slack-echo-bot.py

import os
from slack_bolt import App
from slack_bolt.adapter.socket_mode import SocketModeHandler

# App Level Token (for Socket Mode)
app_level_token = os.environ.get("SLACK_APP_TOKEN")  # xapp-*

# Bot Token
bot_token = os.environ.get("SLACK_BOT_TOKEN")  # xoxb-*

# Initialize the app with just the bot token
app = App(token=bot_token)

# Echo received message
@app.event("app_mention")
def handle_app_mention_events(body, say):
    event = body.get('event', {})
    thread_ts = event.get('ts')
    text = event.get('text', '')
    say(text=text, thread_ts=thread_ts)

# Start the app
if __name__ == "__main__":
    handler = SocketModeHandler(app, app_level_token)
    handler.start()