Add uTokenHook hook on ethereum

[hooklist-generator]

Summary

Deflationary hook for ETH/token pools that burns a configurable percentage (up to 10%) of the token on every swap. Burn is applied in beforeSwap for token-specified swaps and in afterSwap for unspecified token output. Pool initialization and liquidity management are restricted to an immutable authorized address.

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	none

Warnings

• Submitter did not provide a name. Using AI-derived "uTokenHook".
• Submitter did not provide a description. Using AI-generated description.

Closes #7141

[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/0xd1cf932ce8d86b6b19720c064ea19683131100cc.json

Contract: uTokenHook (file: src_DeflationaryHook.sol) — verified on Ethereum mainnet.

Flags

Address low 14 bits: 0x00cc → beforeSwap=1, afterSwap=1, beforeSwapReturnsDelta=1, afterSwapReturnsDelta=1, all others 0. Matches getHookPermissions() in source and the hook file exactly. ✓

Properties

• dynamicFee=false: No updateDynamicLPFee() or lpFeeOverride. The pool fee is a static uint24 set at initialization. ✓
• upgradeable=false: No proxy pattern, no mutable delegatecall target. poolManager and authorized are immutable. ✓
• requiresCustomSwapData=false: The hookData parameter is unnamed and unused in both beforeSwap and afterSwap. Swaps function correctly with empty hookData. ✓
• vanillaSwap=false: Correct — beforeSwapReturnsDelta and afterSwapReturnsDelta are both true, and the hook actively redirects token amounts to burn them, materially changing swap output. ✓
• swapAccess="none": beforeSwap carries only the onlyPoolManager framework guard; no user-facing access control on swap execution. ✓

Metadata

• verifiedSource=true: Confirmed by source_meta.json. ✓
• chainId=1: Ethereum mainnet. ✓
• name="uTokenHook": Matches the on-chain contract name contract uTokenHook. ✓
• description: Accurately describes the burn mechanism — up to 10% cap (MAX_BURN_FEE_BPS = 1000), burn applied in beforeSwap when token is the specified currency and in afterSwap for unspecified token output, and authorized (immutable) gates pool init and liquidity operations. ✓

All fields verified against source. No issues found.

[Ponx]

Bot review verified; Vercel preview is advisory. LGTM.