Thread by @sudoswap

As we gear up for public launch of the new sudoswap marketplace, we're open-sourcing the NFT AMM smart contract code that powers everything behind the scenes.

From a high-level overview, LPs create pools that hold NFTs or tokens, and traders can swap with those pools.

We use a modified minimal proxy pattern for low gas overhead. Deploying a new pool costs ~180k gas, excluding the gas for NFT transfers. Additionally, pre-existing pools can be reused for the same collection.

For pool pricing, we use a flexible bonding curve interface. Though we're launching with just a linear and exponential curve, the interface allows for a wide range of curves that can be stateful, including gradual dutch auction style curves and inventory-aware pricing.

Swaps are designed to be low gas even in the case where only 1 NFT is being transferred, with additional efficiency gains when buying/selling multiple NFTs at a time.

Contracts and tests on GitHub here, licensed under AGPL v3:

github.com/sudoswap/lssvm

Want to start messing around immediately? The current set of contracts have been verified on mainnet, and can be found here:

docs.sudoswap.xyz/contracts/

We're also opening a new Discord server for sudoAMM specific discussion. Hop in for the latest updates:

discord.gg/KWHFhVnfue