diff --git a/custom/command_client.go b/custom/command_client.go
index 89e3f42..fbdc8e9 100644
--- a/custom/command_client.go
+++ b/custom/command_client.go
@@ -42,9 +42,51 @@ func (cch *CommandClientHandler) WriteStatus(message *libbox.StatusMessage) {
 	}
 }
 
-func (cch *CommandClientHandler) WriteGroups(message libbox.OutboundGroupIterator) {}
+func (cch *CommandClientHandler) WriteGroups(message libbox.OutboundGroupIterator) {
+	if message == nil {
+		return
+	}
+	groups := []*OutboundGroup{}
+	for message.HasNext() {
+		group := message.Next()
+		items := group.GetItems()
+		groupItems := []*OutboundGroupItem{}
+		for items.HasNext() {
+			item := items.Next()
+			groupItems = append(groupItems,
+				&OutboundGroupItem{
+					Tag:          item.Tag,
+					Type:         item.Type,
+					URLTestTime:  item.URLTestTime,
+					URLTestDelay: item.URLTestDelay,
+				},
+			)
+		}
+		groups = append(groups, &OutboundGroup{Tag: group.Tag, Type: group.Type, Selected: group.Selected, Items: groupItems})
+	}
+	response, err := json.Marshal(groups)
+	if err != nil {
+		bridge.SendStringToPort(cch.port, fmt.Sprintf("error: %e", err))
+	} else {
+		bridge.SendStringToPort(cch.port, string(response))
+	}
+}
 
 func (cch *CommandClientHandler) InitializeClashMode(modeList libbox.StringIterator, currentMode string) {
 }
 
 func (cch *CommandClientHandler) UpdateClashMode(newMode string) {}
+
+type OutboundGroup struct {
+	Tag      string               `json:"tag"`
+	Type     string               `json:"type"`
+	Selected string               `json:"selected"`
+	Items    []*OutboundGroupItem `json:"items"`
+}
+
+type OutboundGroupItem struct {
+	Tag          string `json:"tag"`
+	Type         string `json:"type"`
+	URLTestTime  int64  `json:"url-test-time"`
+	URLTestDelay int32  `json:"url-test-delay"`
+}
diff --git a/custom/commands.go b/custom/commands.go
index 0f30ac5..c79c66d 100644
--- a/custom/commands.go
+++ b/custom/commands.go
@@ -4,6 +4,7 @@ import "github.com/sagernet/sing-box/experimental/libbox"
 
 var (
 	statusCommand *libbox.CommandClient
+	groupCommand  *libbox.CommandClient
 )
 
 func StartCommand(command int32, port int64) error {
@@ -17,6 +18,15 @@ func StartCommand(command int32, port int64) error {
 			},
 		)
 		return statusCommand.Connect()
+	case libbox.CommandGroup:
+		groupCommand = libbox.NewCommandClient(
+			&CommandClientHandler{port: port},
+			&libbox.CommandClientOptions{
+				Command:        libbox.CommandGroup,
+				StatusInterval: 1000000000,
+			},
+		)
+		return groupCommand.Connect()
 	}
 	return nil
 }
@@ -27,6 +37,10 @@ func StopCommand(command int32) error {
 		err := statusCommand.Disconnect()
 		statusCommand = nil
 		return err
+	case libbox.CommandGroup:
+		err := groupCommand.Disconnect()
+		groupCommand = nil
+		return err
 	}
 	return nil
 }
diff --git a/custom/custom.go b/custom/custom.go
index c65588b..c535a89 100644
--- a/custom/custom.go
+++ b/custom/custom.go
@@ -131,4 +131,22 @@ func stopCommandClient(command C.int) *C.char {
 	return C.CString("")
 }
 
+//export selectOutbound
+func selectOutbound(groupTag *C.char, outboundTag *C.char) *C.char {
+	err := libbox.NewStandaloneCommandClient().SelectOutbound(C.GoString(groupTag), C.GoString(outboundTag))
+	if err != nil {
+		return C.CString(err.Error())
+	}
+	return C.CString("")
+}
+
+//export urlTest
+func urlTest(groupTag *C.char) *C.char {
+	err := libbox.NewStandaloneCommandClient().URLTest(C.GoString(groupTag))
+	if err != nil {
+		return C.CString(err.Error())
+	}
+	return C.CString("")
+}
+
 func main() {}
diff --git a/mobile/mobile.go b/mobile/mobile.go
index 63b18a7..216ca6d 100644
--- a/mobile/mobile.go
+++ b/mobile/mobile.go
@@ -1,34 +1,3 @@
-// package mobile
-
-// import (
-// 	"encoding/json"
-// 	"os"
-
-// 	"github.com/hiddify/libcore/shared"
-// 	_ "github.com/sagernet/gomobile/event/key"
-// 	"github.com/sagernet/sing-box/option"
-// )
-
-// func Parse(path string) error {
-// 	return shared.ParseConfig(path)
-// }
-
-// func ApplyOverrides(path string) (string, error) {
-// 	fileContent, err := os.ReadFile(path)
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	var options option.Options
-// 	err = options.UnmarshalJSON(fileContent)
-// 	if err != nil {
-// 		return "", err
-// 	}
-// 	overrides := shared.ConfigOverrides{ExcludeTunInbound: false, IncludeMixedInbound: false, IncludeLogOutput: false, LogLevel: "", IncludeLogTimestamp: false, ClashApiPort: 9090}
-// 	options = shared.ApplyOverrides(options, overrides)
-// 	config, err := json.Marshal(options)
-// 	return string(config), err
-// }
-
 package mobile
 
 import (