diff --git a/test/Sanity.t.sol b/test/Sanity.t.sol
new file mode 100644
index 0000000..e14b369
--- /dev/null
+++ b/test/Sanity.t.sol
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+import {Test} from "forge-std/Test.sol";
+
+/// @dev Simple sanity test — verifies the test harness is functional.
+contract SanityTest is Test {
+    function test_true_is_true() public pure {
+        assertTrue(true);
+    }
+
+    function test_one_plus_one() public pure {
+        assertEq(1 + 1, 2);
+    }
+}