Add EulerSwap hook on ethereum

[hooklist-generator]

Summary

A custom-curve AMM hook backed by Euler Finance lending vaults. It handles swaps entirely in beforeSwap by depositing input tokens into and withdrawing output tokens from Euler vaults using a concentrated invariant curve, replacing standard Uniswap pool mechanics. Native LP positions and donations are blocked via revert.

Flags

Flag	Value
beforeInitialize	true
afterInitialize	false
beforeAddLiquidity	true
afterAddLiquidity	false
beforeRemoveLiquidity	false
afterRemoveLiquidity	false
beforeSwap	true
afterSwap	false
beforeDonate	true
afterDonate	false
beforeSwapReturnsDelta	true
afterSwapReturnsDelta	false
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 "EulerSwap".
• Submitter did not provide a description. Using AI-generated description.

Closes #7115

[vercel]

Deployment failed for project hooklist with the following error:

Resource is limited - try again in 60 minutes (more than 450, code: "api-deployments-paid-per-hour").

Learn More: https://vercel.com/uniswap?upgradeToPro=build-rate-limit

[github-actions]

Review: hooks/ethereum/0xcd36cc7d9892b5d50e7bcfbf81d56e3e6c1028a8.json

Flag Verification

Address suffix 0x28a8 = 10408 = 10100010101000 binary (14 bits). All 14 flags match both the address bitmask and the getHookPermissions() function in src_UniswapHook.sol:

• beforeInitialize: true ✓
• afterInitialize: false ✓
• beforeAddLiquidity: true ✓
• afterAddLiquidity: false ✓
• beforeRemoveLiquidity: false ✓
• afterRemoveLiquidity: false ✓
• beforeSwap: true ✓
• afterSwap: false ✓
• beforeDonate: true ✓
• afterDonate: false ✓
• beforeSwapReturnsDelta: true ✓
• afterSwapReturnsDelta: false ✓
• afterAddLiquidityReturnsDelta: false ✓
• afterRemoveLiquidityReturnsDelta: false ✓

Properties Verification

dynamicFee: false ✓ — _beforeSwap returns (selector, returnDelta, 0) — the fee override is hardcoded to 0. No OVERRIDE_FEE_FLAG or updateDynamicLPFee call in the hook source. Fee is set statically at activation time via uint24 fee = uint24(p.fee / 1e12).

upgradeable: false ✓ — source_meta.json shows "proxy": false. Hook instances use a fixed-target delegatecall pattern (EIP-1167-style) to an immutable implementation; there is no admin function to change the implementation address. The delegatecall is to a fixed deployment address, not an upgrade path.

requiresCustomSwapData: false ✓ — The bytes calldata (hookData) parameter in _beforeSwap is unnamed and completely unused. Swaps work correctly with empty hookData.

vanillaSwap: false ✓ — beforeSwapReturnsDelta is true, which mandates false. Additionally, the hook handles swaps entirely in beforeSwap by depositing into and withdrawing from Euler vaults using a custom curve invariant, replacing standard Uniswap pool mechanics.

swapAccess: "none" ✓ — _beforeSwap has no access control. The nonReentrantHook modifier is a reentrancy guard, not a gating mechanism. No allowlist, governance flag, or temporal gating is present.

Metadata Verification

• verifiedSource: true ✓ — source_meta.json confirms "verified": true.
• chainId: 1 ✓ — chains.json maps ethereum to chainId 1.
• name: "EulerSwap" ✓ — Matches contractName from source_meta.json. No promotional or endorsement language.
• description ✓ — Accurately describes the on-chain logic: custom-curve AMM backed by Euler Finance lending vaults, swaps handled entirely in beforeSwap via vault deposits/withdrawals, native LP positions and donations blocked via revert. No audit claims or marketing language.

Summary

All flags, properties, and metadata are correct and substantiated by the verified on-chain source code.

[Ponx]

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