Token hook on Ethereum

Volume (24h)

$0

Value locked (TVL)

$0

All-time volume

$0

Pools using this hook

3

Swaps (24h)

15 (1 traders)

Total swaps

15

What it does

A launch-token hook that charges buyers and sellers a tax on each swap, with a sell tax that appears to change after launch and owner-adjustable rates of unverified cap, while LPs can always withdraw.

How it works step by step

• Acts as a token-launch hook that charges a buy tax and a sell tax on swaps in its pool, using swap return deltas.
• Sell tax appears to start at a set level when trading opens and changes over time from an open timestamp; buy tax has a stated maximum constant.
• The owner can call two admin functions that appear to set tax parameters, and a one-time bind function wires up the token and pool addresses.
• The hook manages its own liquidity positions through the Uniswap position manager and gates who can add liquidity.
• Collected taxes are taken out of the pool manager and can be transferred to other addresses.

Swap behaviour

On buys and sells the hook can take a tax from the swap amounts through return deltas, with the sell tax apparently decaying from a starting level after the pool opens. Exact tax rates and caps cannot be confirmed from bytecode.

Liquidity behaviour

Adding liquidity passes through a check that may restrict who can add. Remove-liquidity callbacks are disabled, so the hook cannot block or charge LP withdrawals.

Fee behaviour

Charges separate buy and sell taxes on top of the pool fee; a MAX_BUY_TAX_BPS constant suggests a capped buy tax and SELL_TAX_START_BPS suggests a time-decaying sell tax, but exact percentages are not visible in the decoded data. Taxes are taken by the hook and sent to recipients configured at setup.

Owner & admin controls

The owner can call two functions that appear to adjust buy and sell tax settings and a one-time bind function; whether these are capped cannot be verified from bytecode. Ownership can be transferred or renounced.

Enabled Uniswap v4 callbacks

beforeInitialize, beforeAddLiquidity, beforeSwap, afterSwap, beforeSwapReturnDelta, afterSwapReturnDelta

beforeInitialize: restricts pool setup to the intended pool; beforeAddLiquidity: gates liquidity additions; beforeSwap: computes and may take tax on the input side; afterSwap: takes tax from output and updates tracking; beforeSwapReturnDelta/afterSwapReturnDelta: let the hook deduct tax from swap amounts.

Security & trust assessment

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

Who controls it: A single owner controls tax settings and setup binding. The worst case is raising taxes up to whatever unverified limit the code enforces.

Risk to user funds: The hook can deduct a buy or sell tax from each swap; the exact maximum is unknown from bytecode. LP principal cannot be locked by this hook since withdrawal callbacks are disabled.

Security findings

• [medium] Owner-adjustable swap taxes: Two owner-only functions write the storage used for buy and sell tax; a max buy tax constant exists but the sell tax cap cannot be confirmed from bytecode.
• [info] Swap amounts can be deducted: Swap return deltas are enabled, so the hook takes tax directly from trades and pulls it from the pool manager.
• [info] LP withdrawals unrestricted: Remove-liquidity callbacks are disabled, so LPs cannot be blocked from withdrawing by this hook.

Contract details

Verified source

No

Bytecode size

14,639 bytes

Upgradeable proxy

No

Detected patterns

erc20, moves-currency, ownable, return-delta, tax

Pools using Token hook