SlurpV4Hook on Base

Uniswap v4 Hook Contract 0x7494b7f3cd35d95e562505ebb086af91b00228cc on Base · Launchpad · Verified contract

Volume (24h)
$0
Value locked (TVL)
$0.17
All-time volume
$3.26K
Pools using this hook
24
Swaps (24h)
0 (0 traders)
Total swaps
54

What it does

Slurp launchpad hook that charges buyers and sellers a fixed 1% to 5% fee in the quote currency, plus a decaying anti-snipe tax of up to 30% on early buys. It splits the fee between the platform (0.45%), the creator, holders, or buyback/auto-LP, and keeps the launch liquidity permanently locked.

This read was written for the hook 0x26fd…68cc on Robinhood Chain and reused here: the two share a code shape, so constants such as fees, owners and addresses can differ.

How it works step by step

  • Launchpad hook: only the Slurp factory can create pools, and the hook itself owns each pool's single, permanently locked liquidity position.
  • Charges a trading fee of 1% to 5% (set per token at launch, which the creator can only lower) on buys and sells. It is always taken in the quote currency (ETH or an allow-listed stock).
  • A fixed 0.45% of trade volume goes to the platform. The rest goes to the creator, to token holders as dividends (portfolio mode), or to buyback-and-burn or auto-compounding into the locked liquidity.
  • During a launch window, an extra anti-snipe tax of up to 30% applies to buys and decays linearly to zero. There may also be a per-wallet, per-block maximum buy size.
  • Only exact-input swaps are allowed, and no one else can add liquidity to these pools.
Swap behaviour
On buys, the fee plus any decaying anti-snipe tax (up to 30% early in the launch window) is taken from the quote input before the swap. On sells, the 1% to 5% fee is taken from the quote output. Exact-output swaps revert, and early buys over the configured max size revert.
Liquidity behaviour
Third-party liquidity adds are blocked; only the hook's own launch position exists, and the hook never removes it, so that liquidity is permanently locked. Remove-liquidity callbacks are disabled, so the hook never runs on withdrawals.
Fee behaviour
The fee is 1% to 5% of quote volume on both buys and sells; it is fixed per token and the creator can only lower it. 0.45% of volume goes to the platform and the remainder goes to the creator, holders, or burn/auto-LP. A launch anti-snipe tax of up to 30% applies on buys, with 45% of it going to the platform and 55% to the creator side.
Owner & admin controls
The owner can change the platform fee recipient, payout thresholds, gas stipends, keepers, the burn/auto-LP spend share, and the routing table. The owner can also propose moving a creator's fee stream, which takes effect only after a 24-hour delay and can be vetoed by the creator. The owner cannot change fee tiers, pause trading, or withdraw funds.

Enabled Uniswap v4 callbacks

beforeInitialize, beforeAddLiquidity, beforeSwap, afterSwap, beforeSwapReturnDelta, afterSwapReturnDelta

beforeInitialize: only the factory can create pools and the price oracle is started. beforeAddLiquidity: blocks anyone but the hook from adding liquidity. beforeSwap: takes the buy fee and snipe tax from the input and enforces exact-input only. afterSwap: takes the sell fee from the output, enforces the early buy cap, and distributes fees. Swap return deltas: used to apply these fee deductions.

Security & trust assessment

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

Who controls it: A single owner controls the platform recipient, thresholds, keepers, and routes, and can propose creator-stream reassignments subject to a 24-hour delay and creator veto. The owner cannot raise fees, pause trading, or take funds.

Risk to user funds: The hook deducts 1% to 5% of each trade, plus up to 30% on buys early in a launch, and it holds accrued fees until they are paid out. There are no outside LPs; the seed liquidity is locked permanently by design.

Security findings

  • [info] Fee capped at 5% plus a temporary snipe tax: The trading fee is hard-limited to 1% to 5% and can only be lowered. The launch anti-snipe tax on buys is capped at 30% and decays to zero by the end of the window.
  • [info] Launch liquidity permanently locked: The only LP is the hook itself, and no code path removes liquidity. Outside LPs cannot add liquidity, so no third-party LP funds are at risk.
  • [low] Timelocked creator reassignment: The owner can propose redirecting a token's creator fee stream to new addresses. It executes only after 24 hours, and the creator can veto it.

Contract details

Verified source
Yes (SlurpV4Hook)
Compiler
solc 0.8.26+commit.8a97fa7a
Bytecode size
21,893 bytes
Upgradeable proxy
No
Detected patterns
erc20, launchpad, liquidity-management, moves-currency, oracle, ownable, return-delta, self-unlock, tax

Pools using SlurpV4Hook