diff --git a/cleanup.go b/cleanup.go
new file mode 100644
index 0000000..39fc3d0
--- /dev/null
+++ b/cleanup.go
@@ -0,0 +1,18 @@
+package crud_module
+
+var restricted_words = []string{
+	"api", "apis", "root", "admin", "v1", "v2",
+}
+
+func isWordRestricted(element string) bool {
+	return Contains(element)
+}
+
+func Contains(name string) bool {
+	for _, value := range restricted_words {
+		if value == name {
+			return true
+		}
+	}
+	return false
+}
diff --git a/crud.go b/crud.go
index 3f06be1..f2feefa 100644
--- a/crud.go
+++ b/crud.go
@@ -4,8 +4,6 @@ import (
 	"fmt"
 )
 
-var Version versionType = "0.0.1"
-
 func Log(vers string) {
 	fmt.Println("[DEBUG] " + vers)
 }
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..5350288
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
+github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
diff --git a/logger.go b/logger.go
new file mode 100644
index 0000000..4dffd30
--- /dev/null
+++ b/logger.go
@@ -0,0 +1,9 @@
+package crud_module
+
+import (
+	"fmt"
+)
+
+func LogVersion() {
+	fmt.Println("@mecuate/crud_module.package.version: " + Version)
+}
diff --git a/version.go b/version.go
new file mode 100644
index 0000000..17a3238
--- /dev/null
+++ b/version.go
@@ -0,0 +1,3 @@
+package crud_module
+
+var Version versionType = "0.0.1"