diff --git a/tests/unit/service-layer.test.ts b/tests/unit/service-layer.test.ts
new file mode 100644
index 0000000..9ca6e5f
--- /dev/null
+++ b/tests/unit/service-layer.test.ts
@@ -0,0 +1,19 @@
+import { describe, expect, it } from "vitest";
+import { panelService } from "@/api/services/panel-service";
+
+describe("panelService", () => {
+  it("returns backend-ready response envelopes", async () => {
+    const response = await panelService.dashboard.summary();
+
+    expect(response.error).toBeNull();
+    expect(response.meta.requestId).toMatch(/^req_/);
+    expect(response.data?.account.username).toBe("coaxys");
+  });
+
+  it("filters website data through service methods", async () => {
+    const response = await panelService.websites.list({ search: "docs" });
+
+    expect(response.data).toHaveLength(1);
+    expect(response.data?.[0].domain).toBe("docs.example.com");
+  });
+});