Add MultiPoolsHook hook on ethereum

[hooklist-generator]

Summary

Enforces a fixed 1% swap fee on all swaps, split 0.7% to the pool creator and 0.3% to the platform, collected via BeforeSwapDelta and afterSwap return deltas. Liquidity is locked permanently after an initial seed — subsequent adds revert and removes always revert — and pools must be registered by the owner before swaps are permitted.

Flags

Flag	Value
beforeInitialize	false
afterInitialize	false
beforeAddLiquidity	true
afterAddLiquidity	false
beforeRemoveLiquidity	true
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 name. Using AI-derived "MultiPoolsHook".
• Submitter did not provide a description. Using AI-generated description.

Closes #7152

[github-actions]

Review: hooks/ethereum/0xb9260a3a5e73037204fec8d5530311241fd44acc.json

Address Flags

The lowest 14 bits of 0xb9260a3a5e73037204fec8d5530311241fd44acc are 0x0ACC, which decodes as:

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

All 14 flags match. The source code also confirms 0x0ACC in its NatSpec comment.

Properties

• dynamicFee: false ✓ — Fixed TOTAL_FEE_BPS = 100 (1%) with BPS_DENOM = 10_000. No call to updateDynamicLPFee() and no fee override returned from beforeSwap.
• upgradeable: false ✓ — poolManager and vault are immutable. No proxy pattern or delegatecall to a mutable address. transferOwnership changes admin but not contract logic.
• requiresCustomSwapData: false ✓ — hookData is ignored in all callbacks. Swaps function correctly with empty hookData.
• vanillaSwap: false ✓ — beforeSwapReturnsDelta and afterSwapReturnsDelta are both true, and the hook actively intercepts ETH and modifies swap amounts to collect a 1% fee.
• swapAccess: "governance" ✓ — beforeSwap contains require(registered[pid], "Hook: unregistered pool"), where registered is set by the owner via the registerPool admin function. This is a boolean flag gated by the owner.

Metadata

• verifiedSource: true ✓ — Confirmed by source_meta.json.
• chainId: 1 ✓ — Matches ethereum in chains.json.
• name: "MultiPoolsHook" ✓ — Matches contractName in source_meta.json and the contract declaration in source.
• description ✓ — Every technical claim is substantiated:
  • "fixed 1% swap fee" → TOTAL_FEE_BPS = 100 / BPS_DENOM = 10000
  • "0.7% to creator, 0.3% to platform" → CREATOR_BPS = 70, PLATFORM_BPS = 30
  • "collected via BeforeSwapDelta and afterSwap return deltas" → toBeforeSwapDelta(...) in beforeSwap, int128(int256(fee)) returned in afterSwap
  • "Liquidity locked permanently after initial seed" → lpSeeded flag, subsequent adds revert
  • "removes always revert" → beforeRemoveLiquidity always reverts with "MultiPools: LP locked forever"
  • "pools must be registered by the owner" → registerPool with onlyOwner modifier

No promotional, audit, or safety language present. All checks pass.

[Ponx]

Bot review verified; bitmask/flags/properties check out. LGTM.