Stellar launched Protocol 18 on Nov. 3, integrating native automated market maker (AMM) functionality into its Layer 1 DEX. The upgrade enables permissionless liquidity pool creation with fixed 0.3% fees, positioning Stellar as the first L1 blockchain with AMM capabilities built directly into its protocol.

Stellar's Protocol 18 went live on Nov. 3 after community approval, adding native automated market maker (AMM) functionality to its Layer 1 decentralized exchange. The upgrade enables developers to create permissionless liquidity pools between any two assets with fixed 0.3% trading fees, similar to Uniswap v2. AMMs simplify market maker operations, reduce spreads, and improve capital efficiency compared to order books. Stellar claims it is the first L1 blockchain to integrate AMM capabilities directly into its protocol. The SDF urged developers to update software and SDKs, and several ecosystem projects are launching in November to coincide with the upgrade.