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

[hooklist-generator]

Summary

A Uniswap v4 hook used by the LAYERMEME token launch platform. It dynamically adjusts LP fees based on volatility, 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 #535

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
hooklist	Ready	Preview, Comment	May 21, 2026 6:55pm

[github-actions]

Review: hooks/base/0x440f4148e323de5d8196582628971bfff802e8cc.json

Address Flags

Decoded 0xe8cc & 0x3FFF = 0x28cc (binary: 10 1000 1100 1100). All 14 flag bits match the hook file exactly, and are confirmed by getHookPermissions() in LayerMemeHookV2.sol.

Properties

• dynamicFee: true ✓ — LayerMemeHookDynamicFeeV2._setFee() computes a volatility-based LP fee and calls IPoolManager.updateDynamicLPFee() on every swap.

• upgradeable: false ✓ — No proxy pattern, no delegatecall, no mutable implementation pointer. source_meta.json confirms proxy: false.

• requiresCustomSwapData: false ✓ — Both _runMevModule and _runPoolExtension explicitly handle empty swapData (falling back to empty PoolSwapData structs), so swaps with no hookData execute without failure.

• vanillaSwap: false ✓ — beforeSwapReturnsDelta and afterSwapReturnsDelta are both true; the hook materially alters swap amounts by taking a protocol fee via toBeforeSwapDelta and returning unspecifiedDelta in afterSwap.

• swapAccess: "none" ✓ — _beforeSwap has no caller checks, no allowlist, no governance gate, and no temporal restriction. Swaps are open to all.

Metadata

• verifiedSource: true ✓ — Confirmed by source_meta.json.
• chainId: 8453 ✓ — Matches Base mainnet and the hooks/base/ directory.
• name ✓ — "LayerMeme Dynamic Fee Hook v2 (Base)" is a reasonable human-readable form of the on-chain contract name LayerMemeHookDynamicFeeV2. No promotional, audit, or endorsement language.
• description ✓ — All claims are substantiated by the source: volatility-based dynamic fees (_setFee/_getVolatilityAccumulator), protocol fee collection (_hookFeeClaim, poolManager.mint), optional MEV modules (_runMevModule), and per-pool extensions (_runPoolExtension). No marketing or safety guarantees present.

All fields verified. No issues found.

[marktoda]

Bot review verified. LayerMeme Dynamic Fee Hook v2 on base (0x440f...e8cc). Bitmask 0x28cc → beforeInitialize, beforeAddLiquidity, beforeSwap, afterSwap, beforeSwapReturnsDelta, afterSwapReturnsDelta. dynamicFee=true. LGTM.