This is a Uniswap v4 hook on Robinhood Chain. Runs code on every swap. Sets its own swap fee. Can block LP withdrawals. Gates who can add liquidity. Runs at pool creation.
0x21a89d4f14c32ebd4e5088a7a1c67611c0fabfc0First pool 9 Nov 2026·View on explorer
CBe carefulNot in Uniswap’s hook registry · Source code not published · Has an admin who can change it · Upgradeable proxy: the owner can swap its code?
Pools
1
Last new pool
1h
Code size
1,419 B
What it can do
Runs code on every swap
Its code executes inside each trade in pools that use it.
Sets its own swap fee
Pools using it let the hook choose the swap fee instead of a fixed tier.
Can block LP withdrawals
It runs before liquidity is removed, so it can delay or refuse LP exits.
Gates who can add liquidity
It checks every deposit before it goes in.
Runs at pool creation
It runs when a pool is created, often to lock in that pool’s settings.
Safety report
Before you build on it. Automated checks, not an audit
8 to review1 passed2 info1 unknown
Contract3 to review
!Upgradeable proxyThe hook developer can swap out the code (currently 0x206f…5e59), so the rules of every pool using it can change later.
!The hook developer has an admin keyIts owner wallet is 0xdead…8258. That wallet can usually change fees, limits or allowlists after traders have bought in.
!Source code not publishedNobody can read what this hook actually does. Treat it as a black box.
Pools3 to review
!Pools don’t trade in Uniswap’s app yetIt runs code on swaps, so Uniswap’s app only routes it once Uniswap Labs approves it, and it isn’t approved yet. Adding liquidity still works, and other apps can trade it.
!Can reject swapsIt runs on every trade and can block it. Used for things like launch limits and start times.
!Can lock liquiditybeforeRemoveLiquidity can refuse withdrawals. Fine as an intended LP lock, a problem if LPs need to exit. Check the unlock conditions.
iControls the swap fee1 of its pools use a dynamic fee the hook sets per trade, so LP income depends on its logic.
iControls who can add liquiditybeforeAddLiquidity checks every deposit, so outside LPs may be blocked.
✓Doesn’t touch swap amountsTraders get exactly what the pool’s curve and fee give.
Track record2 to review
!Not in Uniswap’s hook registryNot listed by Uniswap Labs, so nobody outside the hook developer has looked at it. Most abandoned and malicious hooks are unlisted.
!Brand newIts first pool was created less than a day ago, so it has no track record. Prefer proven hooks for a real launch.
?No audit linkedNothing in the registry. Ask the hook developer for one or review the source yourself.