> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-5b6e02fd.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ChatStreamingMessageToolCall - Python SDK

> ChatStreamingMessageToolCall method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

## Fields

| Field      | Type                                                                                                                 | Required             | Description |
| ---------- | -------------------------------------------------------------------------------------------------------------------- | -------------------- | ----------- |
| `index`    | *float*                                                                                                              | :heavy\_check\_mark: | N/A         |
| `id`       | *Optional\[str]*                                                                                                     | :heavy\_minus\_sign: | N/A         |
| `type`     | *Optional\[Literal\["function"]]*                                                                                    | :heavy\_minus\_sign: | N/A         |
| `function` | [Optional\[components.ChatStreamingMessageToolCallFunction\]](../components/chatstreamingmessagetoolcallfunction.md) | :heavy\_minus\_sign: | N/A         |