diff --git a/app.go b/app.go
index a886e51..51e9c95 100644
--- a/app.go
+++ b/app.go
@@ -6,6 +6,7 @@ import (
 	"os/signal"
 	"reflect"
 	"runtime"
+	"strconv"
 	"sync/atomic"
 	"syscall"
 	"time"
@@ -35,12 +36,19 @@ func (s *Service) Name() string {
 }
 
 func (s *Service) Debug() bool {
+	if s.opts != nil {
+		return s.opts.debug
+	}
 	return false
 }
 
 func (s *Service) Version() string {
-	return s.opts.version
+	if s.opts != nil {
+		return s.opts.version
+	}
+	return ""
 }
+
 func (s *Service) Metadata() map[string]string {
 	if s.service == nil {
 		return nil
@@ -255,6 +263,7 @@ func New(cbs ...Option) *Service {
 			registrarTimeout: time.Second * 30,
 		},
 	}
+	s.opts.debug, _ = strconv.ParseBool("AEUS_DEBUG")
 	s.opts.metadata = make(map[string]string)
 	for _, cb := range cbs {
 		cb(s.opts)
diff --git a/middleware/auth/jwt.go b/middleware/auth/jwt.go
index b0137c7..fddf9b2 100644
--- a/middleware/auth/jwt.go
+++ b/middleware/auth/jwt.go
@@ -108,9 +108,7 @@ func JWT(keyFunc jwt.Keyfunc, cbs ...Option) middleware.Middleware {
 					return err
 				}
 			}
-			if strings.HasPrefix(token, bearerWord) {
-				token = strings.TrimPrefix(token, bearerWord)
-			}
+			token, _ = strings.CutPrefix(token, bearerWord)
 			var (
 				ti *jwt.Token
 			)
diff --git a/options.go b/options.go
index 10e437f..bbd1103 100644
--- a/options.go
+++ b/options.go
@@ -2,6 +2,7 @@ package aeus
 
 import (
 	"context"
+	"maps"
 	"time"
 
 	"git.nobla.cn/golang/aeus/pkg/logger"
@@ -18,6 +19,7 @@ type options struct {
 	servers          []Server
 	endpoints        []string
 	scope            Scope
+	debug            bool
 	registrarTimeout time.Duration
 	registry         registry.Registry
 	serviceLoader    ServiceLoader
@@ -41,9 +43,7 @@ func WithMetadata(metadata map[string]string) Option {
 		if o.metadata == nil {
 			o.metadata = make(map[string]string)
 		}
-		for k, v := range metadata {
-			o.metadata[k] = v
-		}
+		maps.Copy(o.metadata, metadata)
 	}
 }
 
@@ -71,6 +71,12 @@ func WithScope(scope Scope) Option {
 	}
 }
 
+func WithDebug(debug bool) Option {
+	return func(o *options) {
+		o.debug = debug
+	}
+}
+
 func WithServiceLoader(loader ServiceLoader) Option {
 	return func(o *options) {
 		o.serviceLoader = loader
diff --git a/pkg/logger/default.go b/pkg/logger/slog.go
similarity index 100%
rename from pkg/logger/default.go
rename to pkg/logger/slog.go
diff --git a/transport/http/context.go b/transport/http/context.go
index 1617b68..3c1d76f 100644
--- a/transport/http/context.go
+++ b/transport/http/context.go
@@ -22,6 +22,10 @@ func (c *Context) Context() context.Context {
 	return c.ctx.Request.Context()
 }
 
+func (c *Context) Gin() *gin.Context {
+	return c.ctx
+}
+
 func (c *Context) Request() *http.Request {
 	return c.ctx.Request
 }