Uniswap aggregator hooks bring external liquidity to Ethereum, Base and Robinhood Chain

Uniswap routes trades beyond its own pools

Uniswap Labs has launched aggregator hooks on Ethereum, Base and Robinhood Chain. The feature allows Uniswap v4 (a version of its decentralized exchange, or DEX, where trades happen directly between users without a central company) to route trades through liquidity held on external platforms.

At launch, Fluid, Curve and PancakeSwap are among the external sources available. Trades can go through the Uniswap web app and API for those three chains, while support for more blockchains is planned.

How the new hooks work

• Wrapping external liquidity: Aggregator hooks make liquidity on other platforms look like a Uniswap v4 pool, allowing Uniswap to compare prices across its own pools and outside sources in one transaction.


• Gradual rollout: The first aggregator hook went live in March 2026 on Tempo (a payments-focused blockchain), but only through the web app. Ethereum, Base and Robinhood Chain are now supported through both the web app and API.


• Built from a known plan: The launch follows Uniswap's UNIfication proposal from November 2025, which described turning v4 into an aggregator.

Fees go toward UNI burns

Trades routed through external liquidity sources will pay Uniswap protocol fees. Those fees will contribute to burns of the UNI token (the native token used by the Uniswap protocol).

Uniswap Labs said the protocol has processed more than $4.5 trillion in total trading volume, and that aggregator hooks are designed to bring liquidity from elsewhere into v4 even if most liquidity already exists on Uniswap.

Sources

• The Block

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