Uniswap provides decentralized liquidity to power the token swaps initiated through XSwap, enabling permissionless exchange as part of Mastercard’s onchain payment route

Quotes that support claims

Uniswap execute the final token swap on decentralized markets.

This exchange sources liquidity from DEX protocols like Uniswap to finalize swaps on-chain.

Shift4 will provide "seamless card processing" using Uniswap and other liquidity sources.