Add LayerMeme Static Fee Hook v2 (Base) hook on base

[hooklist-generator]

Summary

A Uniswap v4 hook used by the LAYERMEME token launch platform. It enforces fixed LP fees per launched token pool, collects a protocol fee on launched token swaps, and supports optional MEV protection modules and per-pool extensions via custom swap data. The source is verified on BaseScan and the hook is deployed on Base mainnet.

Flags

Flag	Value
beforeInitialize	true
afterInitialize	false
beforeAddLiquidity	true
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	true
upgradeable	false
requiresCustomSwapData	false
vanillaSwap	false
swapAccess	none

Warnings

None

Closes #536

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Project	Deployment	Actions	Updated (UTC)
hooklist	Ready	Preview, Comment	May 21, 2026 6:54pm

[github-actions]

Review: hooks/base/0x5fef75737d2c547c9ea11e750b207239954368cc.json

Contract: LayerMemeHookStaticFeeV2 (verified on BaseScan)

---

Address Flags

Address last 2 bytes: 0x68cc = 0110 1000 1100 1100

Bit	Flag	Expected	File
13	beforeInitialize	true	true ✓
12	afterInitialize	false	false ✓
11	beforeAddLiquidity	true	true ✓
10	afterAddLiquidity	false	false ✓
9	beforeRemoveLiquidity	false	false ✓
8	afterRemoveLiquidity	false	false ✓
7	beforeSwap	true	true ✓
6	afterSwap	true	true ✓
5	beforeDonate	false	false ✓
4	afterDonate	false	false ✓
3	beforeSwapReturnsDelta	true	true ✓
2	afterSwapReturnsDelta	true	true ✓
1	afterAddLiquidityReturnsDelta	false	false ✓
0	afterRemoveLiquidityReturnsDelta	false	false ✓

All 14 bits match getHookPermissions() in LayerMemeHookV2.sol.

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Properties

• dynamicFee: true ✓ — _setFee() calls IPoolManager(poolManager).updateDynamicLPFee(poolKey, fee) on every swap.

• upgradeable: false ✓ — source_meta.json reports proxy: false. No proxy patterns, delegatecall, or mutable implementation storage in source.

• requiresCustomSwapData: false ✓ — Both _runMevModule and _runPoolExtension gracefully handle empty hookData by defaulting to PoolSwapData with empty byte arrays. No revert path for missing swap data.

• vanillaSwap: false ✓ — The hook uses beforeSwapReturnsDelta and afterSwapReturnsDelta to take protocol fees on every swap, materially changing swap execution.

• swapAccess: "none" ✓ — _beforeSwap has no access control gating who can swap. MEV module can raise fees but cannot block swaps.

---

Metadata

• verifiedSource: true ✓ — source_meta.json confirms verified: true.
• chainId: 8453 ✓ — Matches base in chains.json.
• name ✓ — "LayerMeme Static Fee Hook v2 (Base)" is a reasonable qualified label derived from the contract name LayerMemeHookStaticFeeV2. No promotional, audit, or endorsement language.
• description ✓ — Accurately describes the fixed LP fee enforcement, protocol fee collection on swaps, optional MEV protection, and per-pool extensions. All claims are substantiated by the Solidity logic.

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All flags, properties, and metadata are correct. Approving.

[marktoda]

Bot review verified. LayerMeme Static Fee Hook v2 on base (0x5fef...68cc). Bitmask 0x38cc → beforeInitialize, beforeAddLiquidity, beforeSwap, afterSwap, beforeSwapReturnsDelta, afterSwapReturnsDelta. Props consistent (dynamicFee=true despite 'static fee' naming — fee dynamism comes from flag 0x4000, which is set). LGTM.