> ## 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.

# ChatStreamToolCallFunction - Python SDK

> ChatStreamToolCallFunction method reference

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

Function call details

## Fields

| Field       | Type             | Required             | Description                       | Example               |
| ----------- | ---------------- | -------------------- | --------------------------------- | --------------------- |
| `arguments` | *Optional\[str]* | :heavy\_minus\_sign: | Function arguments as JSON string | `{"location": "..."}` |
| `name`      | *Optional\[str]* | :heavy\_minus\_sign: | Function name                     | get\_weather          |