Many best practices are introduced in xDeFi ecosystem, including but restricted to : xDEX as one of optimized AMM DEXes, xHalfLife as a money stream protocol, xSTA as a stable coin minted from crypto assets, xNSure as capped-style European option trading platform and liquidity solution, xBadge as a incentive-driven NFT project to encourage behavior beneeficial for the ecosystem based on social consensus, and any other DeFi building blocks which are essential for a well-ordered market.