Add RobFeeHook hook on robinhood

[hooklist-generator]

Summary

Fixed 2% swap fee on the native-ETH side of the pool, both directions, distributed instantly to four fixed recipients. Fee rate is a constant; only the distribution split is owner-adjustable. Non-upgradeable, no pool-creation or liquidity restrictions

Flags

Flag	Value
beforeInitialize	false
afterInitialize	false
beforeAddLiquidity	false
afterAddLiquidity	false
beforeRemoveLiquidity	false
afterRemoveLiquidity	false
beforeSwap	true
afterSwap	true
beforeDonate	false
afterDonate	false
beforeSwapReturnsDelta	true
afterSwapReturnsDelta	true
afterAddLiquidityReturnsDelta	false
afterRemoveLiquidityReturnsDelta	false

Properties

Property	Value
dynamicFee	false
upgradeable	false
requiresCustomSwapData	false
vanillaSwap	false
swapAccess	none

Warnings

• Submitter did not provide a name. Using AI-derived "RobFeeHook".

Closes #1073

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Project	Deployment	Actions	Updated (UTC)
hooklist	Ready	Preview, Comment	Jul 15, 2026 3:30pm

[github-actions]

Review: hooks/robinhood/0x5f794cf7faba3c8526079292726f29e5a88f40cc.json

Address Flags

Address ends in 0x40cc. Lowest 14 bits: 0x00cc = 0b00000011001100.

Bit	Flag	Address	File	Source
7	beforeSwap	1	true	true ✓
6	afterSwap	1	true	true ✓
3	beforeSwapReturnsDelta	1	true	true ✓
2	afterSwapReturnsDelta	1	true	true ✓
all others	—	0	false	false ✓

Matches getHookPermissions() in the source.

Properties

• dynamicFee: false ✓ — FEE_BPS = 200 is a constant. beforeSwap returns a hardcoded 0 for the fee override (no lpFeeOverride). No call to poolManager.updateDynamicLPFee().
• upgradeable: false ✓ — No proxy patterns, no delegatecall, no SELFDESTRUCT. poolManager and all four recipients are immutable. Uses Ownable2Step only for share distribution control.
• requiresCustomSwapData: false ✓ — Neither beforeSwap nor afterSwap reads hookData (parameter is unnamed). Swaps work correctly with empty hookData.
• vanillaSwap: false ✓ — Correctly false because beforeSwapReturnsDelta and afterSwapReturnsDelta are both true; the hook diverts ETH from swaps to recipients via return deltas.
• swapAccess: "none" ✓ — beforeSwap only enforces onlyPoolManager (pool manager call validation), with no allowlist, governance flag, or temporal gating on who may swap.

Metadata

• verifiedSource: true ✓ — Confirmed by source_meta.json ("verified": true).
• chainId: 4663 ✓ — Matches chains.json entry for robinhood.
• name: "RobFeeHook" ✓ — Matches both the contract name and NatSpec @title RobFeeHook.
• description ✓ — Every claim is substantiated: 2% fee (FEE_BPS = 200), native-ETH side (key.currency0.isAddressZero() check), both swap directions (separate handling in beforeSwap/afterSwap), four immutable recipients (recipient0..3), constant fee rate, owner-adjustable shares (setShares), no liquidity restriction flags. No promotional, audit, or safety language present.

All checks pass.