diff --git a/cmd_root.go b/cmd_root.go
index ac502fd..bee5f27 100644
--- a/cmd_root.go
+++ b/cmd_root.go
@@ -78,6 +78,10 @@ func Command(opt ...Option) Option {
 	}
 }
 
+func Arguments(f func(cmd *cobra.Command)) Option {
+	return f
+}
+
 func Version(ver string) Option {
 	return func(cmd *cobra.Command) {
 		cmd.Version = ver
diff --git a/container/container.go b/container/container.go
index 1d31a5c..93f0071 100644
--- a/container/container.go
+++ b/container/container.go
@@ -52,7 +52,14 @@ type ProviderContainer struct {
 
 type Providers []ProviderContainer
 
-func (p Providers) With(pcs ...Providers) Providers {
+func (p Providers) With(pcs ...func(...opt.Option) error) Providers {
+	for _, pc := range pcs {
+		p = append(p, ProviderContainer{Provider: pc})
+	}
+	return p
+}
+
+func (p Providers) WithProviders(pcs ...Providers) Providers {
 	for _, pc := range pcs {
 		p = append(p, pc...)
 	}
diff --git a/contracts/http.go b/contracts/http.go
index 585b66d..8d13405 100644
--- a/contracts/http.go
+++ b/contracts/http.go
@@ -1,8 +1,5 @@
 package contracts
 
-type HttpRoute interface{}
-
-type HttpService interface {
-	Serve() error
-	GetEngine() interface{}
+type HttpRoute interface {
+	Register() error
 }