VolatilityFeeHook

RobinhoodRegistered

Charges a realized-volatility fee on every swap, ranging from a base rate to a ceiling proportional to how far the previous swap moved the tick price. Fees are taken in the pool's quote currency as ERC-6909 claims and forwarded to an immutable fee wallet via a permissionless sweep() function. Exact-output swaps are rejected.

0x547b18b40269c228da91b82747d826b4f99c00cc First pool 21 Aug 2026View on explorer

ALooks safeRegistered, verified, immutable

Pools

Dynamic-fee pools

Last new pool

55d

Code size

5,075 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.

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.

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

?No audit linkedAutomated checks only.

Pools using this hook

4 total

PairCreatedFeePool ID

USDG / BRAIN 55d 5.00% 0xa7a2…35aa Tx ↗

USDG / BRAIN 55d 0.90% 0x6f6e…d61a Tx ↗

WETH / TEST 2mo 0.00% 0x8b71…5104 Tx ↗

WETH / GTA 2mo 0.00% 0xd0bc…0789 Tx ↗