open sustem ui apps"/>
+
+      <event name="open">
+        <description summary="open system ux"/>
+        <arg name="app" type="string" summary="name of system ux app"/>
+      </event>
+
+      <request name="opened">
+          <description summary="report opened state of the system ux"/>
+          <arg name="app" type="string" summary="app name of system ux"/>
+      </request>
+
+      <event name="close">
+        <description summary="close system ux"/>
+        <arg name="app" type="string" summary="name of system ux app"/>
+      </event>
+
+      <request name="closed">
+          <description summary="report closed state of the system ux"/>
+          <arg name="app" type="string" summary="app name of system ux"/>
+      </request>
+
+      <request name="request_focus">
+          <description summary="request focus"/>
+          <arg name="name" type="string"/>
+      </request>
+
+      <request name="release_focus">
+          <description summary="release focus"/>
+          <arg name="name" type="string"/>
+      </request>
+
+    </interface>
+
+
+</protocol>
diff --git a/server/CMakeLists.txt b/server/CMakeLists.txt
index ae01b61..0c0c9af 100644
--- a/server/CMakeLists.txt
+++ b/server/CMakeLists.txt
@@ -26,6 +26,7 @@
 wayland_server_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-extension.xml SOURCES webos-extension)
 wayland_server_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-foreign.xml SOURCES webos-foreign)
 wayland_server_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-tablet.xml SOURCES webos-tablet)
+wayland_server_protocol(${CMAKE_SOURCE_DIR}/protocol/webos-system-ux.xml SOURCES webos-system-ux)
 
 webos_add_linker_options(ALL --no-undefined)