Uniswap Labs said Aggregator Hooks went live Oct. 22 in its Web App and API, connecting external liquidity sources to Uniswap v4 pools across three networks.
The feature launched on Ethereum mainnet, Base and Robinhood Chain. Uniswap Labs said seven sources were available at launch and covered more than 90% of decentralized exchange activity on those networks. The aggregator layer packages outside sources so they appear as v4 pools, the company said.
Uniswap v4 launched in January 2025. In the protocol, hooks are optional code that can respond to swaps or to liquidity being added or removed. Pools with the same assets can use different hooks and apply different rules. A hook is selected when its pool is created and cannot later be changed, according to Uniswap’s developer documentation.
