diff --git a/app.go b/app.go
index 7500ea2..a886e51 100644
--- a/app.go
+++ b/app.go
@@ -123,12 +123,16 @@ func (s *Service) preStart(ctx context.Context) (err error) {
 	}
 	if s.opts.scope != nil {
 		s.injectVars(s.opts.scope)
-		s.opts.scope.Init(ctx)
+		if err = s.opts.scope.Init(ctx); err != nil {
+			return
+		}
 		s.refValues = append(s.refValues, reflect.ValueOf(s.opts.scope))
 	}
 	if s.opts.serviceLoader != nil {
 		s.injectVars(s.opts.serviceLoader)
-		s.opts.serviceLoader.Init(ctx)
+		if err = s.opts.serviceLoader.Init(ctx); err != nil {
+			return
+		}
 		s.refValues = append(s.refValues, reflect.ValueOf(s.opts.serviceLoader))
 	}
 	for _, srv := range s.opts.servers {
@@ -137,9 +141,9 @@ func (s *Service) preStart(ctx context.Context) (err error) {
 			return svr.Start(ctx)
 		})
 	}
-	if s.opts.scope != nil {
+	if s.opts.serviceLoader != nil {
 		s.errGroup.Go(func() error {
-			return s.opts.scope.Run(ctx)
+			return s.opts.serviceLoader.Run(ctx)
 		})
 	}
 	if s.opts.registry != nil {
diff --git a/middleware/auth/jwt.go b/middleware/auth/jwt.go
new file mode 100644
index 0000000..8832b06
--- /dev/null
+++ b/middleware/auth/jwt.go
@@ -0,0 +1 @@
+package auth
diff --git a/middleware/transporter.go b/middleware/transporter.go
deleted file mode 100644
index 24f2ba1..0000000
--- a/middleware/transporter.go
+++ /dev/null
@@ -1,5 +0,0 @@
-package middleware
-
-type Transporter interface {
-	
-}
diff --git a/pkg/protoc/command/command.pb.go b/pkg/proto/command/command.pb.go
similarity index 97%
rename from pkg/protoc/command/command.pb.go
rename to pkg/proto/command/command.pb.go
index a3c9404..07cd69b 100644
--- a/pkg/protoc/command/command.pb.go
+++ b/pkg/proto/command/command.pb.go
@@ -102,7 +102,7 @@ const file_command_proto_rawDesc = "" +
 	"\x0eCommandOptions\x12\x12\n" +
 	"\x04path\x18\x01 \x01(\tR\x04path\x12 \n" +
 	"\vdescription\x18\x02 \x01(\tR\vdescription:S\n" +
-	"\acommand\x12\x1e.google.protobuf.MethodOptions\x18ц\x03 \x01(\v2\x14.aeus.CommandOptionsR\acommand\x88\x01\x01B-Z+git.nobla.cn/golang/aeus/pkg/protoc/commandb\x06proto3"
+	"\acommand\x12\x1e.google.protobuf.MethodOptions\x18ц\x03 \x01(\v2\x14.aeus.CommandOptionsR\acommand\x88\x01\x01B,Z*git.nobla.cn/golang/aeus/pkg/proto/commandb\x06proto3"
 
 var (
 	file_command_proto_rawDescOnce sync.Once
diff --git a/pkg/protoc/command/command.proto b/pkg/proto/command/command.proto
similarity index 86%
rename from pkg/protoc/command/command.proto
rename to pkg/proto/command/command.proto
index 6d536b6..dc507e8 100644
--- a/pkg/protoc/command/command.proto
+++ b/pkg/proto/command/command.proto
@@ -4,7 +4,7 @@ package aeus;
 
 import "google/protobuf/descriptor.proto";
 
-option go_package = "git.nobla.cn/golang/aeus/pkg/protoc/command";
+option go_package = "git.nobla.cn/golang/aeus/pkg/proto/command";
 
 
 message CommandOptions {
diff --git a/pkg/proto/rest/rest.pb.go b/pkg/proto/rest/rest.pb.go
new file mode 100644
index 0000000..40bd1fd
--- /dev/null
+++ b/pkg/proto/rest/rest.pb.go
@@ -0,0 +1,269 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.6
+// 	protoc        v5.29.3
+// source: rest.proto
+
+package rest
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	descriptorpb "google.golang.org/protobuf/types/descriptorpb"
+	reflect "reflect"
+	sync "sync"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type RestFieldOptions struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Gorm          string                 `protobuf:"bytes,1,opt,name=gorm,proto3" json:"gorm,omitempty"`
+	Comment       string                 `protobuf:"bytes,2,opt,name=comment,proto3" json:"comment,omitempty"`
+	Scenarios     string                 `protobuf:"bytes,3,opt,name=scenarios,proto3" json:"scenarios,omitempty"`
+	Position      string                 `protobuf:"bytes,4,opt,name=position,proto3" json:"position,omitempty"`
+	Format        string                 `protobuf:"bytes,5,opt,name=format,proto3" json:"format,omitempty"`
+	Props         string                 `protobuf:"bytes,6,opt,name=props,proto3" json:"props,omitempty"`
+	Rule          string                 `protobuf:"bytes,7,opt,name=rule,proto3" json:"rule,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *RestFieldOptions) Reset() {
+	*x = RestFieldOptions{}
+	mi := &file_rest_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *RestFieldOptions) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RestFieldOptions) ProtoMessage() {}
+
+func (x *RestFieldOptions) ProtoReflect() protoreflect.Message {
+	mi := &file_rest_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RestFieldOptions.ProtoReflect.Descriptor instead.
+func (*RestFieldOptions) Descriptor() ([]byte, []int) {
+	return file_rest_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *RestFieldOptions) GetGorm() string {
+	if x != nil {
+		return x.Gorm
+	}
+	return ""
+}
+
+func (x *RestFieldOptions) GetComment() string {
+	if x != nil {
+		return x.Comment
+	}
+	return ""
+}
+
+func (x *RestFieldOptions) GetScenarios() string {
+	if x != nil {
+		return x.Scenarios
+	}
+	return ""
+}
+
+func (x *RestFieldOptions) GetPosition() string {
+	if x != nil {
+		return x.Position
+	}
+	return ""
+}
+
+func (x *RestFieldOptions) GetFormat() string {
+	if x != nil {
+		return x.Format
+	}
+	return ""
+}
+
+func (x *RestFieldOptions) GetProps() string {
+	if x != nil {
+		return x.Props
+	}
+	return ""
+}
+
+func (x *RestFieldOptions) GetRule() string {
+	if x != nil {
+		return x.Rule
+	}
+	return ""
+}
+
+type RestMessageOptions struct {
+	state         protoimpl.MessageState `protogen:"open.v1"`
+	Table         string                 `protobuf:"bytes,1,opt,name=table,proto3" json:"table,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *RestMessageOptions) Reset() {
+	*x = RestMessageOptions{}
+	mi := &file_rest_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *RestMessageOptions) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RestMessageOptions) ProtoMessage() {}
+
+func (x *RestMessageOptions) ProtoReflect() protoreflect.Message {
+	mi := &file_rest_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RestMessageOptions.ProtoReflect.Descriptor instead.
+func (*RestMessageOptions) Descriptor() ([]byte, []int) {
+	return file_rest_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *RestMessageOptions) GetTable() string {
+	if x != nil {
+		return x.Table
+	}
+	return ""
+}
+
+var file_rest_proto_extTypes = []protoimpl.ExtensionInfo{
+	{
+		ExtendedType:  (*descriptorpb.FieldOptions)(nil),
+		ExtensionType: (*RestFieldOptions)(nil),
+		Field:         52118,
+		Name:          "aeus.field",
+		Tag:           "bytes,52118,opt,name=field",
+		Filename:      "rest.proto",
+	},
+	{
+		ExtendedType:  (*descriptorpb.MessageOptions)(nil),
+		ExtensionType: (*RestMessageOptions)(nil),
+		Field:         52119,
+		Name:          "aeus.opts",
+		Tag:           "bytes,52119,opt,name=opts",
+		Filename:      "rest.proto",
+	},
+}
+
+// Extension fields to descriptorpb.FieldOptions.
+var (
+	// ormable will cause orm code to be generated for this field
+	//
+	// optional aeus.RestFieldOptions field = 52118;
+	E_Field = &file_rest_proto_extTypes[0]
+)
+
+// Extension fields to descriptorpb.MessageOptions.
+var (
+	// ormable will cause orm code to be generated for this message/object
+	//
+	// optional aeus.RestMessageOptions opts = 52119;
+	E_Opts = &file_rest_proto_extTypes[1]
+)
+
+var File_rest_proto protoreflect.FileDescriptor
+
+const file_rest_proto_rawDesc = "" +
+	"\n" +
+	"\n" +
+	"rest.proto\x12\x04aeus\x1a google/protobuf/descriptor.proto\"\xbc\x01\n" +
+	"\x10RestFieldOptions\x12\x12\n" +
+	"\x04gorm\x18\x01 \x01(\tR\x04gorm\x12\x18\n" +
+	"\acomment\x18\x02 \x01(\tR\acomment\x12\x1c\n" +
+	"\tscenarios\x18\x03 \x01(\tR\tscenarios\x12\x1a\n" +
+	"\bposition\x18\x04 \x01(\tR\bposition\x12\x16\n" +
+	"\x06format\x18\x05 \x01(\tR\x06format\x12\x14\n" +
+	"\x05props\x18\x06 \x01(\tR\x05props\x12\x12\n" +
+	"\x04rule\x18\a \x01(\tR\x04rule\"*\n" +
+	"\x12RestMessageOptions\x12\x14\n" +
+	"\x05table\x18\x01 \x01(\tR\x05table:M\n" +
+	"\x05field\x12\x1d.google.protobuf.FieldOptions\x18\x96\x97\x03 \x01(\v2\x16.aeus.RestFieldOptionsR\x05field:O\n" +
+	"\x04opts\x12\x1f.google.protobuf.MessageOptions\x18\x97\x97\x03 \x01(\v2\x18.aeus.RestMessageOptionsR\x04optsB)Z'git.nobla.cn/golang/aeus/pkg/proto/restb\x06proto3"
+
+var (
+	file_rest_proto_rawDescOnce sync.Once
+	file_rest_proto_rawDescData []byte
+)
+
+func file_rest_proto_rawDescGZIP() []byte {
+	file_rest_proto_rawDescOnce.Do(func() {
+		file_rest_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_rest_proto_rawDesc), len(file_rest_proto_rawDesc)))
+	})
+	return file_rest_proto_rawDescData
+}
+
+var file_rest_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_rest_proto_goTypes = []any{
+	(*RestFieldOptions)(nil),            // 0: aeus.RestFieldOptions
+	(*RestMessageOptions)(nil),          // 1: aeus.RestMessageOptions
+	(*descriptorpb.FieldOptions)(nil),   // 2: google.protobuf.FieldOptions
+	(*descriptorpb.MessageOptions)(nil), // 3: google.protobuf.MessageOptions
+}
+var file_rest_proto_depIdxs = []int32{
+	2, // 0: aeus.field:extendee -> google.protobuf.FieldOptions
+	3, // 1: aeus.opts:extendee -> google.protobuf.MessageOptions
+	0, // 2: aeus.field:type_name -> aeus.RestFieldOptions
+	1, // 3: aeus.opts:type_name -> aeus.RestMessageOptions
+	4, // [4:4] is the sub-list for method output_type
+	4, // [4:4] is the sub-list for method input_type
+	2, // [2:4] is the sub-list for extension type_name
+	0, // [0:2] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_rest_proto_init() }
+func file_rest_proto_init() {
+	if File_rest_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_rest_proto_rawDesc), len(file_rest_proto_rawDesc)),
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 2,
+			NumServices:   0,
+		},
+		GoTypes:           file_rest_proto_goTypes,
+		DependencyIndexes: file_rest_proto_depIdxs,
+		MessageInfos:      file_rest_proto_msgTypes,
+		ExtensionInfos:    file_rest_proto_extTypes,
+	}.Build()
+	File_rest_proto = out.File
+	file_rest_proto_goTypes = nil
+	file_rest_proto_depIdxs = nil
+}
diff --git a/pkg/proto/rest/rest.proto b/pkg/proto/rest/rest.proto
new file mode 100644
index 0000000..d428fd6
--- /dev/null
+++ b/pkg/proto/rest/rest.proto
@@ -0,0 +1,33 @@
+syntax = "proto3";
+
+package aeus;
+
+import "google/protobuf/descriptor.proto";
+
+option go_package = "git.nobla.cn/golang/aeus/pkg/proto/rest";
+
+
+extend google.protobuf.FieldOptions {
+    // ormable will cause orm code to be generated for this field
+    RestFieldOptions field = 52118;
+}
+
+
+message RestFieldOptions {
+    string gorm = 1;
+    string comment = 2;
+    string scenarios= 3;
+    string position= 4;
+    string format = 5;
+    string props = 6;
+    string rule= 7;
+}
+
+extend google.protobuf.MessageOptions {
+    // ormable will cause orm code to be generated for this message/object
+    RestMessageOptions opts = 52119;
+}
+
+message RestMessageOptions {
+    string table = 1;
+}
diff --git a/transport/grpc/server.go b/transport/grpc/server.go
index b1f12f5..7ffbba9 100644
--- a/transport/grpc/server.go
+++ b/transport/grpc/server.go
@@ -57,6 +57,8 @@ func (s *Server) unaryServerInterceptor() grpc.UnaryServerInterceptor {
 		ctx = metadata.MergeContext(ctx, md, true)
 		ctx = context.WithValue(ctx, requestValueContextKey{}, req)
 		err = h(ctx)
+		// grpcmd.AppendToOutgoingContext(ctx, grpcmd.New(metadata.FromContext(ctx)))
+		// grpc.SetHeader()
 		return
 	}
 }
diff --git a/types.go b/types.go
index 896ea2a..621fa17 100644
--- a/types.go
+++ b/types.go
@@ -17,13 +17,13 @@ type (
 
 	// application scope interface.
 	Scope interface {
-		Init(ctx context.Context)
-		Run(ctx context.Context) (err error)
+		Init(ctx context.Context) (err error)
 	}
 
 	// service loader interface.
 	ServiceLoader interface {
-		Init(ctx context.Context)
+		Init(ctx context.Context) (err error)
+		Run(ctx context.Context) (err error)
 	}
 
 	// endpoint interface.