Today, Uniswap v4 is live across 12 chains. With more deployments on the horizon, the Uniswap Foundation is accelerating DeFi innovation across ecosystems, alongside our growing builder community.
The launch of Uniswap v4 represents a key milestone in the evolution of DeFi. At the heart of v4 are hooks: modular plugins that allow developers to build custom logic for pools, swaps, fees, and LP positions.
For chains, v4 offers a pathway to supercharge the growth of their DeFi ecosystems and support their developer communities. For protocol teams, v4 enables a way to improve user experience, and to differentiate themselves. And for developers, v4 provides a platform to build powerful new DeFi applications.
In 2024, Uniswap Foundation grants and programs onboarded over 800 builders to v4, and drove the development of more than 150 new hooks. This is only the beginning. In the coming months, we’re excited to expand our support, tooling, and programming to help developers push the boundaries of DeFi.
Advancing DeFi for all communities
As of today, Uniswap v4 is available on Ethereum, Arbitrum, Avalanche, Base, Blast, BNB Chain, Ink, OP Mainnet, Polygon, Soneium, World Chain, and Zora. And over the next weeks, we’re excited to see v4 expand to even more chains.*
Our top priority is to support the growth and development of each chain’s DeFi ecosystem by building a robust network of v4 hooks. In service of this mission, we have already started collaborating with many of these chains, and are inspired to continue this work with them.
Specifically, we plan to fund a set of production-grade, open source hooks to further support the growth of DeFi on v4. These hook implementations will be:
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Open source & accessible to any chain, team, or developer to bring new DeFi use cases to life
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Production-ready and audited, ready to be deployed as-is or tailored to your specific use case
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Varied to support a wide array of use cases on any chain’s DeFi protocols and users
We look forward to working closely with talented DeFi engineers across ecosystems to build out these hooks. To get the ball rolling, our focus will start with the following:
Dynamic Fee Hook: Automatically adjusts swap fees based on market conditions to optimize fee generation and liquidity utilization. This hook can be made customizable to specific asset pairs and types as well.
Rehypothecation Hook: Allows LP positions outside of the active tick to be deposited into lending protocols to earn yield until the liquidity is needed for a swap.
Custom Curve Hook: Allows LPs to implement custom price curves to optimize pricing for specific assets.
Asynchronous Swap Hook: Ability to enforce temporal and/or other constraints to fill swaps (i.e., application specific sequencing, coincidence of wants, etc).
MEV-Mitigating Hooks: Hooks that tackle MEV (Maximal Extractable Value) with template strategies to prevent different forms including front and backrunning, sandwiches, JIT, and more to improve execution for users.
Reward Aggregator: Distributes incentives to liquidity providers based on pool activity, boosting participation in targeted pools.
Liquidations Hook: A customizable hook designed to efficiently and safely handle liquidations.
Auto-Position Rebalancing Hook: Automates the rebalancing of liquidity positions to optimize capital efficiency for LPs.
Oracle Hooks: Enable custom or novel price feeds by recording data (e.g. Time-Weighted Average Price) for integration with other DeFi protocols.
Permissioned Pool Hook: Enable compliant-hooks for institutions by allowing for arbitrary rules and logic to affect pool behavior, such as restricting pool access to participants based on KYC or geolocation status.
Auto-Hedging Hook: Protects liquidity providers from impermanent loss through automated hedging strategies.
Time-Weighted Average Market Maker (TWAMM) Hook: Facilitates large trades over time, minimizing price impact and attracting larger retail and institutional liquidity.
Start building on v4
Hooks provide a powerful platform for developers and protocol teams to explore and innovate novel DeFi applications. Today, we’re excited to invite the broader DeFi community to begin building on v4. To learn more, check out the developer resources below.
Developer Resources:
Reference Library
Community Resources
Developer Programs, Grants and Bounties
Developer Support
*Deployment of Uniswap v4 is subject to its Business Source License, similar to Uniswap v3. As with v3, additional use grants may be granted through the Uniswap governance process. The Uniswap Foundation is currently working on a recommendation for a streamlined community-led chain expansion process with the Uniswap Accountability Committee. We will share more in the coming weeks.
Uniswap Protocol v4 enables a potentially infinite variety of project development via hook deployment, and any of those projects might touch on different areas of laws or regulations in different forums. Uniswap Foundation encourages compliance with all applicable laws and regulations, and it is incumbent on builders to consult with legal counsel as appropriate to determine the legal requirements and restrictions (if any) for their projects.