> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# FunctionCallItem - Python SDK

> FunctionCallItem method reference

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

A function call initiated by the model

## Fields

| Field       | Type                                                                                                 | Required             | Description                                                                                     | Example   |
| ----------- | ---------------------------------------------------------------------------------------------------- | -------------------- | ----------------------------------------------------------------------------------------------- | --------- |
| `arguments` | *str*                                                                                                | :heavy\_check\_mark: | N/A                                                                                             |           |
| `call_id`   | *str*                                                                                                | :heavy\_check\_mark: | N/A                                                                                             |           |
| `id`        | *str*                                                                                                | :heavy\_check\_mark: | N/A                                                                                             |           |
| `name`      | *str*                                                                                                | :heavy\_check\_mark: | N/A                                                                                             |           |
| `namespace` | *Optional\[str]*                                                                                     | :heavy\_minus\_sign: | Namespace qualifier for tools registered as part of a namespace tool group (e.g. an MCP server) |           |
| `status`    | [Optional\[components.ToolCallStatus\]](../components/toolcallstatus.md)                             | :heavy\_minus\_sign: | N/A                                                                                             | completed |
| `type`      | [components.FunctionCallItemType](/client-sdks/python/api-reference/components/functioncallitemtype) | :heavy\_check\_mark: | N/A                                                                                             |           |