# ChatStreamingMessageToolCall

Tool call delta for streaming responses


## Fields

| Field                                                                                                              | Type                                                                                                               | Required                                                                                                           | Description                                                                                                        | Example                                                                                                            |
| ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------ |
| `index`                                                                                                            | *float*                                                                                                            | :heavy_check_mark:                                                                                                 | Tool call index in the array                                                                                       | 0                                                                                                                  |
| `id`                                                                                                               | *Optional[str]*                                                                                                    | :heavy_minus_sign:                                                                                                 | Tool call identifier                                                                                               | call_abc123                                                                                                        |
| `type`                                                                                                             | [Optional[components.ChatStreamingMessageToolCallType]](../components/chatstreamingmessagetoolcalltype.md)         | :heavy_minus_sign:                                                                                                 | Tool call type                                                                                                     | function                                                                                                           |
| `function`                                                                                                         | [Optional[components.ChatStreamingMessageToolCallFunction]](../components/chatstreamingmessagetoolcallfunction.md) | :heavy_minus_sign:                                                                                                 | Function call details                                                                                              |                                                                                                                    |