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fix(aws): keep toolConfig when tool_choice="none" to prevent ValidationException #5595

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fix(aws): keep toolConfig when tool_choice="none" to prevent ValidationException #5595

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4 changes: 2 additions & 2 deletions livekit-plugins/livekit-plugins-aws/livekit/plugins/aws/llm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -158,8 +158,8 @@ def _get_tool_config() -> dict[str, Any] | None:
tool_config["toolChoice"] = {"any": {}}
elif tool_choice == "auto":
tool_config["toolChoice"] = {"auto": {}}
else:
return None
# tool_choice="none" means no forced tool use; omit toolChoice but keep toolConfig
# so AWS does not raise ValidationException when tool use/result blocks are present

return tool_config

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