This is a Uniswap v4 hook on Base. Runs code on every swap. Can take tokens from swaps.
0xa557e77443da643c7afef58e11e0c5c915aec044First pool 26 Mar 2026·View on explorer
CBe carefulNot in Uniswap’s hook registry · Source code not published · Can take tokens out of swaps
Pools
1
Dynamic-fee pools
0
Last new pool
7mo
Code size
11,396 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).
!Not in Uniswap’s hook registry, not tradeable in Uniswap’s app yetUnregistered hooks get less scrutiny. Most scam hooks are unregistered. It runs code on swaps, so Uniswap’s app only routes it once Uniswap Labs approves it, and it isn’t approved yet. Adding liquidity still works, and other apps can trade it.RegistryRouting rules
!Source code not publishedNobody can read what this hook actually does. Treat it as a black box.
iCan change swap amountsIt has a ReturnDelta permission. Normal for fees and burns, but also how fake-quote hooks steal.