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litellm_fix: handle empty dict for web_search_options in Nova grounding #20159

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Merged
ishaan-jaff merged 1 commit into from
Jan 31, 2026
Merged

litellm_fix: handle empty dict for web_search_options in Nova grounding #20159

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4 changes: 3 additions & 1 deletion litellm/llms/bedrock/chat/converse_transformation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -805,7 +805,9 @@ def map_openai_params(
if bedrock_tier in ("default", "flex", "priority"):
optional_params["serviceTier"] = {"type": bedrock_tier}

if param == "web_search_options" and value and isinstance(value, dict):
if param == "web_search_options" and isinstance(value, dict):
# Note: we use `isinstance(value, dict)` instead of `value and isinstance(value, dict)`
# because empty dict {} is falsy but is a valid way to enable Nova grounding
grounding_tool = self._map_web_search_options(value, model)
if grounding_tool is not None:
optional_params = self._add_tools_to_optional_params(
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