V4FunFeeHook

RobinhoodRegistered

Volatility-based dynamic fee hook for ETH-native pools, charging 1–7% fees in ETH on buys (via beforeSwap delta) and sells (via afterSwap delta), sent directly to a per-pool fee recipient. Only exact-input swaps are allowed; pool initialization is restricted to a single registered factory address.

0x1cdca854e9c01e6589f4ea7ad87771dcf23620cc First pool 28 Aug 2026View on explorer

ALooks safeRegistered, verified, immutable

1 identical copies

Pools

Dynamic-fee pools

Last new pool

2mo

Code size

5,832 B

What it can do

Runs code on every swap

Its code executes inside each trade in pools that use it.

Can take tokens from swaps

It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.

Runs at pool creation

It runs when a pool is created, often to lock in that pool’s settings.

Safety report

Automated checks, not an audit

✓Not upgradeableNo proxy pattern found: the code is fixed.

✓No owner foundNo owner() function: nobody has an admin switch (as far as the standard check goes).

✓Listed in Uniswap’s hook registryRegistered with Uniswap Labs (a listing, not a security review).

✓Source code publishedThe code on the block explorer matches what's deployed (contract: V4FunFeeHook).

iCan change swap amountsIt has a ReturnDelta permission. Normal for fees and burns, but also how fake-quote hooks steal.

iRestricted swapsSwap access: other. Not everyone can trade every pool.

?No audit linkedAutomated checks only.

Pools using this hook

4 total

PairCreatedFeePool ID

ETH / PDEX 2mo 0.00% 0x18bb…6f30 Tx ↗

ETH / BROKERTOOLS 2mo 0.00% 0x716d…57d6 Tx ↗

ETH / BROKERTOOLS 2mo 0.00% 0x1d47…a831 Tx ↗

ETH / MELO 2mo 0.00% 0x2436…47de Tx ↗