---
title: "Basics"
description: ""
icon: "play"
mode: "wide"
---

You can add custom tools to our [default tools](https://github.com/browser-use/browser-use/blob/main/browser_use/controller/service.py).

Examples:
- deterministic clicks
- file handling
- calling APIs
- human-in-the-loop
- browser interactions
- calling other LLMs
...


## Quick Example


```python
from browser_use import Controller, ActionResult

controller = Controller()

@controller.action(description='Ask human for help with a question')
def ask_human(question: str) -> ActionResult:
    answer = input(f'{question} > ')
    return f'The human responded with: {answer}'

agent = Agent(
    task='Ask human for help',
    llm=llm,
    controller=controller,
)
```