Build the next generation of open applications and tools. Provide liquidity to pools on the Uniswap Protocol and earn fees on swaps. Uniswap products are powered by the Uniswap Protocol. The protocol is the largest onchain marketplace, with billions of dollars in weekly volume across thousands of tokens on Ethereum and 7+ additional chains.

Uniswap exchange has embraced Layer 2 scaling solutions to enhance transaction speed and reduce costs. These upgrades make trading more efficient for users worldwide. The integration of Layer 2 allows the Uniswap protocol to process transactions faster than Ethereum’s mainnet.

2024年2月19日 · Uniswap v2 is live on Arbitrum, Polygon, Optimism, Base, Binance Smart Chain, and Avalanche. Seamlessly swap and provide liquidity on v2 on all supported chains directly through the Uniswap interface .

2020年3月22日 · Uniswap V2 implements new functionality that enables highly decentralized and manipulation-resistant on-chain price feeds. This is achieved by measuring prices when they are expensive to manipulate, and cleverly accumulating historical data.

2020年5月17日 · Uniswap v2, the second iteration of the Uniswap protocol, has been deployed to the Ethereum mainnet! An audit report and formal verification has already been released and the Uniswap v2 Bug Bounty has been running for over a month.

2025年2月10日 · Uniswap v2 launched in May 2020 and brought many upgrades to the Uniswap Protocol. Users could now trade any Ethereum-based (or ERC-20) token for any other ERC-20 token rather than just trading against ETH. Uniswap v2 greatly increased the protocol's flexibility and allowed for a broader range of trades. It is open source and licensed under GPL.

The pages here contain conceptual and technical documentation of the Uniswap v2 protocol. If you are new to Uniswap, you might want to check out the Protocol overview first. You can also take a look at the v2 Protocol Whitepaper .

All v2 pools have fixed 0.3% fees. For more options, provide liquidity on v4.

What Is Uniswap (V2)? Uniswap is a decentralized exchange (DEX) which first introduced the automated market maker (AMM) model. Unlike with an order book, traders are provided with constant liquidity thanks to the “constant product” formula.

Swap or provide liquidity on the Uniswap Protocol.