Base is an Ethereum Layer 2 built on the OP Stack. It inherits Ethereum's security while keeping fees a fraction of mainnet, making it a popular home for stablecoin payments and consumer apps.
Straight into the app: Swap ETH · Buy ETH · Sell ETH · Get UCASH with ETH
Optimistic Rollup (OP Stack). Settlement is non-custodial, on-chain to a wallet you control. Confirmation policy: Credited after a few L2 confirmations, typically under a minute; deeper finality on Ethereum L1..
A single U Account works across accept, swap, and buy. Pick where to start.
Take ETH in checkout alongside cards on 35 networks. White-label, non-custodial, live in minutes.
Trade ETH for any asset across the network, routed for the best price.
Get ETH with any asset you hold, one step, settled to your wallet.
Receive, hold, and settle ETH your way.
Tokens you can swap, accept, and settle on this network.
Every asset issued or deployed on the network, on one page.
The leading smart-contract blockchain and home of ERC-20.
Leading Ethereum L2 by activity.
Ethereum L2 and home of the OP Stack.
EVM sidechain built for fast, cheap payments.
The original proof-of-work blockchain and largest cryptocurrency.
High-throughput EVM chain for consumer apps.
The setup is deliberately short. One wallet capable of holding Base and a little ETH for gas on its chain, one receiving address for the output, and you have everything: a web3 name resolves to the address just as well as the raw string. Read the preview before signing, since it carries the whole trade at a glance, the amounts in and out, the fee, and the network cost. The wallet remains yours throughout and signs nothing you have not seen on screen, which is the whole security posture in one sentence.
Two costs, both visible up front. The platform charges a flat 0.50% all-in on the swap and nothing hidden behind it, no spread and no routing cut. The network charges its gas in ETH, settling with about 2 seconds blocks on Optimistic Rollup (OP Stack), itemized per leg in the preview. What settles is on-chain to the address you chose, under this asset's policy of Credited after a few L2 confirmations, typically under a minute; deeper finality on Ethereum L1., and once confirmed the balance is entirely yours to move with no platform anywhere in the path.
Execution runs through the aggregated DEX route, which means the number you approved is the number that happens or the transaction reverts: swaps are atomic, with no half-settled state to unwind and no exposure window between legs. If a route cannot fill at your approved bounds it fails cleanly and you re-quote, which is the failure mode you want, cheap and loud rather than silent and expensive.
One account unlocks accept, swap, buy, and the rest of the U.CASH network across 35 networks.