UniHooks

PenguinHook

Robinhood

Runs code on every swap. Can take tokens from swaps. Runs at pool creation.

0x19b4517ded421d738051545e6c5d461ef13460cc First pool 21 Sept 2026View on explorer
CBe carefulNot in Uniswap’s hook registry · Can take tokens out of swaps
Pools
18
Dynamic-fee pools
0
Last new pool
28d
Code size
4,393 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).
!Not in Uniswap’s hook registryUnregistered hooks get less scrutiny. Most scam hooks are unregistered.
✓Source code publishedThe code on the block explorer matches what's deployed (contract: PenguinHook).
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

18 total
PairCreatedFeePool ID
ETH / $DIFF 28d 0.00% 0x97bf…0f21 Tx ↗
ETH / FPRE 37d 0.00% 0x58f6…ce93 Tx ↗
ETH / FINAL 37d 0.00% 0x89b4…8a03 Tx ↗
ETH / PADDLE 38d 0.00% 0x36e1…e934 Tx ↗
ETH / TRNCHP 38d 0.00% 0x065f…f0c7 Tx ↗
ETH / FINAL 39d 0.00% 0x98d3…8b9c Tx ↗
ETH / HELLO2 39d 0.00% 0x7745…a8ef Tx ↗
ETH / HELLO 39d 0.00% 0x17ef…b1d9 Tx ↗
ETH / 0x9cbd…09fb 39d 0.00% 0x655e…f891 Tx ↗
ETH / 0xe1dc…8777 39d 0.00% 0xcc66…5cb7 Tx ↗
ETH / 0x1d45…5be3 40d 0.00% 0x7774…fa53 Tx ↗
ETH / 0xa9dd…e2ca 40d 0.00% 0x7a89…9c32 Tx ↗
ETH / 0xebb5…c519 41d 0.00% 0xcb9b…16ba Tx ↗
ETH / 0xa451…d7b5 41d 0.00% 0x172d…1a31 Tx ↗
ETH / 0x1028…3d57 41d 0.00% 0x2c43…1220 Tx ↗
ETH / 0x400b…d539 42d 0.00% 0x0f09…3438 Tx ↗
ETH / 0x1aaa…0e09 42d 0.00% 0xb52d…4131 Tx ↗
ETH / 0xb398…d3a0 46d 0.00% 0x1a6e…62f0 Tx ↗