Uniswap Labs has activated Aggregator Hooks in its web app and API across Ethereum, Base and Robinhood Chain. The feature allows the v4 router to compare quotes from Uniswap pools with those from seven external sources that Uniswap says represent more than 90% of decentralized-exchange activity across the supported networks. Transactions can settle in a single transaction and do not necessarily require additional token approvals solely because they include external liquidity. Swaps routed through the mechanism can also generate protocol fees that support UNI token burns, while the actual impact on volumes, spreads and costs remains to be measured in live trading.
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