diff --git a/docs/my-website/docs/proxy/config_settings.md b/docs/my-website/docs/proxy/config_settings.md
index 4333b0afc16..b749ddf2562 100644
--- a/docs/my-website/docs/proxy/config_settings.md
+++ b/docs/my-website/docs/proxy/config_settings.md
@@ -211,7 +211,7 @@ general_settings:
 | pass_through_endpoints | List[Dict[str, Any]] | Define the pass through endpoints. [Docs](./pass_through) |
 | enable_oauth2_proxy_auth | boolean | (Enterprise Feature) If true, enables oauth2.0 authentication |
 | forward_openai_org_id | boolean | If true, forwards the OpenAI Organization ID to the backend LLM call (if it's OpenAI). |
-| forward_client_headers_to_llm_api | boolean | If true, forwards the client headers (any `x-` headers) to the backend LLM call |
+| forward_client_headers_to_llm_api | boolean | If true, forwards the client headers (any `x-` headers and `anthropic-beta` headers) to the backend LLM call |
 | maximum_spend_logs_retention_period               | str                   | Used to set the max retention time for spend logs in the db, after which they will be auto-purged                                                                                                                                                                                                                             |
 | maximum_spend_logs_retention_interval | str | Used to set the interval in which the spend log cleanup task should run in.                                                                                                                                                                                                                                                   |
 ### router_settings - Reference
diff --git a/litellm/proxy/db/db_spend_update_writer.py b/litellm/proxy/db/db_spend_update_writer.py
index a5398fa7f2f..e3338a84607 100644
--- a/litellm/proxy/db/db_spend_update_writer.py
+++ b/litellm/proxy/db/db_spend_update_writer.py
@@ -875,7 +875,8 @@ class DBSpendUpdateWriter:
                                     ),
                                     "mcp_namespaced_tool_name": transaction.get(
                                         "mcp_namespaced_tool_name"
-                                    ),
+                                    )
+                                    or "",
                                 }
                             }
 
diff --git a/litellm/proxy/litellm_pre_call_utils.py b/litellm/proxy/litellm_pre_call_utils.py
index f7ab4e06eb6..13bbf97beb3 100644
--- a/litellm/proxy/litellm_pre_call_utils.py
+++ b/litellm/proxy/litellm_pre_call_utils.py
@@ -141,28 +141,41 @@ def convert_key_logging_metadata_to_callback(
 
     return team_callback_settings_obj
 
+
 class KeyAndTeamLoggingSettings:
     """
     Helper class to get the dynamic logging settings for the key and team
     """
+
     @staticmethod
     def get_key_dynamic_logging_settings(user_api_key_dict: UserAPIKeyAuth):
-        if user_api_key_dict.metadata is not None and "logging" in user_api_key_dict.metadata:
+        if (
+            user_api_key_dict.metadata is not None
+            and "logging" in user_api_key_dict.metadata
+        ):
             return user_api_key_dict.metadata["logging"]
         return None
 
     @staticmethod
     def get_team_dynamic_logging_settings(user_api_key_dict: UserAPIKeyAuth):
-        if user_api_key_dict.team_metadata is not None and "logging" in user_api_key_dict.team_metadata:
+        if (
+            user_api_key_dict.team_metadata is not None
+            and "logging" in user_api_key_dict.team_metadata
+        ):
             return user_api_key_dict.team_metadata["logging"]
         return None
 
+
 def _get_dynamic_logging_metadata(
     user_api_key_dict: UserAPIKeyAuth, proxy_config: ProxyConfig
 ) -> Optional[TeamCallbackMetadata]:
     callback_settings_obj: Optional[TeamCallbackMetadata] = None
-    key_dynamic_logging_settings: Optional[dict] = KeyAndTeamLoggingSettings.get_key_dynamic_logging_settings(user_api_key_dict)
-    team_dynamic_logging_settings: Optional[dict] = KeyAndTeamLoggingSettings.get_team_dynamic_logging_settings(user_api_key_dict)
+    key_dynamic_logging_settings: Optional[dict] = (
+        KeyAndTeamLoggingSettings.get_key_dynamic_logging_settings(user_api_key_dict)
+    )
+    team_dynamic_logging_settings: Optional[dict] = (
+        KeyAndTeamLoggingSettings.get_team_dynamic_logging_settings(user_api_key_dict)
+    )
     #########################################################################################
     # Key-based callbacks
     #########################################################################################
@@ -267,6 +280,8 @@ class LiteLLMProxyRequestSetup:
         Get the headers that should be forwarded to the LLM Provider.
 
         Looks for any `x-` headers and sends them to the LLM Provider.
+
+        [07/09/2025] - Support 'anthropic-beta' header as well.
         """
         forwarded_headers = {}
         for header, value in headers.items():
@@ -274,6 +289,8 @@ class LiteLLMProxyRequestSetup:
                 "x-stainless"
             ):  # causes openai sdk to fail
                 forwarded_headers[header] = value
+            elif header.lower().startswith("anthropic-beta"):
+                forwarded_headers[header] = value
 
         return forwarded_headers
 
diff --git a/tests/proxy_unit_tests/test_proxy_server.py b/tests/proxy_unit_tests/test_proxy_server.py
index a515f6bbaa3..ca3df5e8cf8 100644
--- a/tests/proxy_unit_tests/test_proxy_server.py
+++ b/tests/proxy_unit_tests/test_proxy_server.py
@@ -211,6 +211,7 @@ def test_add_headers_to_request(litellm_key_header_name):
         "Authorization": "Bearer 1234",
         "X-Custom-Header": "Custom-Value",
         "X-Stainless-Header": "Stainless-Value",
+        "anthropic-beta": "beta-value",
     }
     request = Request(scope={"type": "http"})
     request._url = URL(url="/chat/completions")
@@ -219,7 +220,10 @@ def test_add_headers_to_request(litellm_key_header_name):
     forwarded_headers = LiteLLMProxyRequestSetup._get_forwardable_headers(
         request_headers
     )
-    assert forwarded_headers == {"X-Custom-Header": "Custom-Value"}
+    assert forwarded_headers == {
+        "X-Custom-Header": "Custom-Value",
+        "anthropic-beta": "beta-value",
+    }
 
 
 @pytest.mark.parametrize(