Add LivoSwapHook (1 fee tier) hook on robinhood

[hooklist-generator]

Summary

A singleton Uniswap v4 hook that collects a fixed 1% LP fee (split 50/50 between creator and treasury) on all swaps, plus a time-limited buy/sell tax, for tokens graduated via the Livo launchpad. Swaps revert before a token's graduation event.

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	governance

Warnings

• Submitter did not provide a description. Using AI-generated description.

Closes #1085

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Project	Deployment	Actions	Updated (UTC)
hooklist	Ready	Preview, Comment	Jul 16, 2026 2:39pm

[github-actions]

Review: hooks/robinhood/0xbffe76cc9e506285032b2e5d1b74b579e39ac0cc.json

Address Flag Verification

Address last 2 bytes: 0xC0CC. Lowest 14 bits: 0xC0CC & 0x3FFF = 0x00CC = 0b00_1100_1100.

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

All flags match getHookPermissions() in the source and the hook file.

Properties

• dynamicFee: false ✓ — _beforeSwap always returns 0 as the fee override; no updateDynamicLPFee() call anywhere.
• upgradeable: false ✓ — No proxy patterns, delegatecall, or SELFDESTRUCT. source_meta.json confirms proxy: false. Contract uses immutable for LAUNCHPAD.
• requiresCustomSwapData: false ✓ — The hookData bytes parameter is accepted but never read; swaps function correctly without any hookData.
• vanillaSwap: false ✓ — Correctly false: beforeSwapReturnsDelta and afterSwapReturnsDelta are both true; the hook actively intercepts ETH flows to collect LP fees and taxes.
• swapAccess: "governance" ✓ — _beforeSwap reverts with NoSwapsBeforeGraduation() if ILivoToken(tokenAddress).graduated() returns false. The graduated boolean is set by the Livo launchpad admin (owner-controlled state), matching the "governance" classification (boolean flag set by an owner/admin).

Metadata

• verifiedSource: true ✓ — Confirmed by source_meta.json ("verified": true).
• chainId: 4663 ✓ — Matches chains.json entry for robinhood.
• name: "LivoSwapHook (1 fee tier)" ✓ — Contract name is LivoSwapHook; "(1 fee tier)" is factual (LP_FEE_BPS = 100 = 1% fixed fee). No promotional or endorsement language.
• description ✓ — All claims are substantiated by source:
  • "singleton" — NatSpec: @dev Singleton hook serving all taxable tokens graduated via LivoGraduatorUniswapV4
  • "fixed 1% LP fee" — LP_FEE_BPS = 100 out of BASIS_POINTS = 10000
  • "split 50/50 between creator and treasury" — treasuryShare = lpFeeAmount / 2; creatorLpShare = lpFeeAmount - treasuryShare
  • "time-limited buy/sell tax" — _getTaxParams checks block.timestamp > config.graduationTimestamp + config.taxDurationSeconds
  • "tokens graduated via the Livo launchpad" — ILivoToken(tokenAddress).graduated() gating
  • "Swaps revert before graduation" — revert NoSwapsBeforeGraduation()

All fields are accurate. Approving.