diff --git a/rpc/device.go b/rpc/device.go
index 1836cdd..ae966aa 100644
--- a/rpc/device.go
+++ b/rpc/device.go
@@ -7,6 +7,7 @@ const (
 	DEVICE_DELETE
 	DEVICE_READ
 	DEVICE_WRITE
+	DEVICE_STATUS
 	DEVICE_EVENT
 	DEVICE_ACTION
 )
diff --git a/rpc/fs.go b/rpc/fs.go
index dd051a7..4c956ec 100644
--- a/rpc/fs.go
+++ b/rpc/fs.go
@@ -1,5 +1,16 @@
 package rpc
 
+const (
+	FS_LIST uint8 = iota
+	FS_STATE
+	FS_DOWNLOAD
+	FS_UPLOAD
+	FS_REMOVE
+	FS_MOVE
+	FS_MKDIR
+	FS_FORMAT
+)
+
 type FsPath struct {
 	Path string `json:"path"`
 }
diff --git a/rpc/gateway.go b/rpc/gateway.go
index ce2be03..9c08967 100644
--- a/rpc/gateway.go
+++ b/rpc/gateway.go
@@ -1,5 +1,12 @@
 package rpc
 
+const (
+	GATEWAY_STATUS uint8 = iota
+	GATEWAY_EVENT
+	GATEWAY_SETTING
+	GATEWAY_METRICS
+)
+
 type GatewayStatusRequest struct {
 	Battery int `json:"battery,omitempty"`
 	Rssi    int `json:"rssi,omitempty"`
diff --git a/rpc/gpio.go b/rpc/gpio.go
index 94fbaa3..4a87d47 100644
--- a/rpc/gpio.go
+++ b/rpc/gpio.go
@@ -1,5 +1,12 @@
 package rpc
 
+const (
+	GPIO_LIST uint8 = iota
+	GPIO_WRITE
+	GPIO_READ
+	GPIO_STATUS
+)
+
 type GpioPath struct {
 	Path string `json:"path"`
 }
diff --git a/rpc/product.go b/rpc/product.go
index d5e2226..f0652d6 100644
--- a/rpc/product.go
+++ b/rpc/product.go
@@ -1,5 +1,12 @@
 package rpc
 
+const (
+	PRODUCT_LIST uint8 = iota
+	PRODUCT_DOWNLOAD
+	PRODUCT_UPLOAD
+	PRODUCT_DELETE
+)
+
 type ProductId struct {
 	Id string `json:"id"`
 }
diff --git a/rpc/serial.go b/rpc/serial.go
index cf9d263..66c3730 100644
--- a/rpc/serial.go
+++ b/rpc/serial.go
@@ -1,5 +1,13 @@
 package rpc
 
+const (
+	SERIAL_LIST uint8 = iota
+	SERIAL_OPEN
+	SERIAL_CLOSE
+	SERIAL_WATCH
+	SERIAL_PIPE
+)
+
 type SerialId struct {
 	Id string `json:"id"`
 }
diff --git a/rpc/tcp.go b/rpc/tcp.go
index 42e86bc..4523961 100644
--- a/rpc/tcp.go
+++ b/rpc/tcp.go
@@ -1,5 +1,14 @@
 package rpc
 
+const (
+	TCP_LIST uint8 = iota
+	TCP_CREATE
+	TCP_DELETE
+	TCP_RESTART
+	TCP_WATCH
+	TCP_PIPE
+)
+
 type TcpId struct {
 	Id string `json:"id"`
 }