Sniper bots (or "snipe bots") are automated bots that monitor time-based activity and submit information at the very last moment, removing the opportunity for other people to respond to that action.
BSC sniper bot (PancakeSwap sniper bot) is used to buy tokens as soon as they are added to the PancakeSwap DEX. With the bot, user can buy tokens before anyone else for a lower price and sell the tokens later for profit.