> ## Documentation Index
> Fetch the complete documentation index at: https://docs.camel-ai.org/llms.txt
> Use this file to discover all available pages before exploring further.
# Camel.toolkits.non visual browser toolkit.browser non visual toolkit
## BrowserNonVisualToolkit
```python theme={"system"}
class BrowserNonVisualToolkit(BaseToolkit):
```
A lightweight, *non-visual* browser toolkit exposing primitive
Playwright actions as CAMEL `FunctionTool`s.
### **init**
```python theme={"system"}
def __init__(self):
```
### **del**
```python theme={"system"}
def __del__(self):
```
Best-effort cleanup when toolkit is garbage collected.
1. We *avoid* running during the Python interpreter shutdown phase
(`sys.is_finalizing()`), because the import machinery and/or event
loop may already be torn down which leads to noisy exceptions such
as `ImportError: sys.meta_path is None` or
`RuntimeError: Event loop is closed`.
2. We protect all imports and event-loop operations with defensive
`try/except` blocks. This ensures that, even if cleanup cannot be
carried out, we silently ignore the failure instead of polluting
stderr on program exit.
### \_validate\_ref
```python theme={"system"}
def _validate_ref(self, ref: str, method_name: str):
```
Validate that ref parameter is a non-empty string.
### \_ensure\_agent
```python theme={"system"}
def _ensure_agent(self):
```
Create PlaywrightLLMAgent on first use if `web_agent_model`
provided.
### get\_tools
```python theme={"system"}
def get_tools(self):
```