diff --git a/internal/admin/handler.go b/internal/admin/handler.go
index eb5b4d5055..4a4e36bfb6 100644
--- a/internal/admin/handler.go
+++ b/internal/admin/handler.go
@@ -642,7 +642,7 @@ func (h *Handler) GetUserPermission(c *gin.Context) {
 
 // GetServices handle get all services
 func (h *Handler) GetServices(c *gin.Context) {
-	services, err := h.service.GetAllServices()
+	services, err := h.service.ListServices()
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{
 			"code":    common.CodeServerError,
@@ -908,7 +908,10 @@ func (h *Handler) TestSandboxConnection(c *gin.Context) {
 
 	result, err := h.service.TestSandboxConnection(req.ProviderType, req.Config)
 	if err != nil {
-		errorResponse(c, err.Error(), 400)
+		c.JSON(http.StatusBadRequest, gin.H{
+			"code":    common.CodeBadRequest,
+			"message": "Invalid access token",
+		})
 		return
 	}
 
@@ -962,7 +965,10 @@ func (h *Handler) HandleNoRoute(c *gin.Context) {
 func (h *Handler) Reports(c *gin.Context) {
 	var req common.BaseMessage
 	if err := c.ShouldBindJSON(&req); err != nil {
-		errorResponse(c, "Invalid request body: "+err.Error(), 400)
+		c.JSON(http.StatusBadRequest, gin.H{
+			"code":    common.CodeBadRequest,
+			"message": "Invalid request body: " + err.Error(),
+		})
 		return
 	}
 
@@ -973,7 +979,10 @@ func (h *Handler) Reports(c *gin.Context) {
 
 	// Only process heartbeat messages for now
 	if req.MessageType != common.MessageHeartbeat {
-		errorResponse(c, "Unsupported report type: "+string(req.MessageType), 400)
+		c.JSON(http.StatusBadRequest, gin.H{
+			"code":    common.CodeBadRequest,
+			"message": "Unsupported report type: " + string(req.MessageType),
+		})
 		return
 	}
 
diff --git a/internal/admin/service.go b/internal/admin/service.go
index 7a236769b9..6e2e1b346c 100644
--- a/internal/admin/service.go
+++ b/internal/admin/service.go
@@ -277,8 +277,8 @@ func (s *Service) GetUserPermission(username string) ([]map[string]interface{},
 	return []map[string]interface{}{}, nil
 }
 
-// GetAllServices get all services
-func (s *Service) GetAllServices() ([]map[string]interface{}, error) {
+// ListServices get all services
+func (s *Service) ListServices() ([]map[string]interface{}, error) {
 	allConfigs := server.GetAllConfigs()
 
 	var result []map[string]interface{}
diff --git a/internal/common/status_message.go b/internal/common/status_message.go
index 76d29ac3eb..d538848a9e 100644
--- a/internal/common/status_message.go
+++ b/internal/common/status_message.go
@@ -21,13 +21,13 @@ const (
 )
 
 type BaseMessage struct {
-	MessageID   int64                  `json:"report_id"`
-	MessageType MessageType            `json:"report_type"`
-	ServerName  string                 `json:"server_id"`
-	ServerType  ServerType             `json:"server_type"`
-	Host        string                 `json:"host"`
-	Port        int                    `json:"port"`
-	Version     string                 `json:"version"`
-	Timestamp   time.Time              `json:"timestamp"`
-	Ext         map[string]interface{} `json:"ext,omitempty"`
+	MessageID   int64       `json:"report_id"`
+	MessageType MessageType `json:"report_type"`
+	ServerName  string      `json:"server_id"`
+	ServerType  ServerType  `json:"server_type"`
+	Host        string      `json:"host"`
+	Port        int         `json:"port"`
+	Version     string      `json:"version"`
+	Timestamp   time.Time   `json:"timestamp"`
+	Ext         interface{} `json:"ext,omitempty"`
 }
diff --git a/internal/service/heartbeat_sender.go b/internal/service/heartbeat_sender.go
index ec2b198320..8a80c47137 100644
--- a/internal/service/heartbeat_sender.go
+++ b/internal/service/heartbeat_sender.go
@@ -103,7 +103,7 @@ func (h *HeartbeatSender) SendHeartbeat() error {
 		Port:        h.port,
 		Version:     h.version,
 		Timestamp:   time.Now(),
-		Ext:         make(map[string]interface{}),
+		Ext:         nil,
 	}
 
 	jsonData, err := json.Marshal(message)