diff --git a/src/browser/pw-tools-core.interactions.batch.test.ts b/src/browser/pw-tools-core.interactions.batch.test.ts
new file mode 100644
index 000000000000..2801ebe81908
--- /dev/null
+++ b/src/browser/pw-tools-core.interactions.batch.test.ts
@@ -0,0 +1,85 @@
+import { beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+
+let page: { evaluate: ReturnType<typeof vi.fn> } | null = null;
+
+const getPageForTargetId = vi.fn(async () => {
+  if (!page) {
+    throw new Error("test: page not set");
+  }
+  return page;
+});
+const ensurePageState = vi.fn(() => {});
+const forceDisconnectPlaywrightForTarget = vi.fn(async () => {});
+const refLocator = vi.fn(() => {
+  throw new Error("test: refLocator should not be called");
+});
+const restoreRoleRefsForTarget = vi.fn(() => {});
+
+const closePageViaPlaywright = vi.fn(async () => {});
+const resizeViewportViaPlaywright = vi.fn(async () => {});
+
+vi.mock("./pw-session.js", () => ({
+  ensurePageState,
+  forceDisconnectPlaywrightForTarget,
+  getPageForTargetId,
+  refLocator,
+  restoreRoleRefsForTarget,
+}));
+
+vi.mock("./pw-tools-core.snapshot.js", () => ({
+  closePageViaPlaywright,
+  resizeViewportViaPlaywright,
+}));
+
+let batchViaPlaywright: typeof import("./pw-tools-core.interactions.js").batchViaPlaywright;
+
+describe("batchViaPlaywright", () => {
+  beforeAll(async () => {
+    ({ batchViaPlaywright } = await import("./pw-tools-core.interactions.js"));
+  });
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    page = {
+      evaluate: vi.fn(async () => "ok"),
+    };
+  });
+
+  it("propagates evaluate timeouts through batched execution", async () => {
+    const result = await batchViaPlaywright({
+      cdpUrl: "http://127.0.0.1:9222",
+      targetId: "tab-1",
+      evaluateEnabled: true,
+      actions: [{ kind: "evaluate", fn: "() => 1", timeoutMs: 5000 }],
+    });
+
+    expect(result).toEqual({ results: [{ ok: true }] });
+    expect(page?.evaluate).toHaveBeenCalledWith(
+      expect.any(Function),
+      expect.objectContaining({
+        fnBody: "() => 1",
+        timeoutMs: 4500,
+      }),
+    );
+  });
+
+  it("supports resize and close inside a batch", async () => {
+    const result = await batchViaPlaywright({
+      cdpUrl: "http://127.0.0.1:9222",
+      targetId: "tab-1",
+      actions: [{ kind: "resize", width: 800, height: 600 }, { kind: "close" }],
+    });
+
+    expect(result).toEqual({ results: [{ ok: true }, { ok: true }] });
+    expect(resizeViewportViaPlaywright).toHaveBeenCalledWith({
+      cdpUrl: "http://127.0.0.1:9222",
+      targetId: "tab-1",
+      width: 800,
+      height: 600,
+    });
+    expect(closePageViaPlaywright).toHaveBeenCalledWith({
+      cdpUrl: "http://127.0.0.1:9222",
+      targetId: "tab-1",
+    });
+  });
+});