Founded in 2020 by Joey Zacherl, Rook is an open, transparent and distributed MEV marketplace for Ethereum. The Rook protocol helps in capturing a transaction’s MEV at the application layer, followed by its redistribution to protocols and users who generate it. It’s an application layer mempool that can be utilized without making any changes to the underlying blockchain protocol. There are three ways of using Rook – through its trading app, transaction relay, or smart contract integration.