diff --git a/libjf-devutil/src/client/java/io/gitlab/jfronny/libjf/devutil/ClientDev.java b/libjf-devutil/src/client/java/io/gitlab/jfronny/libjf/devutil/ClientDev.java
new file mode 100644
index 0000000..f1ef979
--- /dev/null
+++ b/libjf-devutil/src/client/java/io/gitlab/jfronny/libjf/devutil/ClientDev.java
@@ -0,0 +1,12 @@
+package io.gitlab.jfronny.libjf.devutil;
+
+import net.minecraft.client.MinecraftClient;
+
+public class ClientDev {
+    public static String onDebug() {
+        MinecraftClient mc = MinecraftClient.getInstance();
+        if (mc == null) return "MinecraftClient is null";
+        mc.mouse.unlockCursor();
+        return "Mouse unlocked";
+    }
+}