diff --git a/e2e/tests/notify-developer-e2ee.spec.ts b/e2e/tests/notify-developer-e2ee.spec.ts
new file mode 100644
index 0000000..a7a98b6
--- /dev/null
+++ b/e2e/tests/notify-developer-e2ee.spec.ts
@@ -0,0 +1,38 @@
+import { test, expect } from "@playwright/test";
+import * as fs from "fs";
+import * as path from "path";
+
+const REPO_ROOT = path.resolve(__dirname, "../..");
+const NOTIFY_SCRIPT = path.join(
+  REPO_ROOT,
+  "dev-scripts/agent/notify-developer.sh"
+);
+
+test.describe("notify-developer.sh — E2EE en DM rooms", () => {
+  test("script existe y es ejecutable", () => {
+    expect(fs.existsSync(NOTIFY_SCRIPT)).toBe(true);
+    const stats = fs.statSync(NOTIFY_SCRIPT);
+    // Check executable bit (owner)
+    expect(stats.mode & 0o100).toBeTruthy();
+  });
+
+  test("createRoom incluye initial_state con m.room.encryption", () => {
+    const content = fs.readFileSync(NOTIFY_SCRIPT, "utf-8");
+
+    // Must have initial_state in the createRoom call
+    expect(content).toContain("initial_state");
+    expect(content).toContain("m.room.encryption");
+    expect(content).toContain("m.megolm.v1.aes-sha2");
+  });
+
+  test("createRoom mantiene preset trusted_private_chat", () => {
+    const content = fs.readFileSync(NOTIFY_SCRIPT, "utf-8");
+    expect(content).toContain("trusted_private_chat");
+  });
+
+  test("createRoom incluye is_direct e invite", () => {
+    const content = fs.readFileSync(NOTIFY_SCRIPT, "utf-8");
+    expect(content).toContain("is_direct");
+    expect(content).toContain("invite");
+  });
+});