setMyDescription

Use this method to change the bot's description, which is shown in the chat with the bot if the chat is empty

Parameters for set-my-description
Field Description
description New bot description; 0-512 characters
Pass an empty string to remove the dedicated description for the given language.
language_code A two-letter ISO 639-1 language code
If empty, the description will be applied to all users for whose language there is no dedicated description.