MetaStreet is a yield infrastructure protocol that transforms high yield sources into tradable assets. It features an Automatic Tranche Maker (ATM) for permissionless lending and a Liquid Credit Token (LCT) representing lender positions. MetaStreet aims to enhance lending protocols by eliminating reliance on centralized price oracles, introducing dynamic interest rates, and facilitating permissionless pool creation. LCTs offer benefits like enabling long-duration loans, supporting stable floor prices, and maximizing yield through composability in DeFi.