Discord Bot

A discord bot is very powerful. One can program it to do anything.

Go to https://discord.com/developers/applications to create an applicaiton and bot
Go to Bot tab and enable the privileged Gateway Intents. This is needed for bot to read messages.
Go to OAuth2 tab and select the bot scope. Select required permissions (choose administrator to get all permission). Copy the link and open it in a new tab. Select the server you want to add the bot to and click Authorize.
Go to Bot tab and copy the Token. The token is used to login to the bot.

Sample Code

Python

pip install -U discord.py

import discord
 
class MyClient(discord.Client):
    async def on_ready(self):
        print(f'Logged on as {self.user}!')
 
    async def on_message(self, message: discord.Message):
        print(f'Message from {message.author}: {message.content}')
        if message.author.bot:
            return;
        await message.channel.send("I am bot")
 
intents = discord.Intents.default()
intents.message_content = True
 
client = MyClient(intents=intents)
client.run('TOKEN_HERE')

JavaScript

npm i discord.js

Note that, JavaScript version requires GuildMessages and Guilds intents to be enabled, while Python version does not.

const { Client, IntentsBitField } = require("discord.js");
const token = "TOKEN_HERE";
 
// Create a new client instance
const client = new Client({
  intents: [
    IntentsBitField.Flags.MessageContent,
    IntentsBitField.Flags.GuildMessages,
    IntentsBitField.Flags.Guilds,
  ],
});
 
// When the client is ready, run this code
client.once("ready", () => {
  console.log("Bot is online!");
});
 
// Listen for messages
client.on("messageCreate", (message) => {
  // Ignore messages from bots
  if (message.author.bot) return;
 
  // Log the message content to the console
  console.log(`Message received: ${message.content}`);
  message.channel.send("hey I am bot");
});
 
// Replace 'YOUR_BOT_TOKEN' with your actual bot token
client.login(token);

Use bot to clear all messages in a channel

client.on("messageCreate", (message) => {
  // Ignore messages from bots
  if (message.author.bot) return;
 
  if (message.content === '!clear') {
    message.channel.messages.fetch().then(messages => {
      message.channel.bulkDelete(messages);
    });
  }
});

Reference

Discord Bot with Python YouTube Playlist

Discord Bot

Sample Code

Python

JavaScript

Reference

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