PumpFeeHook

RobinhoodRegistered

A Uniswap v4 hook for token launches that charges tiered creator and protocol fees on swaps based on the token's market cap, and overrides LP fees dynamically per tier. Fees are taken from the input currency in beforeSwap (exactInput) or afterSwap (exactOutput) and held for distribution via skim().

0xa96b567621847ca467976ad2bb8a54eefa63d0cc First pool 15 Jul 2026View on explorer

ALooks safeRegistered, verified, immutable

Pools

Dynamic-fee pools

Last new pool

3mo

Code size

7,877 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.

Sets its own swap fee

Pools using it let the hook choose the swap fee instead of a fixed tier.

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).

✓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: PumpFeeHook).

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

ETH / IMFX 3mo dynamic 0xeae9…aa0e Tx ↗

ETH / IMF 3mo dynamic 0x8510…ea2f Tx ↗

ETH / BACK 3mo dynamic 0xed91…fb86 Tx ↗

ETH / OVER 3mo dynamic 0x28c1…d845 Tx ↗