diff --git a/src/agents/tools/cron-tool.e2e.test.ts b/src/agents/tools/cron-tool.e2e.test.ts
index 7b6d1310e4a..b850f74ad36 100644
--- a/src/agents/tools/cron-tool.e2e.test.ts
+++ b/src/agents/tools/cron-tool.e2e.test.ts
@@ -1,15 +1,6 @@
-import { beforeEach, describe, expect, it, vi } from "vitest";
-
-const callGatewayMock = vi.fn();
-vi.mock("../../gateway/call.js", () => ({
-  callGateway: (opts: unknown) => callGatewayMock(opts),
-}));
-
-vi.mock("../agent-scope.js", () => ({
-  resolveSessionAgentId: () => "agent-123",
-}));
-
+import { beforeEach, describe, expect, it } from "vitest";
 import { createCronTool } from "./cron-tool.js";
+import { callGatewayMock, resetCronToolGatewayMock } from "./cron-tool.test-helpers.js";
 
 describe("cron tool", () => {
   async function executeAddAndReadDelivery(params: {
@@ -35,8 +26,7 @@ describe("cron tool", () => {
   }
 
   beforeEach(() => {
-    callGatewayMock.mockReset();
-    callGatewayMock.mockResolvedValue({ ok: true });
+    resetCronToolGatewayMock();
   });
 
   it.each([
diff --git a/src/agents/tools/cron-tool.flat-params.test.ts b/src/agents/tools/cron-tool.flat-params.test.ts
index 2a96b451073..cac2ac75647 100644
--- a/src/agents/tools/cron-tool.flat-params.test.ts
+++ b/src/agents/tools/cron-tool.flat-params.test.ts
@@ -1,20 +1,10 @@
-import { beforeEach, describe, expect, it, vi } from "vitest";
-
-const callGatewayMock = vi.fn();
-vi.mock("../../gateway/call.js", () => ({
-  callGateway: (opts: unknown) => callGatewayMock(opts),
-}));
-
-vi.mock("../agent-scope.js", () => ({
-  resolveSessionAgentId: () => "agent-123",
-}));
-
+import { beforeEach, describe, expect, it } from "vitest";
 import { createCronTool } from "./cron-tool.js";
+import { callGatewayMock, resetCronToolGatewayMock } from "./cron-tool.test-helpers.js";
 
 describe("cron tool flat-params", () => {
   beforeEach(() => {
-    callGatewayMock.mockReset();
-    callGatewayMock.mockResolvedValue({ ok: true });
+    resetCronToolGatewayMock();
   });
 
   it("preserves explicit top-level sessionKey during flat-params recovery", async () => {
diff --git a/src/agents/tools/cron-tool.test-helpers.ts b/src/agents/tools/cron-tool.test-helpers.ts
new file mode 100644
index 00000000000..9125c8a86dc
--- /dev/null
+++ b/src/agents/tools/cron-tool.test-helpers.ts
@@ -0,0 +1,16 @@
+import { vi } from "vitest";
+
+export const callGatewayMock = vi.fn();
+
+vi.mock("../../gateway/call.js", () => ({
+  callGateway: (opts: unknown) => callGatewayMock(opts),
+}));
+
+vi.mock("../agent-scope.js", () => ({
+  resolveSessionAgentId: () => "agent-123",
+}));
+
+export function resetCronToolGatewayMock() {
+  callGatewayMock.mockReset();
+  callGatewayMock.mockResolvedValue({ ok: true });
+}