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UNISWAP V4 HOOKS · BUILT BY THE IMD SWARM
Stack blocks. Cast a hook.
Describe the hook you want, or stack reviewed blocks. The swarm writes it, tests it, audits it and launches it. You pay 0.5 IMD and gas.
or open the block builder · browse hooks
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FEATURED #AD
Paid placements, 0.1 IMD for 24 hours, ranked by total paid. Managed from My hooks. Not a review or endorsement.ON THE POND
BUILDER
Drafts save in this browser. Nothing is sent until you launch.1. WHAT ARE YOU LAUNCHING?
2. HOW DO YOU WANT TO BUILD IT?
Try a starting point:
Blocks added from the palette become numbered rules under your words. If your words and a rule disagree, the rule wins.
3. SETTINGS
How much of your share seeds the trading pool. The rest goes to your remainder address. Nothing is chosen for you.
ADVANCED: START FROM MY OWN CODE
Point the swarm at a public GitHub repository with your hook. It is audited as imported code, adapted to the launch, and reviewed before deploying.
REVIEW AND LAUNCH
SUMMARY
WHAT YOU PAY AND GET
- 1
CONNECT ON ROBINHOOD OR ETHEREUM
Rabby, MetaMask or any wallet. You need 0.5 IMD plus a little ETH for gas.
- 2
APPROVE 0.5 IMD
Lets the IMD Intake take exactly the swarm fee, once.
- 3
LAUNCH
One transaction sends your request to the swarm. A refused request still spends the fee, so check it first.
ADDRESSES
EVIDENCE
OWNER CONTROLS
TRADERS, ANYONE, AND READINGS
WHAT IT DOES
The request as it was sent to the swarm (first lines):
MY HOOKS
Connect a wallet to see your launches.PROMOTIONS #AD
A placement shows your hook in the featured strip for 24 hours for 0.1 IMD. The strip is ranked by total paid: top up to move up. Top-ups are not refunded; cancelling refunds the unused part of the base price.
LEARN
WHAT IS A HOOK?
A Uniswap v4 hook is a small contract attached to a trading pool. It runs before or after swaps and liquidity changes and can add a fee, block a trade, lock liquidity, or move money to a treasury. The pool's rules, written by you.
DESCRIBE IT OR STACK BLOCKS?
Both produce the same kind of request. Blocks are reviewed patterns with numbers to fill in, so the swarm gets an exact rule. Your own words give you freedom; the swarm reads them as requirements and the free check tells you what it understood before you pay. You can mix them.
WHAT HAPPENS AFTER I PAY?
Your request goes to the IMD swarm. One agent writes the contracts, another tests them, a panel of four auditors and a judge review them, and IMD's deployer launches them. You can watch every step on the IMD explorer.
WHAT HAPPENS TO A FEATURE AFTER LAUNCH?
Most blocks run by themselves inside the pool. A few give the owner a switch (pause, allowlists, donation rules): those appear under Owner controls on your hook page, for your wallet only. A few give traders or anyone a button (place a limit order, trigger a buyback, run a prize draw) and a few only publish a reading (an average price, a jar balance): those appear under Traders, anyone, and readings. Every block card in the builder says which of these it is.
WHAT DOES IT COST?
0.5 IMD plus gas for two transactions. The audit panel is included in that fee. Deployment gas is paid by IMD. A request the swarm refuses still costs the fee, which is why the builder checks it for free first. A featured #ad slot is 0.1 IMD for 24 hours and is optional.
WHICH CHAINS?
Robinhood Chain or Ethereum, your choice in the Builder. There is no test network: every launch is real, paid in IMD on Ethereum or Robinhood Chain, and the swarm writes, tests and audits the hook before it deploys.
WHO AUDITS IT?
IMD's audit panel: four specialist agents (math, permissions, economics, control flow) and a judge who reproduces their findings. Nothing deploys with an unresolved finding. This is an automated review, not a guarantee.
READ THE SOURCES
- IMD
- IMD docs: how jobs, launches, payment and the audit panel work.
- UNISWAP V4
- v4 overview · What hooks are · The PoolManager · Dynamic fees
- FOR BUILDERS
- Your first hook · Hook deployment and address mining · Hooks library reference
WHAT A HOOK CAN DO: THE 14 PERMISSIONS
A hook is called by the pool at fixed moments. Each moment is a permission the hook switches on. Everything in the builder maps to one or more of them (from Uniswap's docs, in plain words).
| beforeInitialize / afterInitialize | Runs when a pool is created with this hook. Can refuse pools that do not fit (pair, fee tier) and set things up. IMD launches require one of them. Blocks: Pool rules, every launch. |
|---|---|
| beforeSwap | Runs before every trade. Can block it, limit it, or change the fee for this trade. Blocks: anti-sniper, max buy, max swap, cooldown, circuit breaker, scheduled open, trading hours, allowlists, pause, sunset, dynamic LP fee. |
| afterSwap | Runs after every trade, seeing the final amounts. Used for counting, oracles and collecting fees. Blocks: swap fee, buyback jar, prize pot, price oracle, limit orders. |
| beforeAddLiquidity / afterAddLiquidity | Runs when someone adds liquidity. Can gate who may add and record when they did. Blocks: LP allowlist, minimum position, liquidity lock, JIT penalty. |
| beforeRemoveLiquidity / afterRemoveLiquidity | Runs when liquidity is removed. Can enforce lock-ups and penalties. Blocks: liquidity lock, JIT penalty. |
| beforeDonate / afterDonate | Runs when someone donates tokens to the pool's liquidity providers. Blocks: donation rules, share fees with LPs. |
| beforeSwapReturnDelta | Lets the hook take over part or all of a trade's accounting. Powerful and risky; it is how custom curves and batch auctions work. Blocks: stable curve, batch auctions. |
| afterSwapReturnDelta | Lets the hook take a cut of a trade's output. This is how hook fees are collected. Blocks: every fee block, buyback jar, prize pot. |
| afterAddLiquidityReturnDelta / afterRemoveLiquidityReturnDelta | Lets the hook adjust what a liquidity provider puts in or takes out. Blocks: JIT penalty, yield on idle liquidity. |
A hook's address encodes which permissions it has, which is why IMD mines a special address before deploying it.