DEX Aggregator
A DEX aggregator is a protocol or service that sources liquidity from multiple decentralized exchanges and routes a user’s trade across the best available pools or paths to achieve optimal price and minimal slippage.
✦ Key Insight
Delivers better execution than any single DEX, especially for larger trades or illiquid pairs. Saves traders money on price impact and discovers hidden liquidity.
✕ Common Misconceptions
Ignoring aggregator fees or gas overhead; using outdated interfaces; not setting appropriate slippage tolerance for the routed path.
Detailed Explanation
How It Works: Off-chain or on-chain solvers scan pools, compute optimal split routes (considering gas), and execute a single atomic transaction that may touch several DEXs. Popular examples include 1inch, Matcha, or Jupiter.
FAQs:
Does it hold my funds?
No, non-custodial.
Always better price?
Usually, after gas and fees.
Multi-chain?
Many now support cross-chain routing.
In Practice
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Liquidity
Ease of buying/selling an asset without significantly moving its price (high liquidity = tight bid-ask spreads and fast fills).
Slippage
Slippage is the difference between the expected price of a trade at the time of submission and the actual executed price, caused by market movement or insufficient liquidity during confirmation.
Decentralised Exchange
A decentralised exchange (DEX) is a peer-to-peer trading platform built on smart contracts that allows users to swap cryptocurrencies directly from their own wallets without a central intermediary holding funds or requiring accounts.
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