diff --git a/litellm/proxy/guardrails/guardrail_endpoints.py b/litellm/proxy/guardrails/guardrail_endpoints.py
index c0c87842427..07702252a10 100644
--- a/litellm/proxy/guardrails/guardrail_endpoints.py
+++ b/litellm/proxy/guardrails/guardrail_endpoints.py
@@ -15,6 +15,7 @@ from litellm.proxy._types import UserAPIKeyAuth
 from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
 from litellm.proxy.guardrails.guardrail_registry import GuardrailRegistry
 from litellm.types.guardrails import (
+    BaseLitellmParams,
     PII_ENTITY_CATEGORIES_MAP,
     ApplyGuardrailRequest,
     ApplyGuardrailResponse,
@@ -178,11 +179,16 @@ async def list_guardrails_v2():
                 unmasked_length=4,
                 number_of_asterisks=4,
             )
+            masked_litellm_params = (
+                BaseLitellmParams(**masked_litellm_params_dict)
+                if masked_litellm_params_dict
+                else None
+            )
             guardrail_configs.append(
                 GuardrailInfoResponse(
                     guardrail_id=guardrail.get("guardrail_id"),
                     guardrail_name=guardrail.get("guardrail_name"),
-                    litellm_params=masked_litellm_params_dict,
+                    litellm_params=masked_litellm_params,
                     guardrail_info=guardrail.get("guardrail_info"),
                     created_at=guardrail.get("created_at"),
                     updated_at=guardrail.get("updated_at"),
@@ -196,19 +202,27 @@ async def list_guardrails_v2():
         for guardrail in in_memory_guardrails:
             # only add guardrails that are not in DB guardrail list already
             if guardrail.get("guardrail_id") not in seen_guardrail_ids:
-                in_memory_litellm_params = dict(
-                    guardrail.get("litellm_params") or {}
-                )
+                in_memory_litellm_params_raw = guardrail.get("litellm_params")
+                in_memory_litellm_params_dict = (
+                    in_memory_litellm_params_raw.model_dump(exclude_none=True)
+                    if isinstance(in_memory_litellm_params_raw, LitellmParams)
+                    else in_memory_litellm_params_raw
+                ) or {}
                 masked_in_memory_litellm_params = _get_masked_values(
-                    in_memory_litellm_params,
+                    in_memory_litellm_params_dict,
                     unmasked_length=4,
                     number_of_asterisks=4,
                 )
+                masked_in_memory_litellm_params_typed = (
+                    BaseLitellmParams(**masked_in_memory_litellm_params)
+                    if masked_in_memory_litellm_params
+                    else None
+                )
                 guardrail_configs.append(
                     GuardrailInfoResponse(
                         guardrail_id=guardrail.get("guardrail_id"),
                         guardrail_name=guardrail.get("guardrail_name"),
-                        litellm_params=masked_in_memory_litellm_params,
+                        litellm_params=masked_in_memory_litellm_params_typed,
                         guardrail_info=dict(guardrail.get("guardrail_info") or {}),
                         guardrail_definition_location="config",
                     )
@@ -688,11 +702,16 @@ async def get_guardrail_info(guardrail_id: str):
             unmasked_length=4,
             number_of_asterisks=4,
         )
+        masked_litellm_params = (
+            BaseLitellmParams(**masked_litellm_params_dict)
+            if masked_litellm_params_dict
+            else None
+        )
 
         return GuardrailInfoResponse(
             guardrail_id=result.get("guardrail_id"),
             guardrail_name=result.get("guardrail_name"),
-            litellm_params=masked_litellm_params_dict,
+            litellm_params=masked_litellm_params,
             guardrail_info=dict(result.get("guardrail_info") or {}),
             created_at=result.get("created_at"),
             updated_at=result.get("updated_at"),