diff --git a/src/main/java/PasswordManagerInterface.java b/src/main/java/PasswordManagerInterface.java
new file mode 100644
index 0000000..fdfffad
--- /dev/null
+++ b/src/main/java/PasswordManagerInterface.java
@@ -0,0 +1,6 @@
+public interface PasswordManagerInterface {
+    public static void main(String[] args) {
+    };
+    public void listVaults();
+    public void openVault();
+}