Controls which (if any) tool is called by the model.
"none"
"auto"
"required"
{"type": "function", "function": {"name": "my_function"}}
"none" is the default when no tools are present. "auto" is the default if tools are present.
Controls which (if any) tool is called by the model.
"none"means the model will not call any tool and instead generates a message."auto"means the model can pick between generating a message or calling one or more tools."required"means the model must call one or more tools.{"type": "function", "function": {"name": "my_function"}}forces the model to call that tool."none"is the default when no tools are present."auto"is the default if tools are present.