diff --git a/executor-tester.lua b/executor-tester.lua
new file mode 100644
index 0000000..0e5f939
--- /dev/null
+++ b/executor-tester.lua
@@ -0,0 +1,29 @@
+local exec_name = identifyexecutor() or getexecutorname() or "Executor"
+
+local UNC = {
+    "setfflag",
+    "mousemoverel",
+    "getrenv",
+    "hookmetamethod",
+    "newcclosure",
+    "getnamecallmethod",
+    "gethui",
+    "loadstring",
+}
+
+local missing = {}
+for _, name in ipairs(UNC) do
+    if type(_G[name]) ~= "function" then
+        missing[#missing + 1] = name
+    end
+end
+
+if type(debug.getupvalue) ~= "function" then
+    missing[#missing + 1] = "debug.getupvalue"
+end
+
+if #missing > 0 then
+    game:GetService("Players").LocalPlayer:Kick(exec_name .. " is missing: " .. table.concat(missing, ", "))
+else
+    game:GetService("Players").LocalPlayer:Kick(exec_name .. " supports mirrorhack")
+end
\ No newline at end of file