Launchpad hook on Ethereum

Uniswap v4 Hook Contract 0x145b55f0a166b5ec7cca5f53fc6ded19f42b0040 on Ethereum · Launchpad

Volume (24h)
$133
Value locked (TVL)
$0
All-time volume
$133
Pools using this hook
1
Swaps (24h)
3 (1 traders)
Total swaps
3

What it does

A launch hook that seeds and owns a token's liquidity position, applies a temporary cap on large early buys, and routes its position's trading fees to a beneficiary and treasury, while traders pay only the pool's normal fee and LPs can withdraw freely.

This read was written for the hook 0xb78f…4040 on Ethereum 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

  • Hook for a single-sided token launch pool where the hook itself owns a concentrated liquidity position (range lower/upper, tick floor/ceiling).
  • After each swap it checks a buy cap: during an early cap window, buys of the launched asset above a set percentage may be rejected.
  • Collects trading fees earned by its own position (harvest) and records amounts owed to a beneficiary and a protocol treasury, who withdraw them later.
  • Has a lock timer (lockedUntil) on its own position; outside LPs are not affected by withdrawal callbacks.
  • Owner and beneficiary addresses can be changed by their holders.
Swap behaviour
Swaps use the pool's fee; after a swap the hook may enforce a temporary buy-size cap while caps are active, reverting oversized buys. It cannot take tokens from swaps because return deltas are disabled.
Liquidity behaviour
No liquidity callbacks are enabled in the address, so LPs can add and withdraw freely; the hook only manages its own seeded position through the PoolManager.
Fee behaviour
Uses the pool's fixed fee tier; fees earned by the hook's own position are harvested and split between a beneficiary and the protocol treasury, with exact split not verifiable from bytecode.
Owner & admin controls
Owner can transfer ownership and the beneficiary can be updated; an origin-only setup function initializes the pool and position once. No fee-setting or pause function is visible.

Enabled Uniswap v4 callbacks

afterSwap

afterSwap: checks swaps against the early buy cap and tracks trading state.

Security & trust assessment

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

Who controls it: An owner and beneficiary hold keys; they can only reassign roles and claim the hook position's accrued fees.

Risk to user funds: The hook cannot touch trader swap amounts or other LPs' principal; it only holds fees from its own liquidity position. LP withdrawals are unrestricted.

Security findings

  • [low] Temporary buy cap: During a cap window, large buys may revert after the swap; exact cap percentage and window length are not readable from bytecode.
  • [info] LP withdrawals unrestricted: Remove-liquidity callbacks and return deltas are disabled, so the hook cannot block withdrawals or skim swap amounts.
  • [info] Fee custody for beneficiaries: Harvested position fees are held as owed balances and withdrawn by beneficiary/treasury; this is only the hook's own position fees.

Contract details

Verified source
No
Bytecode size
12,358 bytes
Upgradeable proxy
No
Detected patterns
erc20, moves-currency, ownable, self-unlock

Pools using Launchpad hook