# RunStepDetailsToolCallsObject
## Properties
**r#type** | **String** | Always `tool_calls`. |
**tool_calls** | [**Vec<models::RunStepDetailsToolCallsObjectToolCallsInner>**](RunStepDetailsToolCallsObject_tool_calls_inner.md) | An array of tool calls the run step was involved in. These can be associated with one of three types of tools: `code_interpreter`, `file_search`, or `function`. |
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