Counter

ArbitrumRegistered

A minimal reference hook that increments per-pool counters on beforeSwap, afterSwap, beforeAddLiquidity, and beforeRemoveLiquidity. Implements no access control, fee logic, or token transfers — pure observation.

0x613f49b3e1b3c770494fe9acd45f2918c9680ac0 First pool 22 May 2026View on explorer

ALooks safeRegistered, verified, immutable

1 identical copies

Pools

Dynamic-fee pools

Last new pool

5mo

Code size

6,586 B

What it can do

Runs code on every swap

Its code executes inside each trade in pools that use it.

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.

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: Counter).

?No audit linkedAutomated checks only.

Pools using this hook

1 total

PairCreatedFeePool ID

ETH / v4test 5mo 0.30% 0x3677…8f50 Tx ↗