> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ContainerFileSource

Container files are always produced by the assistant sandbox.

## Example Usage

```python theme={null}
from openrouter.components import ContainerFileSource
value: ContainerFileSource = "assistant"
```

## Values

* `"assistant"`