diff --git a/AGENTS.md b/AGENTS.md
index 397c77b..3d75bb1 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,3 +1,9 @@
+<!-- BEGIN:nextjs-agent-rules -->
+# This is NOT the Next.js you know
+
+This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` before writing any code. Heed deprecation notices.
+<!-- END:nextjs-agent-rules -->
+
 # Repository Guidelines
 
 This is the primary working guide for AI coding agents and contributors. It summarizes the repo-specific rules and adds contributor workflow guidance. Prefer it over generic Next.js assumptions.