Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 92,951,429
0x2F37…2Acc
The eight checks
27 pools use this hook, the first one 86 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.
- 02pass
What it takes from a swapIt takes 1.00% on top of the pool fee.
- 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 switchNo owner() but it has sweep, setPlatformShareBps.
- 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 record27 pools over 85 days.
Measured at block 92,951,429. 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.
TSLA / TDOGE
fee 0%- Swap TSLA → TDOGEhook takes 1.00%
- Swap TDOGE → TSLAno liquidity above the price
- Add, then remove liquiditydeposit refused: error 0x85848de8
pool 0xfe8238625c013beeb57cd885b1bbc77e3b26a22aa42fe4c73774421f34a80b5b
Read from the bytecode
- Code size
- 15,268 bytes
- Owner
- none found
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 6
- 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.
- 0x01681a62 sweep
- 0x066ada90 poolStatus
- 0x1fd71a18 creatorOwed
- 0x21d0ee70 beforeRemoveLiquidity
- 0x240b9586 platformOwed
- 0x259982e5 beforeAddLiquidity
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.
0x26c0d1c8
registerCreator
0x3fc8cef3 weth0x523925bf launchRouter0x575e24b4 beforeSwap0x606003e8 HOOK_VERSION0x6b77f58a unknown0x6c2bbe7e afterRemoveLiquidity0x6fe7e6eb afterInitialize0x791b98bc positionManager0x7bec265a unknown0x7e96577c unknown0x80314c1f pendingCreatorOf0x882292a5 pendingPlatformTreasury0x91dd7346 unlockCallback0x94714065 platformShareBps0x9f063efc afterAddLiquidity0xa881ede5 unknown0xaf7179c6 acceptPlatformTreasury0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0xb8b16135 unknown0xbf2a74f7 setPlatformShareBps0xc4e833ce getHookPermissions0xc951afa8 unknown0xc9e75cab acceptCreator0xcab1ef67 quoteOf0xd5f45026 unknown0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xdea5c2e0 creatorOf0xe138818c platformTreasury0xe1b4af69 afterDonate0xe33f462d proposePlatformTreasury0xe9671b37 proposeCreator0xfacba08d owedOf