Uniswap Pay

Uniswap Pay is the on-chain payment functionality of Uniswap, the leading decentralized exchange founded in 2018, headquartered in the United States. Uniswap pioneered the automated market maker (AMM) model and remains the highest-volume DEX in crypto, enabling swaps across 500+ coins with no KYC and no custodial intermediary.

The “Pay” capability refers to using Uniswap’s swap infrastructure to settle crypto-denominated payments on-chain — a payer swaps into the token the payee wants and delivers it directly to the payee’s wallet, without routing through a traditional payment gateway. Uniswap’s deep liquidity pools make it the reference venue for on-chain token swaps across Ethereum and its Layer-2s.

Uniswap operates across Ethereum, Polygon, Arbitrum, Optimism, Base and other chains, with UniswapX as its aggregator/RFQ layer for better pricing. The protocol is governed by the UNI token holder community. As of August 2026, Uniswap continues to operate as the leading decentralized, non-custodial DEX.

Best for: Web3-native users and dApps that need decentralized, non-custodial token swaps with the deepest AMM liquidity and no KYC.

Uniswap charges a swap fee of approximately 0.05% on most stablecoin pools, with higher tiers (0.01%, 0.3%, 1%) on other pools depending on the token pair. The only additional cost is underlying network gas.

Cost model

• Swap fee — 0.05% on most stablecoin pools; 0.01%, 0.3% or 1% on other pools, paid to liquidity providers.
• Network gas — varies by chain; Layer-2s (Base, Arbitrum, Optimism) are significantly cheaper than Ethereum mainnet.
• Slippage — the difference between expected and executed price; reduced by Uniswap’s deep liquidity.

Settlement

• On-chain settlement at chain finality.
• Direct wallet-to-wallet delivery — no custodial hold.

Decentralized exchange & swaps

• AMM-based swaps — trade against liquidity pools rather than an order book.
• 500+ coins supported across multiple chains.
• Deepest AMM liquidity — Uniswap is the highest-volume DEX in crypto.
• Non-custodial — funds remain in user wallets until confirmation.
• No KYC — fully decentralized, no identity verification.

UniswapX

• Aggregator and RFQ layer for better pricing and reduced MEV exposure.
• Routes orders through market makers and liquidity sources for optimal execution.

On-chain payment capability

• Swap-and-send — payers can swap into the payee’s preferred token and deliver it on-chain.
• Suitable for Web3-native payment flows where both parties hold crypto wallets.

Multi-chain

• Ethereum, Polygon, Arbitrum, Optimism, Base and more.