The Message class is designed to send, stream, update or remove messages.

Parameters

content
str

The content of the message.

author
str

The author of the message, defaults to the chatbot name defined in your config file.

elements
Element[]

Elements to attach to the message.

actions
Action[]

Actions to attach to the message.

disable_feedback
bool

Hide the feedback buttons for this specific message.

language
str

Language of the code if the content is code. See https://react-code-blocks-rajinwonderland.vercel.app/?path=/story/codeblock—supported-languages for a list of supported languages.

Send a message

Send a new message to the UI.

import chainlit as cl


@cl.on_message
async def main(message: cl.Message):
    await cl.Message(
        content=f"Received: {message.content}",
    ).send()

Stream a message

Send a message token by token to the UI.

import chainlit as cl

token_list = ["the", "quick", "brown", "fox"]


@cl.on_chat_start
async def main():
    msg = cl.Message(content="")
    for token in token_list:
        await msg.stream_token(token)

    await msg.send()

Update a message

Update a message that already has been sent.

import chainlit as cl


@cl.on_chat_start
async def main():
    msg = cl.Message(content="Hello!")
    await msg.send()

    await cl.sleep(2)

    msg.content = "Hello again!"
    await msg.update()

Remove a message

Remove a message from the UI.

import chainlit as cl


@cl.on_chat_start
async def main():
    msg = cl.Message(content="Message 1")
    await msg.send()
    await cl.sleep(2)
    await msg.remove()