# RunStepDeltaStepDetailsToolCallsFunctionObjectFunction
## Properties
**name** | Option<**String**> | The name of the function. | [optional]
**arguments** | Option<**String**> | The arguments passed to the function. | [optional]
**output** | Option<**String**> | The output of the function. This will be `null` if the outputs have not been [submitted](/docs/api-reference/runs/submitToolOutputs) yet. | [optional]
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