# RealtimeServerEventResponseMcpCallInProgress
## Properties
Name | Type | Description | Notes
------------ | ------------- | ------------- | -------------
**event_id** | **String** | The unique ID of the server event. |
**r#type** | Option<[**serde_json::Value**](.md)> | |
**output_index** | **i32** | The index of the output item in the response. |
**item_id** | **String** | The ID of the MCP tool call item. |
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