diff --git a/system/mrm_comfortable_stop_operator/schema/mrm_comfortablex_stop_operator.json b/system/mrm_comfortable_stop_operator/schema/mrm_comfortablex_stop_operator.json
new file mode 100644
index 0000000000000..a8e7959fa479b
--- /dev/null
+++ b/system/mrm_comfortable_stop_operator/schema/mrm_comfortablex_stop_operator.json
@@ -0,0 +1,45 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Parameters for mrm_comfortable_stop_operator",
+  "type": "object",
+  "definitions": {
+    "mrm_comfortable_stop_operator": {
+      "type": "object",
+      "properties": {
+        "update_rate": {
+          "type": "number",
+          "default": 10,
+          "description": "Timer callback frequency [Hz]."
+        },
+        "min_acceleration": {
+          "type": "number",
+          "default": -1.0,
+          "description": "Minimum acceleration for comfortable stop [m/s^2]."
+        },
+        "max_jerk": {
+          "type": "number",
+          "default": 0.3,
+          "description": "Maximum jerk for comfortable stop [m/s^3]."
+        },
+        "min_jerk": {
+          "type": "number",
+          "default": -0.3,
+          "description": "Minimum jerk for comfortable stop [m/s^3]."
+        }
+      },
+      "required": ["update_rate", "min_acceleration", "max_jerk", "min_jerk"]
+    }
+  },
+  "properties": {
+    "/**": {
+      "type": "object",
+      "properties": {
+        "ros__parameters": {
+          "$ref": "#/definitions/mrm_comfortable_stop_operator"
+        }
+      },
+      "required": ["ros__parameters"]
+    }
+  },
+  "required": ["/**"]
+}
diff --git a/system/mrm_comfortable_stop_operator/src/mrm_comfortable_stop_operator/mrm_comfortable_stop_operator_core.cpp b/system/mrm_comfortable_stop_operator/src/mrm_comfortable_stop_operator/mrm_comfortable_stop_operator_core.cpp
index 5c9562463f891..dcc8290be4701 100644
--- a/system/mrm_comfortable_stop_operator/src/mrm_comfortable_stop_operator/mrm_comfortable_stop_operator_core.cpp
+++ b/system/mrm_comfortable_stop_operator/src/mrm_comfortable_stop_operator/mrm_comfortable_stop_operator_core.cpp
@@ -21,10 +21,10 @@ MrmComfortableStopOperator::MrmComfortableStopOperator(const rclcpp::NodeOptions
 : Node("mrm_comfortable_stop_operator", node_options)
 {
   // Parameter
-  params_.update_rate = static_cast<int>(declare_parameter<int>("update_rate", 1));
-  params_.min_acceleration = declare_parameter<double>("min_acceleration", -1.0);
-  params_.max_jerk = declare_parameter<double>("max_jerk", 0.3);
-  params_.min_jerk = declare_parameter<double>("min_jerk", 0.3);
+  params_.update_rate = static_cast<int>(declare_parameter<int>("update_rate"));
+  params_.min_acceleration = declare_parameter<double>("min_acceleration");
+  params_.max_jerk = declare_parameter<double>("max_jerk");
+  params_.min_jerk = declare_parameter<double>("min_jerk");
 
   // Server
   service_operation_ = create_service<tier4_system_msgs::srv::OperateMrm>(