Launchpad hook on Robinhood Chain

Uniswap v4 Hook Contract 0xfae5490a837878703bb15a4cacc264d28c4b20cc on Robinhood Chain · Launchpad

Volume (24h)
$88
Value locked (TVL)
$0.05
All-time volume
$88
Pools using this hook
1
Swaps (24h)
4 (2 traders)
Total swaps
4

What it does

This hook is a launch token that takes a toll on swaps in its pool and lets its owner withdraw the collected amounts; the exact toll formula and which trade direction pays more could not be confirmed from the decoded bytecode.

How it works step by step

  • Is an ERC20 token that is itself a Uniswap v4 hook, with ownable admin functions and a launcher address stored in slot 7
  • Enables beforeInitialize, beforeSwap, afterSwap, beforeSwapReturnDelta and afterSwapReturnDelta, so it can take a cut of swaps via return deltas
  • beforeSwap and afterSwap read and write a counter-style storage state (slots 8 to 0x11) and use tollBps and creditBps parameters, indicating a toll or tax taken on trades
  • Has a self-unlock flow: unlockCallback and take(address,address,uint256) selectors are present, so the hook calls the PoolManager to move currency into its own balance
  • Exposes drain(uint8,uint256) to withdraw accumulated tolls, with tollCollected, tollPaidOut and keeperOf views tracking accounting
  • Exposes SUPPLY, totalSupply, balanceOf and metadataURI, consistent with a token-based launch where the hook token is paired with a pool
Swap behaviour
beforeSwap and afterSwap are both enabled with return-delta permissions, so the hook can alter the amount a swap receives or pays by taking a toll. Exact direction and rate depend on tollBps and creditBps, whose logic cannot be fully confirmed from decoded bytecode alone.
Liquidity behaviour
beforeAddLiquidity, afterAddLiquidity, beforeRemoveLiquidity and afterRemoveLiquidity selectors exist as views, but the hook does not enable the corresponding permissions in its address, so liquidity callbacks are not invoked by the PoolManager.
Fee behaviour
Fees are not set by the hook through a dynamic fee callback; the pool's static fee applies. Revenue to the hook comes from a toll mechanism via return deltas on swaps, tracked in tollCollected and paid out via drain.
Owner & admin controls
Owner (Ownable) can transfer or renounce ownership. drain(uint8,uint256) is callable to withdraw collected tolls, gated by keeper/owner logic whose exact restriction is not confirmed from decoded bytecode. Parameters such as tollBps and creditBps are readable; whether they are mutable by the owner could not be confirmed.

Enabled Uniswap v4 callbacks

beforeInitialize, beforeSwap, afterSwap, beforeSwapReturnDelta, afterSwapReturnDelta

beforeInitialize records the pool id and initial state; beforeSwap computes and applies the toll using return deltas; afterSwap updates accounting state and can settle a return delta; beforeSwapReturnDelta and afterSwapReturnDelta allow the hook to take currency from swaps.

Security & trust assessment

Risk level: high, estimated (decoded bytecode, medium confidence).

Who controls it: The owner or keeper of the hook can drain collected toll balances and may control toll parameters; a compromised privileged key could withdraw all accumulated tolls.

Risk to user funds: Swappers on the pool pay or receive a toll through return deltas, and the hook holds accumulated toll balances that can be withdrawn through drain; funds in the pool itself are subject to the toll logic applied on every swap.

Security findings

  • [high] Hook takes currency via return deltas: beforeSwapReturnDelta and afterSwapReturnDelta are enabled and the bytecode contains take and unlock selectors, so the hook can skim tokens from every swap on its pool.
  • [medium] Owner-controlled withdrawal of collected tolls: drain(uint8,uint256) lets a privileged caller move accumulated toll balances; access control on drain could not be verified without source.
  • [low] Admin ownership can be transferred or renounced: Ownable functions transferOwnership and renounceOwnership are present, so control of the toll and drain logic can change hands.
  • [medium] Unverified source: No verified source is available, so the exact toll formula, bounds on tollBps and creditBps, and whether parameters can be changed after deployment remain unconfirmed.

Contract details

Verified source
No
Bytecode size
7,295 bytes
Upgradeable proxy
No
Detected patterns
erc20, launchpad, moves-currency, ownable, return-delta, self-unlock, tax

Pools using Launchpad hook