TokenFeeHook

Ethereum

TokenFeeHook is a Uniswap v4 hook on Ethereum. Runs code on every swap. Sets its own swap fee. Gates who can add liquidity.

Contract name: TokenFeeHook

0x6f8a1596c2d0e024eca1a36952fc320520bfc880 First pool 9 Nov 2026View on explorer

Launch a pool with this hook

BProbably fineNot in Uniswap’s hook registry · Has an admin who can change it?

Pools

Last new pool

44m

Code size

3,228 B

How this hook works

Dynamic fee

A dynamic fee hook. It sets its own trading fee and controls who adds or removes liquidity.

Sets its own trading fee

Instead of a fixed fee chosen by the pool creator, it decides the fee itself on each trade.

The code that does this (beforeSwap):

function _beforeSwap(address, PoolKey calldata key, SwapParams calldata params, bytes calldata)
    internal
    view
    override
    returns (bytes4, BeforeSwapDelta, uint24)
{
    uint24 fee = feeFor(key, params.zeroForOne);
    return (
        BaseHook.beforeSwap.selector,
        BeforeSwapDeltaLibrary.ZERO_DELTA,
        fee | LPFeeLibrary.OVERRIDE_FEE_FLAG
    );
}

Rules for adding or removing liquidity

It decides who can add or remove liquidity, or when.

The code that does this (beforeAddLiquidity):

function _beforeAddLiquidity(address sender, PoolKey calldata, ModifyLiquidityParams calldata, bytes calldata)
    internal
    view
    override
    returns (bytes4)
{
    require(sender == factory, "only factory");
    return BaseHook.beforeAddLiquidity.selector;
}

Who controls it: No admin functions: nobody can change its rules after deployment.

Based on the hook’s published code.

Hook history

Fees set 1 time
Latest transactions
- 0xc2ccf512…9d109d block 26,376,881 · 1.00e-16 USAT
See every one on the explorer ↗

Counted from what the hook recorded on-chain across all its pools, for every action in its published code, plus token transfers in and out of it.

What it can do

Runs code on every swap

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

Sets its own swap fee

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

Gates who can add liquidity

It checks every deposit before it goes in.

Safety report

Before you build on it. Automated checks, not an audit

5 to review3 passed2 info1 unknown

Contract1 to review

!The hook developer has an admin keyIts owner wallet is 0x35c6…73d3. That wallet can usually change fees, limits or allowlists after traders have bought in.

✓Code is fixedNo proxy, so the code that runs today is the code that runs tomorrow.

✓Source code publishedThe code on the block explorer matches what's deployed (contract: TokenFeeHook).

Pools2 to review

!Pools don’t trade in Uniswap’s app yetIt 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.

!Can reject swapsIt runs on every trade and can block it. Used for things like launch limits and start times.

iControls the swap fee1 of its pools use a dynamic fee the hook sets per trade, so LP income depends on its logic.

iControls who can add liquiditybeforeAddLiquidity checks every deposit, so outside LPs may be blocked.

✓Doesn’t touch swap amountsTraders get exactly what the pool’s curve and fee give.

Track record2 to review

!Not in Uniswap’s hook registryNot listed by Uniswap Labs, so nobody outside the hook developer has looked at it. Most abandoned and malicious hooks are unlisted.

!Brand newIts first pool was created less than a day ago, so it has no track record. Prefer proven hooks for a real launch.

?No audit linkedNothing in the registry. Ask the hook developer for one or review the source yourself.

Pools

1 total, newest first

PairCreatedFeePool ID

ETH / USAT 44m dynamic 0x2e1c…a1c1 Tx ↗