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EVENT / TOPICHistorical

Uniswap Labs Launches Aggregator Hooks and TJAR Tool for Cross-Chain Liquidity Routing

3 reports2 sources10/31/2026 updated

Current overview (not historical)

AI overview

Uniswap Labs released Aggregator Hooks, enabling Uniswap v4 to route transactions via external liquidity held on other platforms across multiple chains, including Ethereum, Base, and Robinhood Chain. Subsequently, the lab launched the TJAR tool, opening the Token Jar fee conversion system to third-party applications, with Robinhood as the first partner. Uniswap claims coverage of over 90% of on-chain DEX activity and integration of seven external liquidity sources, including Curve and Fluid, via wrapper pools. The TJAR tool aims to help applications optimize user trading experiences by converting token fees.

Written with AI from the reporting · updated 11/2/2026

Latest developmentOct 31, 22:30
Uniswap v4 launches Aggregator Hooks to capture external liquidity fees, edging toward Jupiter's model
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Story route

A station-by-station route from the first public evidence onward; every station carries its own evidence and uncertainty.

  1. 1Unclassified fact stationOct 22, 00:00recorded Oct 22, 22:07

    Uniswap aggregator hooks go live on Ethereum Base and Robinh

    Read original source ↗ The BlockReplay this moment in the explorer
    Evidence & revisions · 2 source records
    Subject：
    Uniswap Labs
    Action：
    launched aggregator hooks
    Object：
    Uniswap v4 to route trades through liquidity held on external platforms
    Occurred (fact side)：
    Oct 22, 00:00
    The Block ↗Report pageOriginal / first version
    Published (valid side)：
    Oct 22, 21:55
    First seen (known side)：
    Oct 22, 22:07
    PANews · Articles ↗Report pageOriginal / first version
    Published (valid side)：
    Oct 31, 22:30
    First seen (known side)：
    Nov 2, 12:55
    Fact station

    Copy may have been revised later; time replay is bounded. Layer labels group reading only, not causation between layers.

  2. 2Unclassified fact stationOct 29, 00:00recorded Oct 29, 23:14single source

    Uniswap Labs 开放 TJAR 给 Robinhood

    Read original source ↗ The BlockReplay this moment in the explorer
    Evidence & revisions · 1 source records
    Subject：
    uniswap-labs
    Action：
    开放 Token Jar fee conversion system
    Object：
    Robinhood
    Occurred (fact side)：
    Oct 29, 00:00
    The Block ↗Report pageOriginal / first version
    Published (valid side)：
    Oct 29, 22:34
    First seen (known side)：
    Oct 29, 23:14
    Fact stationSingle source · one-sided claim

    Copy may have been revised later; time replay is bounded. Layer labels group reading only, not causation between layers.

Uncertainty marks flag where to check the sources; they are not proven causation.

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Oct 31
  1. PANews · Articles
    Uniswap v4 launches Aggregator Hooks to capture external liquidity fees, edging toward Jupiter's model

    Report first recorded Nov 2, 12:55

    Uniswap v4 has launched Aggregator Hooks, wrapping external liquidity sources such as Curve and PancakeSwap into standard v4 pools across Ethereum, Base and Robinhood Chain. The feature automatically routes users to the optimal path between native and wrapped pools without manual approval. While Uniswap claims coverage of over 90% of on-chain DEX activity, data from the launch week shows only 88,101 transactions totaling $2.85 billion, with 85% originating from Sky's LitePSM and generating just $2,059 in fees for Uniswap. The protocol's ability to enhance UNI value capture depends on whether it can activate fee mechanisms on high-volume external pools.

    Read original source ↗
Oct 29
  1. The BlockRelated fact: single source
    Uniswap Labs launches TJAR tool to expand token fee conversion to third-party apps

    Report first recorded Oct 29, 23:14

    Uniswap Labs has opened its Token Jar fee conversion system to third-party applications via a new tool called TJAR. Robinhood is the first app to integrate the tool.

    Read original source ↗
Oct 22
  1. The Block
    Uniswap Labs launches aggregator hooks enabling Uniswap v4 to route trades via external liquidity

    Report first recorded Oct 22, 22:07

    Uniswap Labs has launched aggregator hooks, which allow Uniswap v4 to route trades through liquidity held on external platforms. This feature extends Uniswap v4's trading routing capabilities across multiple chains, including Ethereum, Base, and Robinhood Chain.

    Read original source ↗

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