Uniswap Expands v4 Trading to External Liquidity on Ethereum, Base and Robinhood Chain

Uniswap Labs has expanded its aggregator hooks to Ethereum, Base and Robinhood Chain, allowing Uniswap v4 to access liquidity from external platforms and give traders more options when swapping tokens.

Announced Thursday, the update connects Uniswap with third-party liquidity sources, including Fluid, Curve and PancakeSwap. The feature is available through the Uniswap web app and API on all three networks, with additional blockchain integrations planned.

The rollout follows the first aggregator hook launch on Tempo in March 2026. Tempo, a payments-focused blockchain developed by Stripe and Paradigm, currently supports the feature through the Uniswap web app rather than its API.

Uniswap first outlined the concept in its UNIfication proposal in November 2025, describing the plan as a way to turn v4 into a trading aggregator that can access liquidity beyond its own pools.

Uniswap v4 Connects to External Liquidity

Uniswap v4 includes a feature called hooks, which allows developers to add custom rules and functions to liquidity pools. Aggregator hooks build on this system by connecting external trading venues to Uniswap's routing process.

Each hook makes an external liquidity source appear like a Uniswap v4 pool to the trading router. The system can then compare prices across Uniswap's own pools and supported third-party platforms before selecting a route for a swap.

By combining these sources within a single transaction, Uniswap aims to improve access to available liquidity without requiring users to search across different platforms manually.

The hooks are included automatically when users swap tokens through the Uniswap web app. Developers integrating the Uniswap API can also use the feature to route trades through supported external sources.

Uniswap Labs said the integration is designed to address the fact that liquidity can develop across multiple platforms, even though a large share of onchain trading liquidity is already available through Uniswap.

Trading Fees Will Support UNI Burns

The expansion also introduces protocol fees on trades routed through external liquidity sources. According to Uniswap Labs, these fees will contribute to burns of UNI, the protocol's native token.

Token burns permanently remove tokens from circulation, reducing the overall supply over time. The effect on UNI's supply will depend on the amount of trading activity routed through the new integrations and the fees collected.

Uniswap Labs said the protocol has processed more than $4.5 trillion in cumulative trading volume. By bringing additional liquidity sources into v4, the company aims to make more trading opportunities available through its existing interface and infrastructure.

The latest rollout extends that strategy across three major blockchain networks, while planned support for additional chains could further expand the range of liquidity available to Uniswap traders.