Uniswap V2 protocol
Overview
Uniswap V2 is the second generation of the Uniswap automated market maker protocol, and the version that made direct ERC20-to-ERC20 pairs possible rather than routing everything through ETH. It charges a 0.30% fee on swaps, which accrues to liquidity providers in the pool. V2 introduced two features that became DeFi standards: flash swaps, which let a caller withdraw tokens from a pool and pay for them within the same transaction, and built-in time-weighted price oracles that other contracts can read. Architecturally it splits into core contracts, which hold the fundamental pool logic and custody of assets, and periphery contracts, which provide safer user-facing routing on top — a separation that keeps the security-critical surface small while allowing flexibility above it. Uniswap itself was created by Hayden Adams, who deployed the first version on Ethereum on 2 November 2018; the protocol is governed by UNI token holders, and V2 remains documented, audited and covered by an active bug bounty programme on Cantina. Uniswap launched in November 2018 as V1. V2 followed with ERC20/ERC20 pairs, flash swaps and price oracles, and remains deployed and supported alongside later versions, with completed audits and an ongoing bug bounty on Cantina. Governance of the protocol passed to UNI token holders after the token's 2020 launch.
Within the DeFi Intel graph, Uniswap V2 connects to 27 tracked entities, most strongly to Ethereum, Arbitrum, Base.
Relations
Top connections in the DeFi Intel knowledge graph (confidence-weighted, 10 of 27 total).
| Relation | Connected entity | Confidence |
|---|---|---|
deployed_on | Ethereum | 95% |
deployed_on | Arbitrum | 95% |
deployed_on | Base | 95% |
deployed_on | Polygon | 95% |
deployed_on | Optimism | 95% |
deployed_on | Avalanche | 95% |
deployed_on | Binance | 95% |
deployed_on | Monad | 95% |
deployed_on | Celo | 95% |
deployed_on | Unichain | 95% |
More on Uniswap V2
- Uniswap V2 Review 2026 — Legacy AMM, Meme Token Liquidity
- Is Uniswap V2 Safe in 2026? Audits, Hacks, Risk Score
Frequently asked questions
What is Uniswap V2?
Uniswap V2 is a dexs tracked in the DeFi Intel knowledge graph. It is connected to 27 other tracked entities, most strongly to Ethereum, Arbitrum, Base.
What type of entity is Uniswap V2?
Uniswap V2 is classified as a dexs (protocol) in the DeFi Intel knowledge graph.
What is Uniswap V2 connected to?
In the DeFi Intel knowledge graph, Uniswap V2 is linked to 27 other tracked entities, most strongly to Ethereum, Arbitrum, Base.
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