Ekubo is a concentrated-liquidity automated market maker first deployed on Starknet in August 2023 and later on Ethereum and Arbitrum. It combines a singleton contract, a "till" settlement pattern that nets token transfers at the end of a transaction, and tick sizes of one hundredth of a basis point, and supports permissionless extensions including onchain limit orders, TWAMM-based DCA orders, and oracle pools. Protocol-level withdrawal fees flow to the Ekubo DAO, which uses them to buy back EKUBO; the token's 10 million supply is fully distributed with no vesting.