Routing a pool that triggers an arb recapture
Read what a router, an aggregator or an indexer has to change for a pool that triggers an arb recapture: gas, the route's effect on the split, and the events.
What changes for a router, an aggregator, a quoter or an indexer when the pool on the other side of a swap has arb recapture on. Three things change: the gas the swap needs, how the profit splits, and how close to execution a quote should be taken.
Which Pools These Are
Every pool on Hookr's shared hook names HookrRoot in PoolKey.hooks. Arb recapture is on by default: the root reaches the arb recapture lane for every pool that did not opt out at launch, and a pool that opted out never reaches the lane code. laneOf(id) on the root answers the lane for a pool: the executor, its runtime code hash, the partner share, whether the pool is on it, the gas cap and the gas floor. A pool fixes its terms when it opens, so whether it recaptures is read once from the pool and holds for its life.
The root's address renders below from the release book the app ships.
Hookr’s core and own-hook contracts
HookrRoot is the hook every Hookr pool names, and each pool records the Rules it opens with. The combined core carries every Hook Block in one Rules contract, with six parts pinned by code hash and a key for each block HookrRoot admits.
HookrOwnedRootFactoryV2 deploys a hook of your own with its own lane, and the two swap modules are admitted under the combined core. Each is verified on chain; the table below lists these contracts.
Hookr’s contracts
The table lists Hookr’s 35 core contracts, rendered from the release book the app ships, source commit 412960b37a631ce145d49fb4a1887f04a4d1fa74: HookrRoot, the hook every Hookr pool names, first, then the contracts a swap passes through, then the rest in the order they were deployed.
Each one’s source is verified on RobinScan, on Sourcify as an exact match and on Blockscout as a full match. The arb recapture table below repeats HookrLane and adds What The Hook’s executor. None of the contracts they add is in the release book.
Arb recapture
The registry opened the lane on HookrRoot on 2026-10-07. The executor is What The Hook’s contract, not Hookr’s.
| Contract | Address |
|---|---|
| HookrLane, the arb recapture lane on HookrRoot | 0x9A8a1006469BA196f8FEfc017a53505C83A060BB |
| What The Hook's arb recapture executor, 25% of each arb recapture's profit | 0x4B4c16681401454140a9dBca55e5c186BBE8D728 |
The Gas Point
A swap on a pool with arb recapture on must carry the lane's gas floor plus its own gas. Read the floor as gasFloor from laneOf(id) on the root, or laneGasFloor in hookr-sdk. It is 6,802,619 at the lane's 3,000,000 gas cap. The root requires the whole floor before the first arb recapture runs, whether or not the lane finds a profit, so eth_estimateGas includes it.
A 0.001 ETH buy on ETH/HOOKR estimates at about 7.5 million now. Send the estimate plus a sixth, and never override the result downwards. A fixed limit should be at least 8.8 million. Unused gas is refunded.
How the Profit Splits
Each arb recapture profit splits three ways: the partner's executor keeps up to the lane's share, 25% today; Hookr takes its cut of the profit; and the rest is the pool's, split as it froze it at launch between the King of the Pool pot where the pool has one and its LPs. recaptureSplit in hookr-sdk works out a pool opened at 25% to the wei at the lane's share.
What The Hook's executor runs the arb recapture, and if it cannot, the trade goes through without it.
Quoting
Quote the path you route: HookrQuoter's quoteExactInputSingle and quoteExactOutputSingle, in V4Quoter's shape, for the Universal Router, and quote(Swap, payer) for HookrRouter. quoteDetailed(Swap, payer) adds the payer's arb recapture claim. Swapping and quoting has each call.
An arb recapture moves the pool's price, so a quote can be stale by one arb recapture even within the same block. Quote close to execution and use the amount bound for slippage.
What an Indexer Sees
Read the pool's terms from the pool, never from events: its Hook Blocks and its lane are frozen at launch. Keep arb recapture profit apart from swap fees: it is paid out of the arb's profit, never out of a trade.