diff --git a/AGENTS.md b/AGENTS.md
index 418d1705419..f1bf50e066f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,3 +1,7 @@
+---
+SPDX-License-Identifier: MIT-0
+---
+
 # AGENTS.md
 
 This file provides guidance to AI coding agents when working with code in this repository. Only add