> ## 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.

# OpenAIResponsesToolChoiceUnion - Python SDK

> OpenAIResponsesToolChoiceUnion method reference

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

## Supported Types

### `components.OpenAIResponsesToolChoiceAuto`

```python lines theme={null}
value: components.OpenAIResponsesToolChoiceAuto = /* values here */
```

### `components.OpenAIResponsesToolChoiceNone`

```python lines theme={null}
value: components.OpenAIResponsesToolChoiceNone = /* values here */
```

### `components.OpenAIResponsesToolChoiceRequired`

```python lines theme={null}
value: components.OpenAIResponsesToolChoiceRequired = /* values here */
```

### `components.OpenAIResponsesToolChoiceFunction`

```python lines theme={null}
value: components.OpenAIResponsesToolChoiceFunction = /* values here */
```

### `components.OpenAIResponsesToolChoice`

```python lines theme={null}
value: components.OpenAIResponsesToolChoice = /* values here */
```