STONfi liquidity pools are built on the constant product x*y=k model, forming the foundation for swaps across the TON ecosystem. On top of this base, STONfi introduces specialized pool variants optimized for different asset types and trading behaviors.

For pegged assets such as $USDT, $USDC, and $AquaUSD, STONfi deploys Stableswap and WStableSwap pools that use hybrid curves with an amplification parameter. This design keeps prices tightly aligned, enabling large trades with less than 0.1 percent slippage while reducing impermanent loss to near zero.

For volatile pairs, STONfi offers classic and weighted pools that balance flexibility with deep liquidity. Liquidity providers earn 100 percent of swap fees, with additional yield available through farming programs or advanced strategies such as looping via integrations like EVAA.