diff --git a/tests/test_litellm/responses/mcp/test_litellm_proxy_mcp_handler.py b/tests/test_litellm/responses/mcp/test_litellm_proxy_mcp_handler.py
index ae6ff835546..28280cb2879 100644
--- a/tests/test_litellm/responses/mcp/test_litellm_proxy_mcp_handler.py
+++ b/tests/test_litellm/responses/mcp/test_litellm_proxy_mcp_handler.py
@@ -103,7 +103,9 @@ def test_extract_tool_calls_from_chat_response_handles_tool_calls():
         object="chat.completion",
     )
 
-    tool_calls = LiteLLM_Proxy_MCP_Handler._extract_tool_calls_from_chat_response(response)
+    tool_calls = LiteLLM_Proxy_MCP_Handler._extract_tool_calls_from_chat_response(
+        response
+    )
 
     assert len(tool_calls) == 1
     assert tool_calls[0]["function"]["name"] == "foo"
@@ -173,7 +175,9 @@ def test_transform_mcp_tools_to_openai_uses_chat_format(monkeypatch):
         fake_transform_responses,
     )
 
-    chat_tools = LiteLLM_Proxy_MCP_Handler._transform_mcp_tools_to_openai(["tool"], target_format="chat")
+    chat_tools = LiteLLM_Proxy_MCP_Handler._transform_mcp_tools_to_openai(
+        ["tool"], target_format="chat"
+    )
     resp_tools = LiteLLM_Proxy_MCP_Handler._transform_mcp_tools_to_openai(["tool"])
 
     assert chat_tools == [{"chat": True}]
@@ -322,7 +326,9 @@ async def test_execute_tool_calls_strips_prefix_when_alias_differs_from_server_n
     )
     from litellm.proxy._experimental.mcp_server import mcp_server_manager as _msm
 
-    _msm.global_mcp_server_manager._get_mcp_server_from_tool_name = MagicMock(return_value=fake_server)
+    _msm.global_mcp_server_manager._get_mcp_server_from_tool_name = MagicMock(
+        return_value=fake_server
+    )
 
     tool_name = "my_deepwiki-read_wiki_structure"
     tool_calls = [
@@ -394,14 +400,18 @@ async def test_execute_tool_calls_logs_failure_via_post_call_failure_hook(monkey
     """
     post_call_failure_hook = _setup_proxy_logging(monkeypatch)
 
-    fake_manager = types.SimpleNamespace(call_tool=AsyncMock(side_effect=HTTPException(status_code=500, detail="boom")))
+    fake_manager = types.SimpleNamespace(
+        call_tool=AsyncMock(side_effect=HTTPException(status_code=500, detail="boom"))
+    )
     monkeypatch.setattr(
         "litellm.proxy._experimental.mcp_server.mcp_server_manager.global_mcp_server_manager",
         fake_manager,
     )
 
     tool_name = "deepwiki-read_wiki_structure"
-    tool_calls = [{"id": "call-err", "function": {"name": tool_name, "arguments": "{}"}}]
+    tool_calls = [
+        {"id": "call-err", "function": {"name": tool_name, "arguments": "{}"}}
+    ]
 
     user_auth = types.SimpleNamespace(api_key="test_key", user_id="test_user")
 
@@ -419,7 +429,10 @@ async def test_execute_tool_calls_logs_failure_via_post_call_failure_hook(monkey
 
     post_call_failure_hook.assert_awaited_once()
     assert post_call_failure_hook.await_args is not None
-    assert post_call_failure_hook.await_args.kwargs.get("route") == "/responses/mcp/call_tool"
+    assert (
+        post_call_failure_hook.await_args.kwargs.get("route")
+        == "/responses/mcp/call_tool"
+    )
 
 
 @pytest.mark.asyncio
@@ -442,7 +455,9 @@ async def test_execute_tool_calls_passes_litellm_call_id_and_trace_id_to_functio
     # NOTE: Don't patch via dotted string path here because `litellm.responses`
     # is a function attribute on the `litellm` package (shadowing the submodule),
     # which breaks monkeypatch's importpath resolution.
-    handler_module = importlib.import_module("litellm.responses.mcp.litellm_proxy_mcp_handler")
+    handler_module = importlib.import_module(
+        "litellm.responses.mcp.litellm_proxy_mcp_handler"
+    )
     monkeypatch.setattr(handler_module, "function_setup", fake_function_setup)
 
     tool_name = "deepwiki-read_wiki_structure"
@@ -489,7 +504,9 @@ async def test_get_mcp_tools_from_manager_enables_list_tools_logging(monkeypatch
     user_auth = types.SimpleNamespace(api_key="test_key", user_id="test_user")
     tools, _server_names = await LiteLLM_Proxy_MCP_Handler._get_mcp_tools_from_manager(
         user_api_key_auth=user_auth,
-        mcp_tools_with_litellm_proxy=[{"type": "mcp", "server_url": "litellm_proxy/mcp/deepwiki"}],
+        mcp_tools_with_litellm_proxy=[
+            {"type": "mcp", "server_url": "litellm_proxy/mcp/deepwiki"}
+        ],
     )
 
     assert tools == []
@@ -500,7 +517,9 @@ async def test_get_mcp_tools_from_manager_enables_list_tools_logging(monkeypatch
 
 
 def test_get_parent_request_tags_from_metadata():
-    tags = LiteLLM_Proxy_MCP_Handler._get_parent_request_tags({"metadata": {"tags": ["team-a", "prod"]}})
+    tags = LiteLLM_Proxy_MCP_Handler._get_parent_request_tags(
+        {"metadata": {"tags": ["team-a", "prod"]}}
+    )
     assert tags == ["team-a", "prod"]
 
 
@@ -536,7 +555,9 @@ async def test_get_mcp_tools_from_manager_forwards_request_tags(monkeypatch):
 
     await LiteLLM_Proxy_MCP_Handler._get_mcp_tools_from_manager(
         user_api_key_auth=types.SimpleNamespace(api_key="k", user_id="u"),
-        mcp_tools_with_litellm_proxy=[{"type": "mcp", "server_url": "litellm_proxy/mcp/deepwiki"}],
+        mcp_tools_with_litellm_proxy=[
+            {"type": "mcp", "server_url": "litellm_proxy/mcp/deepwiki"}
+        ],
         request_tags=["team-a"],
     )
 
@@ -553,7 +574,9 @@ async def test_execute_tool_calls_propagates_request_tags_to_function_setup(monk
         captured.update(kwargs)
         return None, None
 
-    handler_module = importlib.import_module("litellm.responses.mcp.litellm_proxy_mcp_handler")
+    handler_module = importlib.import_module(
+        "litellm.responses.mcp.litellm_proxy_mcp_handler"
+    )
     monkeypatch.setattr(handler_module, "function_setup", fake_function_setup)
 
     tool_name = "deepwiki-read_wiki_structure"