diff --git a/litellm/proxy/hooks/proxy_track_cost_callback.py b/litellm/proxy/hooks/proxy_track_cost_callback.py
index ca8341822e9..b78884f7d95 100644
--- a/litellm/proxy/hooks/proxy_track_cost_callback.py
+++ b/litellm/proxy/hooks/proxy_track_cost_callback.py
@@ -273,13 +273,16 @@ class _ProxyDBLogger(CustomLogger):
             # guardrail_information is missing from SLP. Populate it from post-call evals
             # before spend-log write so reports show accurate guardrail results.
             if sl_object is not None:
+                litellm_metadata: Final = kwargs.get("litellm_metadata")
                 guardrail_info_from_hooks: Final = (
-                    kwargs.get("litellm_metadata", {}).get("standard_logging_guardrail_information")
-                    if isinstance(kwargs.get("litellm_metadata"), dict)
+                    litellm_metadata.get("standard_logging_guardrail_information")
+                    if isinstance(litellm_metadata, dict)
                     else None
                 )
                 if guardrail_info_from_hooks is not None and not sl_object.get("guardrail_information"):
-                    sl_object["guardrail_information"] = guardrail_info_from_hooks
+                    sl_object["guardrail_information"] = (
+                        guardrail_info_from_hooks  # mutable-ok: populate SLP before spend-log write
+                    )
 
             if response_cost is not None:
                 user_api_key: Final = metadata.get("user_api_key", None)