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About 1inch
1inch is the leading decentralized exchange (DEX) aggregator that sources liquidity from hundreds of DEXs to find users the best possible swap rates. Founded in 2019 during an ETHGlobal hackathon by Sergej Kunz and Anton Bukov, 1inch has grown into one of the most essential tools in the DeFi ecosystem.
The protocol's Pathfinder algorithm splits trades across multiple liquidity sources, optimizing for the best exchange rates while minimizing slippage and gas costs. With Fusion mode, users can execute swaps without paying gas fees - the transaction costs are covered by resolvers who compete to fill orders at the best prices.
1inch is deployed across 12+ blockchain networks including Ethereum, Polygon, Arbitrum, Optimism, and BNB Chain, processing billions of dollars in monthly trading volume. The protocol has become the go-to aggregator for traders seeking optimal execution across the fragmented DEX landscape.
Key Features
DEX Aggregation
Sources liquidity from 400+ DEXs to find the best swap rates across the DeFi ecosystem
Fusion Mode
Gasless swaps where resolvers compete to fill your order at the best price
Limit Orders
Set target prices for trades that execute automatically when conditions are met
Multi-Chain Support
Trade on 12+ networks including Ethereum, Polygon, Arbitrum, and more
Pathfinder Algorithm
Advanced routing that splits trades across multiple DEXs for optimal execution
MEV Protection
Fusion orders are protected from sandwich attacks and other MEV exploitation
Use Cases
Optimal Token Swaps
Get the best rates for any token swap by aggregating liquidity across all major DEXs
Large Trade Execution
Split large orders across multiple sources to minimize price impact and slippage
Gasless Trading
Use Fusion mode to swap tokens without paying gas fees upfront
Limit Order Trading
Set and forget orders that execute when your target price is reached
Cross-Chain Trading
Access the same aggregation technology across multiple blockchain networks
Project Info
Frequently Asked Questions
1inch is a DEX aggregator that finds the best swap rates by searching across hundreds of decentralized exchanges. When you make a trade, 1inch's Pathfinder algorithm calculates the optimal route, potentially splitting your trade across multiple DEXs to get you more tokens than using any single exchange.
1inch has been extensively audited and has processed billions in trading volume without major security incidents. The protocol is non-custodial - you're always trading directly from your wallet. However, always verify you're using the official 1inch interface and be cautious of scam tokens.
Fusion is 1inch's gasless trading mode where professional market makers called 'resolvers' compete to fill your order. You sign a message (free) instead of paying gas, and resolvers pay the transaction costs. You often get better rates because resolvers can optimize execution.
1inch doesn't charge swap fees on most trades. You only pay network gas fees (or nothing in Fusion mode). The platform earns from positive slippage on some trades and from its partnership with liquidity sources. There's a small fee on limit orders when they execute.
1inch often provides better rates than Uniswap alone because it can route your trade through multiple DEXs. For large trades especially, 1inch's splitting can significantly reduce slippage. However, for very small trades on popular pairs, direct DEX trading might be cheaper due to gas optimization.