diff --git a/README.md b/README.md
index ccb2a61..e0fcbb8 100644
--- a/README.md
+++ b/README.md
@@ -19,3 +19,7 @@ Run locally:
 npm install
 npm run dev
 ```
+
+## Platform health probes
+
+The platform probes `GET /healthz` for startup and liveness, and `GET /` for readiness. Keep `/healthz` static and database-independent so startup and liveness do not depend on database availability.
diff --git a/app/healthz/route.ts b/app/healthz/route.ts
new file mode 100644
index 0000000..1a64c6e
--- /dev/null
+++ b/app/healthz/route.ts
@@ -0,0 +1,4 @@
+export const dynamic = "force-static";
+export function GET() {
+  return new Response("ok", { status: 200, headers: { "Content-Type": "text/plain; charset=utf-8" } });
+}