Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,089,286
0x188D…5080
The eight checks
9 pools use this hook, the first one 48 d ago.
- 01pass
Permissions that touch your moneyNone of the permissions that let a hook take from swaps or from LPs are switched on.
- 02n/a
What it takes from a swapNo pool with liquidity to swap through yet.
- 03pass
LPs can get outLiquidity added and removed in the same block came back whole.
- 04caution
The fee is the feeIts pools use a dynamic fee that the hook sets before every swap. It stands at 0% now and can change.
- 05caution
No one holds the switchNo owner() but it has setPoolConfig.
- 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 record9 pools over 48 days.
Measured at block 93,089,286. 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 & 0x3fff0x1080 · 01000010000000
- 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.
AI / USDG
fee dynamic, now 0%- Swap AI → USDGno liquidity at the current price
- Swap USDG → AIno liquidity at the current price
- Add, then remove liquiditycame back whole
pool 0x969500bd5d7baed02aee876e45f67a0c2a9dd8434ecc6cdd0e45181bd6d86bc3
Read from the bytecode
- Code size
- 8,013 bytes
- Owner
- none found
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 0
- 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.
- 0xdc98354e beforeInitialize
- 0xe1b4af69 afterDonate
- 0xfa013e20 DEFAULT_FILTER_PERIOD
- 0xc4e833ce getHookPermissions
- 0xd9df25b7 pendingConfigOf
- 0xdc4c90d3 poolManager
bit 4
After donate
bit 3Before swap returns deltabit 2After swap returns deltabit 1After add returns deltabit 0After remove returns delta- After initialize. Runs once, right after a pool is created.
- Before swap. Runs before every swap. On a dynamic-fee pool it can set the fee each time.
0x9f063efc
afterAddLiquidity
0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0x84bb1d7d MAX_BASE_FEE_PIPS0x975deff4 previewFee0x9e09ed5f defaultConfig0x6c2bbe7e afterRemoveLiquidity0x6ef61607 configOf0x6fe7e6eb afterInitialize0x48ee2d36 effectiveMaxVolatilityAccumulator0x4cbf635b setPoolConfig0x575e24b4 beforeSwap0x259982e5 beforeAddLiquidity0x2ebc6a30 MAX_VOLATILITY_ACCUMULATOR0x36119be5 MAX_DECAY_PERIOD0x06c42806 volatilityState0x21d0ee70 beforeRemoveLiquidity0x2292fa2e MAX_VOLATILITY_TICKS