Runs code on every swap. Can take tokens from swaps. Can block LP withdrawals. Gates who can add liquidity. Runs at pool creation. Handles donations to LPs.
0x403f91d1c416fd804235f89af9d94b49cf129afcFirst pool 20 Oct 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
17d
Code size
23,945 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.
Can block LP withdrawals
It runs before liquidity is removed, so it can delay or refuse LP exits.
Gates who can add liquidity
It checks every deposit before it goes in.
Runs at pool creation
It runs when a pool is created, often to lock in that pool’s settings.
Handles donations to LPs
It runs when someone donates tokens to the pool’s LPs.
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 registryUnregistered hooks get less scrutiny. Most scam hooks are unregistered.
!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.