---
title: "ShellServerToolEngine"
---

Which shell engine to use. "openrouter" runs commands server-side in the OpenRouter sandbox. "auto" (default) keeps the provider's native hosted shell when available (OpenAI); on other providers the call is routed to the OpenRouter sandbox.

## Example Usage

```python
from openrouter.components import ShellServerToolEngine

# Open enum: unrecognized values are captured as UnrecognizedStr
value: ShellServerToolEngine = "auto"
```


## Values

This is an open enum. Unrecognized values will not fail type checks.

- `"auto"`
- `"openrouter"`