Arc Uniswap v4 hook risk · apexfaucet.xyz

Arc Uniswap v4 hook risk

Arc pre-trade risk in microseconds, no chain call: pass ?hook=0x… and get the verdict read straight out of the Uniswap v4 permission bits encoded in the hook address. It tells you what the hook is ALLOWED to do (run on every swap, rewrite the amounts, touch liquidity), not what it does: permission is not behaviour. No trap rate is quoted - the 83.7% we used to state came from a pre-buy sell quote and was withdrawn on 2026-09-22 after a real round trip sold 10 of 10 pools with that signature.

Unavailable6 calls · 3 buyers in 30 days

Sample input

input4 keys

discoverabletrue

method"GET"

queryParams1 key

hook"0xB780642659b782b672f20516fC267d5069252044"

type"http"

inputobject, 4 keys

Sample response

response3 keys

data9 keys

historicalTrapRatenull

hook"0xb780642659b782b672f20516fc267d5069252044"

method"Uniswap v4 permission bits read from the hook address. No base rate is given: the 2026-09-17 rates were measured with a …"

note"Instant (no chain call). For a definitive answer on one pool use the exit check, which actually attempts the round trip."

oktrue

permissionBits"10000001000100"

permissions[…]2 items

verdict"can rewrite swaps"

why"This hook runs on every swap AND may rewrite the amounts, which is the machinery that can block or tax a sell. Permissio…"

oktrue

paid0.003

responseobject, 3 keys

Track record

Paid calls, last 30 days: 6
Buyers, last 30 days: 3
Last paid call: last week

Reported by the x402 directory.

Priced per call

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