AntiMevTaxHook

Robinhood

AntiMevTaxHook is a Uniswap v4 hook on Robinhood Chain. Runs code on every swap. Can take tokens from swaps. Gates who can add liquidity.

Contract name: AntiMevTaxHook

0x4b3321b6617c927023d849521ce7b7c5f2dd4844 First pool 10 Nov 2026View on explorer

Launch a pool with this hook

CBe carefulNot in Uniswap’s hook registry · Has an admin who can change it · Can take tokens out of swaps?

Pools

Last new pool

48m

Code size

4,183 B

How this hook works

Custom hook

A custom hook. It pays extra to liquidity providers and controls who adds liquidity.

Pays extra to liquidity providers

It sends extra rewards straight into the pool for liquidity providers.

The code that does this (handleAfterSwap):

function _handleAfterSwap(
    address sender,
    PoolKey calldata key,
    SwapParams calldata params,
    BalanceDelta delta
) private returns (bytes4, int128) {
    (uint256 amountOut, uint256 tax) = _recordAndMeasureTax(key, params, delta);
    if (tax == 0) return (IHooks.afterSwap.selector, 0);

    // donate debits this hook and the returned delta credits it back, so the
    // tax ends up in feeGrowthGlobal and the hook's own balance stays zero.
    bool donated;
    try manager.donate(key, params.zeroForOne ? 0 : tax, params.zeroForOne ? tax : 0, "") returns (BalanceDelta) {
        donated = true;
    } catch {}
    if (!donated) return (IHooks.afterSwap.selector, 0);
    emit MevTaxDonated(PoolId.unwrap(key.toId()), sender, params.zeroForOne, amountOut, tax);
    return (IHooks.afterSwap.selector, int128(uint128(tax)));
}

Rules for adding liquidity

It decides who can add liquidity, or when.

The code that does this (beforeAddLiquidity):

function beforeAddLiquidity(address sender, PoolKey calldata, ModifyLiquidityParams calldata, bytes calldata)
    external
    view
    onlyManager
    returns (bytes4)
{
    if (!liquidityAdder[tx.origin]) revert NotLiquidityOrigin(sender, tx.origin);
    return IHooks.beforeAddLiquidity.selector;
}

Who controls it: The code itself can’t be changed. The hook developer can change: liquidity adder. The manager can call: after swap.

Based on the hook’s published code.

Safety report

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

5 to review3 passed1 info1 unknown

Contract1 to review

!The hook developer has an admin keyIts owner wallet is 0x22ba…c034. 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: AntiMevTaxHook).

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 change swap amountsIt has return-delta permissions, so it can take or add tokens in every trade (taxes, fees, burns, custom curves). Check where that value goes and who controls it.

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

✓Won’t reject swapsNo beforeSwap, so trades always reach the pool’s curve.

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.

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.

Gates who can add liquidity

It checks every deposit before it goes in.

Hook history

Nothing recorded yet.

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.

Pools

1 total

PairCreatedTrades · 7dPool ID

ETH / BIRD 48m 1 trades · 7d 0x1ee0…c9d5 Tx ↗