diff --git a/litellm/proxy/guardrails/guardrail_hooks/agent_365/agent_365.py b/litellm/proxy/guardrails/guardrail_hooks/agent_365/agent_365.py
index 8d0957ff2be..4830bfcafb0 100644
--- a/litellm/proxy/guardrails/guardrail_hooks/agent_365/agent_365.py
+++ b/litellm/proxy/guardrails/guardrail_hooks/agent_365/agent_365.py
@@ -27,6 +27,7 @@ from litellm.integrations.custom_guardrail import (
     CustomGuardrail,
     log_guardrail_information,
 )
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
 from litellm.llms.custom_httpx.http_handler import (
     AsyncHTTPHandler,
     get_async_httpx_client,
@@ -372,16 +373,16 @@ class Agent365Guardrail(CustomGuardrail):
             )
             if isinstance(session_id, str) and session_id:
                 return session_id
-        logging_obj: Final = data.get("litellm_logging_obj")
-        call_details: Final = getattr(logging_obj, "model_call_details", None)
-        if isinstance(call_details, Mapping):
-            tool_call_metadata: Final = call_details.get("mcp_tool_call_metadata")
+        raw_logging_obj: Final = data.get("litellm_logging_obj")
+        logging_obj: Final = raw_logging_obj if isinstance(raw_logging_obj, LiteLLMLoggingObj) else None
+        if logging_obj is not None:
+            tool_call_metadata: Final = logging_obj.model_call_details.get("mcp_tool_call_metadata")
             session_from_logging: Final = (
                 tool_call_metadata.get("mcp_session_id") if isinstance(tool_call_metadata, Mapping) else None
             )
             if isinstance(session_from_logging, str) and session_from_logging:
                 return session_from_logging
-        call_id: Final = data.get("litellm_call_id") or getattr(logging_obj, "litellm_call_id", None)
+        call_id: Final = data.get("litellm_call_id") or (logging_obj.litellm_call_id if logging_obj else None)
         if isinstance(call_id, str) and call_id:
             return call_id
         return str(uuid.uuid4())
diff --git a/tests/test_litellm/proxy/guardrails/guardrail_hooks/test_agent_365.py b/tests/test_litellm/proxy/guardrails/guardrail_hooks/test_agent_365.py
index 8245aba6d73..04460b150f5 100644
--- a/tests/test_litellm/proxy/guardrails/guardrail_hooks/test_agent_365.py
+++ b/tests/test_litellm/proxy/guardrails/guardrail_hooks/test_agent_365.py
@@ -7,6 +7,7 @@ import pytest
 from fastapi import HTTPException
 
 from litellm.exceptions import Timeout as LitellmTimeout
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
 from litellm.litellm_core_utils.secret_redaction import redact_string
 from litellm.proxy._types import UserAPIKeyAuth
 from litellm.proxy.guardrails.guardrail_hooks.agent_365 import (
@@ -295,10 +296,16 @@ class TestConversationId:
     async def test_falls_back_to_logging_obj_session_id(self):
         handler: Final = FakeHandler([_token_response(), _allow_response()])
         guardrail: Final = _make_guardrail(handler)
-        logging_obj: Final = SimpleNamespace(
-            model_call_details={"mcp_tool_call_metadata": {"mcp_session_id": "sess-from-logging"}},
+        logging_obj: Final = LiteLLMLoggingObj(
+            model="mcp",
+            messages=[],
+            stream=False,
+            call_type="call_mcp_tool",
+            start_time=None,
             litellm_call_id="call-id-1",
+            function_id="fn-1",
         )
+        logging_obj.model_call_details["mcp_tool_call_metadata"] = {"mcp_session_id": "sess-from-logging"}
         data: Final = _mcp_data(metadata={"headers": {}}, litellm_logging_obj=logging_obj)
         await _run(guardrail, data)
         assert handler.calls[1].json["conversationId"] == "sess-from-logging"