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

# on_chat_start

Hook to react to the user websocket connection event.

## Usage

```python Code Example theme={null}
from chainlit import AskUserMessage, Message, on_chat_start


@on_chat_start
async def main():
    res = await AskUserMessage(content="What is your name?", timeout=30).send()
    if res:
        await Message(
            content=f"Your name is: {res['output']}.\nChainlit installation is working!\nYou can now start building your own chainlit apps!",
        ).send()
```