Searcher Bots
Searcher bots are automated software programs designed to monitor the mempool continuously for profitable opportunities within decentralized finance protocols. These bots analyze pending transactions to identify potential arbitrage, liquidations, or sandwich opportunities that can be executed on-chain.
Once a profitable scenario is detected, the bot automatically constructs a transaction and submits it to the network with an optimized fee to ensure quick inclusion. Searcher bots compete against one another in a high-speed environment to capture these opportunities, often driving the efficiency of decentralized markets.
However, their operations also contribute to mempool congestion and higher gas prices for regular users. They are the primary agents behind the extraction of MEV and represent the technical infrastructure required to participate in advanced blockchain trading.