fix(bedrock_mantle): log additional_tools hoist at debug level

litellm/llms/bedrock_mantle/responses/transformation.py

@@ -177,6 +177,12 @@ class BedrockMantleResponsesAPIConfig(BedrockMantleAuthMixin, OpenAIResponsesAPI
             return input, []
         remaining_input = [item for item in input if not cls._is_codex_additional_tools_item(item)]
         hoisted_tools = [tool for item in additional_tools_items for tool in cls._tools_of_additional_tools_item(item)]
+        verbose_logger.debug(
+            "Bedrock Mantle Responses API: hoisting %d tool(s) out of %d 'additional_tools' input item(s) "
+            "into the top-level tools param (Mantle rejects that input item type).",
+            len(hoisted_tools),
+            len(additional_tools_items),
+        )
         return remaining_input, cls._filter_unsupported_tools(hoisted_tools)
 
     def map_openai_params(

tests/test_litellm/llms/bedrock_mantle/test_bedrock_mantle_responses_transformation.py

@@ -495,6 +495,21 @@ class TestBedrockMantleCodexAdditionalTools:
         assert body["input"] == [self._USER_MESSAGE]
         assert "tools" not in body
 
+    def test_hoist_is_logged_at_debug_level(self):
+        from unittest.mock import patch
+
+        with patch(
+            "litellm.llms.bedrock_mantle.responses.transformation.verbose_logger.debug"
+        ) as mock_debug:
+            self._transform(
+                input=[
+                    {"type": "additional_tools", "role": "developer", "tools": self._CODEX_TOOLS},
+                    self._USER_MESSAGE,
+                ]
+            )
+        assert mock_debug.call_count == 1
+        assert "additional_tools" in str(mock_debug.call_args)
+
 
 class TestBedrockMantleResponsesRegistry:
     def test_registry_returns_config_for_gpt_5_5(self, local_cost_map):