diff --git a/x-pack/plugins/siem/server/mocks.ts b/x-pack/plugins/siem/server/mocks.ts
new file mode 100644
index 0000000000000..44c41be86b6ff
--- /dev/null
+++ b/x-pack/plugins/siem/server/mocks.ts
@@ -0,0 +1,17 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { SiemClient } from './types';
+
+type SiemClientMock = jest.Mocked<SiemClient>;
+const createSiemClientMock = (): SiemClientMock =>
+  (({
+    getSignalsIndex: jest.fn(),
+  } as unknown) as SiemClientMock);
+
+export const siemMock = {
+  createClient: createSiemClientMock,
+};