fix(_types): restore ResponsesAPIResponse import and add use_xai_oauth to filter list

Two related fixes:
1. Re-add ResponsesAPIResponse import in _types.py — it was removed but still
   needed in PassThroughEndpointLoggingResultValues (used in
   openai_passthrough_logging_handler.py).
2. Add use_xai_oauth to all_litellm_params so it is filtered before forwarding
   kwargs to providers like OpenAI that do not recognize it.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

litellm/proxy/_types.py

@@ -23,6 +23,7 @@ from litellm.litellm_core_utils.initialize_dynamic_callback_params import (
 from litellm.types.integrations.slack_alerting import AlertType
 from litellm.types.llms.openai import (
     AllMessageValues,
+    ResponsesAPIResponse,
 )
 from litellm.types.mcp import (
     MCPAuthType,
@@ -3834,6 +3835,7 @@ PassThroughEndpointLoggingResultValues = Union[
     EmbeddingResponse,
     VideoObject,
     StandardPassThroughResponseObject,
+    ResponsesAPIResponse,
 ]
 
 

litellm/types/utils.py

@@ -3224,6 +3224,7 @@ all_litellm_params = (
         "search_tool_name",
         "order",
         "enable_json_schema_validation",
+        "use_xai_oauth",
     ]
     + list(StandardCallbackDynamicParams.__annotations__.keys())
     + list(CustomPricingLiteLLMParams.model_fields.keys())