Eco is a protocol for stablecoins and the apps that use them. It enables applications to unlock stablecoin liquidity from any connected chain, providing users with a seamless on-chain experience. Eco combines an Ethereum-based rollup and a permissionless liquidity network designed from the ground up for capital-efficient transaction execution. It employs an intent-based transfer system that powers a chain-abstracted account framework, creating an abstraction layer for any stablecoin and making Eco the central liquidity hub for stablecoins on Ethereum and beyond.