Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 92,974,633
0xF52b…6ACc
The eight checks
21 pools use this hook, the first one 46 d ago.
- 01caution
Permissions that touch your moneyThe address enables before remove liquidity, before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
- 02n/a
What it takes from a swapNo pool with liquidity to swap through yet.
- 03n/a
LPs can get outClosed to outside LPs: only the hook's own liquidity is in the pool.
- 04pass
The fee is the feeA fixed fee of 0%, written in the pool key.
- 05caution
No one holds the switchOwned by 0xfFf277a117Ea28DA0f9136d9Df6411C83Ab2adf5. Owner-style functions: sweepProtocolFees, claimProtocolFees, claimCreatorFees, blockConfig, setTrustedRouter, claimPot.
- 06pass
The code cannot changeNot a proxy, no DELEGATECALL, no SELFDESTRUCT.
- 07pass
Only the PoolManager can call itEach callback refused a call that did not come from the PoolManager.
- 08pass
Track record21 pools over 45 days.
Measured at block 92,974,633. A hook with an owner or a dynamic fee can behave differently later; scan again before a large trade.
What the address allows
A v4 hook's permissions are the last fourteen bits of its address. The PoolManager calls only what they switch on.
address & 0x3fff0x2acc · 10101011001100
- bit 13Before initialize
- bit 12After initialize
- bit 11Before add liquidity
- bit 10After add liquidity
- bit 9Before remove liquidity
- bit 8After remove liquidity
- bit 7Before swap
- bit 6After swap
- bit 5Before donate
What it did to a real swap
A small swap each way and a liquidity round trip, run through the PoolManager and this hook inside a call that is never sent. The pool fee is expected; anything else missing is the hook.
ETH / KINDA
fee 0%- Swap ETH → KINDAno liquidity at the current price
- Swap KINDA → ETHno liquidity at the current price
- Add, then remove liquiditydeposit refused: NotAuthorized
pool 0xb88d18d74a64cdea00e8374234eae043d38a50c074b91220819107a85a627710
Read from the bytecode
- Code size
- 11,140 bytes
- Owner
- 0xfFf277a117Ea28DA0f9136d9Df6411C83Ab2adf5
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 7
- Callbacks open to anyone
- none
Its functions, uncensored
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.
- 0x03f60a78 pot
- 0x03fc2013 lpLocker
- 0x0aab43e2 previewBuyFees
- 0x0b232a44 unknown
- 0x21d0ee70 beforeRemoveLiquidity
- 0x249d39e9 BPS
bit 4
After donate
bit 3Before swap returns deltabit 2After swap returns deltabit 1After add returns deltabit 0After remove returns delta- Before initialize. Runs once, when a pool is created.
- Before add liquidity. Can refuse a deposit, or only let some addresses provide liquidity.
- Before remove liquidity. Can refuse a withdrawal. LPs may not get out.
- Before swap. Runs before every swap. On a dynamic-fee pool it can set the fee each time.
- After swap. Runs after every swap.
- Before swap returns delta. Can take part of what you put into a swap, or change how much is swapped.
- After swap returns delta. Can take part of what you get out of every swap.
0x259982e5
beforeAddLiquidity
0x4c5407b7 snipeCapQuote0x575e24b4 beforeSwap0x5884e804 sweepProtocolFees0x687e2c17 trustedRouter0x6c2bbe7e afterRemoveLiquidity0x6cae1683 unknown0x6fe7e6eb afterInitialize0x7195270a quoteOf0x77c654a3 claimProtocolFees0x79ba5097 acceptOwnership0x7b103999 registry0x7ec4f643 unknown0x83073da0 creatorFeeNFT0x875cd18b potCount0x8da5cb5b owner0x90ccadd3 claimCreatorFees0x91dd7346 unlockCallback0x9f063efc afterAddLiquidity0xb47b2fb1 afterSwap0xb5217bb4 pools0xb6a8b0fa beforeDonate0xb8b3229a feeSink0xbe378228 PROTOCOL_FEE_BPS0xc3244b9f blockConfig0xc45a0155 unknown0xc4e833ce getHookPermissions0xc64f5351 setTrustedRouter0xcc3cbd2a CREATOR_FEE_BPS0xcc4fb5e5 claimPot0xcedd3a0e isLive0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xdcf844a7 protocolFees0xe1b4af69 afterDonate0xe30c3978 pendingOwner0xf2fde38b transferOwnership0xfc52d1f0 creatorFees0xfcb56e5b setFeeSink