How Telegram and Discord bots work
What a chat bot really is, how it talks to Telegram or Discord, where it runs, and what bots can and can't do.
A bot is just a program with a chat account
A bot looks like a user in your chat, but behind it is a program running on a server. When someone sends a message or clicks a button, Telegram or Discord passes that event to the program, the program decides what to do, and sends a reply back.
How the connection works
Both platforms give each bot a secret token, like a password. The program uses it to talk to the platform's API. Telegram can either push messages to your server (a webhook) or let the bot ask for new ones (polling). Discord bots usually keep a live connection open to receive events instantly.
Where bots run
Because a bot has to answer at any time, it runs on a server that's always on, not on your laptop. Small bots need very little computing power. Bots that store data, like orders or user settings, also need a database.
What bots can do
Reply to commands, show buttons and menus, send scheduled messages, manage roles and permissions, accept payments through supported providers, and connect to other services such as spreadsheets, stores or AI models.
What they can't do
Bots only see what the platform allows. They can't read private chats they aren't part of, and they must follow each platform's rules and rate limits. Keeping the token secret is essential: anyone with it can control the bot.
Want to try one?
On Telegram, you create a bot by messaging @BotFather. On Discord, you create an application in the Developer Portal. From there, a few lines of Python or JavaScript are enough for a bot that says hello.
Related service: Telegram bot developer