> For the complete documentation index, see [llms.txt](https://reactors.gitbook.io/reactor/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://reactors.gitbook.io/reactor/amm/page-1.md). # AMM V2 Reactor's V2 AMM is based on UniV2 constant formula, with a custom implementation of a Solidly-type logic for stables. The Reactor AMM is the core of our ecosystem-oriented approach, designed with the following principles in mind: * A high level of flexibility and customization * An optimized trading efficiency for users * Providing support to protocols' growth by adapting to their needs This reflection led us to develop our AMM V2, which includes a dual-liquidity model for our pairs and introduces dynamic directional fees as well as a swap referral mechanism for partnering apps.