HookManager on Robinhood Chain

Volume (24h)

$0

Value locked (TVL)

$0

All-time volume

$0

Pools using this hook

1

Swaps (24h)

2 (1 traders)

Total swaps

2

What it does

Gemoon launchpad hook that charges every swap a pair-token fee of 1%-5%, with early snipers in the first 30 seconds paying up to 80%, and sends all fees to a vault shared by protocol, creator and stakers while LPs withdraw freely.

How it works step by step

• Gemoon launchpad hook for Meme/pair-token pools with a 0% LP fee; the hook charges the entire swap fee in the pair token.
• Base fee per Meme is set once by the creator at launch, between 1% and 5% (fallback fee fixed at deployment if never set).
• Anti-snipe: fee starts at 80% when the first pool is created and falls linearly to the base fee over 30 seconds.
• All fees are sent to a vault after each swap, which splits them between protocol, creator and stakers.
• Anyone can call a manual distribute function to push accrued fees to the vault if automatic payouts fail.

Swap behaviour

Every buy and sell pays a fee in the pair token, taken from the input or output depending on swap direction; it is 80% at launch, decaying to the 1%-5% base fee within 30 seconds. Swaps may revert if not given enough gas for the vault's fee conversion (capped at about 3M gas).

Liquidity behaviour

No liquidity callbacks; LPs can add and withdraw freely. Pools must pair with the pair token, use a 0 LP fee, and have a Meme registered in the vault.

Fee behaviour

Swap fee is 80% at pool creation, falling linearly to the creator-chosen base fee of 1%-5% after 30 seconds (the launch controller's dev buy always pays the base fee). All fees go to the vault, which splits them among protocol, creator and stakers.

Owner & admin controls

The owner can only change the vault address and the controller address; fee rates are fixed in code. The controller sets each Meme's base fee once, within 1%-5%, only in the launch block.

Enabled Uniswap v4 callbacks

beforeInitialize, afterInitialize, beforeSwap, afterSwap, beforeSwapReturnDelta, afterSwapReturnDelta

beforeInitialize: validates pair, zero LP fee and vault registration; afterInitialize: records launch time for anti-snipe; beforeSwap: charges fee when the pair-token amount is specified; afterSwap: charges fee on computed pair-token amount and pays out to vault; beforeSwapReturnDelta/afterSwapReturnDelta: lets the hook deduct the fee from the swap.

Security & trust assessment

Risk level: medium (verified source, high confidence).

Who controls it: The owner can change the vault and controller addresses, redirecting where future fees go, but cannot change fee rates or touch LP funds.

Risk to user funds: The hook takes only the swap fee in the pair token: 1%-5% normally, up to 80% within 30 seconds of launch. LP principal cannot be locked or drained.

Security findings

• [medium] 80% anti-snipe launch fee: For the first 30 seconds after launch, swaps pay up to 80% decaying linearly to the base fee; early buyers can lose most of their trade to fees.
• [low] Owner can redirect fee recipient: The owner can repoint the vault, which receives all fees, and the controller; it cannot change fee rates.
• [info] Fixed fee bounds, non-upgradeable: Not a proxy; base fee locked to 1%-5% per Meme and the decay curve is hard-coded.
• [info] LP withdrawals unrestricted: Remove-liquidity callbacks are disabled, so LPs can always withdraw.

Contract details

Verified source

Yes (HookManager)

Compiler

solc 0.8.26+commit.8a97fa7a

Bytecode size

8,152 bytes

Upgradeable proxy

No

Detected patterns

dynamic-fee, liquidity-management, moves-currency, ownable, return-delta, self-unlock

Pools using HookManager