Hyf1Hook

EthereumRegistered

A swap tax hook that collects a 4% fee on all non-excluded swaps by intercepting the input token via beforeSwapReturnsDelta and forwarding it to a configurable fee sink. The owner can pause trading globally and exclude specific addresses from taxation.

0x1bff82d7d532b3ba508f9df25fe759aa59554088 First pool 2 Jun 2026View on explorer

ALooks safeRegistered, verified, immutable

Pools

Dynamic-fee pools

Last new pool

5mo

Code size

2,995 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.

!Has an adminowner() is 0xec6f…1f14. That account can usually change fees, limits or allowlists after you trade.

✓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: Hyf1Hook).

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

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

?No audit linkedAutomated checks only.

Pools using this hook

1 total

PairCreatedFeePool ID

ETH / hyf1 5mo 0.30% 0x0ddf…a380 Tx ↗