How U.CASH Swap works

Non-custodial · multi-chain

U.CASH Swap is a non-custodial DEX. It finds the best price for a token swap across the largest decentralized liquidity (every Uniswap EVM chain, Solana DEXes, and cross-chain bridges), and your own wallet signs the trade directly on-chain. We never hold, custody, or control your funds at any point.

The flow, step by step

Connect your wallet. Click Connect Wallet and approve your EVM wallet (e.g. MetaMask). Solana users connect Phantom/Solflare from the swap panel when Solana is selected.
Choose a pair and a chain. Pick the token you have and the token you want, on the source network. Want it on a different network? Set a destination and we route cross-chain.
We fetch the best route. Behind the scenes we query 0x (EVM), Jupiter (Solana), and LI.FI (cross-chain) and return the best rate, route, and estimated network fees.
Review the details. You see the rate, price impact, route hops, network fee, and the U.CASH fee before you confirm; nothing is hidden.
Your wallet signs. You approve the transaction in your wallet. For some trades (e.g. selling native ETH) this is a wrap → approve → swap flow, or a single transaction via our non-custodial router.
It settles on-chain. The swap executes against the DEX/bridge contracts and the output lands in your wallet. A small fee is taken from the output to support U.CASH.

What we never do

We never see, hold, or control your private keys or your funds.
We never custody balances; there is no U.CASH account that holds your crypto.
Swaps are settled by smart contracts and bridges, not by us.

Supported networks

EVM (18 chains including Ethereum, Polygon, Arbitrum, Optimism, Base, BNB Chain, Avalanche, Linea, Scroll, Mantle, Berachain, Monad, Plasma, World Chain, Unichain, Ink, Sonic, Abstract and HyperEVM) plus Solana, with cross-chain routing between networks via bridges. See the full live list and every deployed contract on the Networks & Contracts page.

Fees

U.CASH Swap earns a small affiliate fee on eligible swaps, taken from the swap output and shown before you confirm. Underlying protocols, liquidity pools, bridges, and your wallet may apply additional network, gas, or protocol fees.

Using this service is at your own risk. See the Terms & Risks.