Simulation
Uniswap v4 hooks · token launches

Build your pool's rules.
Then launch.

Snap together blocks that stop snipers, cap whales, burn supply and share fees with your team. Launch liquidity is locked for good. Then watch a simulated launch, swap by swap, before anything is deployed.

Open the builder →How it works
LaunchAccessProtectionFeesRewardsTokenomics
Live demo · Fair launch template
A simulated launch, swap by swap
Anti-Snipe
Sand­wich Guard
Dynamic Fee
Uniswap v4 swap

Sniper tries to buy ROGER with 2.5 ETH at launch

◆ Anti-Snipe cuts it to 0.034 ETH and charges a 25% launch fee.

Snipers got 2.0% of the supply with these blocks, and 59.8% with none.

Build your own →
Why bother

Same launch, two endings

We ran the exact same 400 seconds of trading twice: once with no rules, once with the Fair launch set. Same bots, same traders, same money.

No blocks400 seconds · 44 traders
59.8%
of the supply ended up with snipers
Bot profit
7.28 ETH
Traders in profit
18 of 32
Market cap at the end
28.9 ETH

Anyone can buy anything, any time.

Fair launch set400 seconds · 44 traders
2.0%
of the supply ended up with snipers
Bot profit
0.23 ETH
Traders in profit
30 of 32
Market cap at the end
45.6 ETH

Anti-Snipe, Sandwich Guard, Dynamic Fee.

How it works

Three steps, like the booklet in a box of bricks

No code and no wallet. You build on the left, watch it run in the middle, and check the results on the right.

BUILDING INSTRUCTIONSCaptain Hook · works with every set
  1. 1
    Parts
    1×1×

    Snap blocks onto your hook

    Each block is one rule. Drop it in and it clicks into its place on the swap's path.

  2. 2
    Parts
    1×

    Press play, watch the swaps

    Bots, snipers and traders hit your pool. Every block lights up when it steps in.

  3. 3
    Parts
    1×

    Check it, then launch

    Read the trust score and the swap receipt, fix what's flagged, and launch when the contracts are live.

Start from a set

Four ready-made builds

Open one in the builder and change anything. Each box lists its bricks and how safe it looks to traders.

SET 0013 bricks

Fair launch

Bot protection and a fair fee, no taxes.

88Open set →
SET 0023 bricks

Deflationary

Every buy burns, fees buy back and burn.

83Open set →
SET 0034 bricks

Creator coin

A small tax adds to fee income, shared with the team.

88Open set →
SET 0044 bricks

Fortress

Allowlist first, then strict caps.

88Open set →
Live sim
[0:00]Sniper tries to buy ROGER with 2.5 ETH→ Anti-Snipe cuts it to 0.034 ETH and charges a 25% launch fee.◆[0:01]Sniper tries to buy ROGER with 1.5 ETH→ Anti-Snipe cuts it to 0.034 ETH and charges a 24.2% launch fee.◆[0:09]Trader tries to buy ROGER with 0.468 ETH→ Anti-Snipe cuts it to 0.032 ETH and charges a 17.5% launch fee.◆[0:20]Trader tries to buy ROGER with 0.073 ETH→ Anti-Snipe cuts it to 0.03 ETH and charges a 8.3% launch fee.◆[0:25]Trader tries to buy ROGER with 0.058 ETH→ Anti-Snipe cuts it to 0.029 ETH and charges a 4.2% launch fee.◆[0:45]Sniper tries to sell 40% of their ROGER→ It goes through and they get 0.014 ETH. Dynamic Fee raises the fee to 0.8% because the price moved 0.5%.◆[0:50]Sniper tries to sell 40% of their ROGER→ It goes through and they get 0.035 ETH. Dynamic Fee raises the fee to 1.4% because the price moved 1.1%.◆[1:11]Trader tries to buy ROGER with 0.142 ETH→ It goes through and they get 12.14M ROGER. Dynamic Fee raises the fee to 3% because the price moved 3.8%.◆[1:14]Trader tries to buy ROGER with 0.074 ETH→ It goes through and they get 6.15M ROGER. Dynamic Fee raises the fee to 2.3% because the price moved 1.9%.◆[1:35]Trader tries to buy ROGER with 0.103 ETH→ It goes through and they get 7.97M ROGER. Dynamic Fee raises the fee to 2.9% because the price moved 2.6%.◆[1:50]Sniper tries to sell 50% of their ROGER→ It goes through and they get 0.019 ETH. Dynamic Fee raises the fee to 0.8% because the price moved 0.5%.◆[1:56]Trader tries to buy ROGER with 0.051 ETH→ It goes through and they get 3.92M ROGER. Dynamic Fee raises the fee to 1.6% because the price moved 1.3%.◆
All the parts

Ten blocks in six colours

Each block is one rule for your pool, and they all run inside one shared hook. Pick one to try it in the builder.

Launch

Set once when the pool opens
Team Vesting

Team tokens unlock slowly over time

Try it in the builder

Access

Who may trade, and when
Allowlist Phase

Only approved wallets can trade at first

Try it in the builder

Protection

Keep bots and whales in check
Anti-Snipe

Limits early buys and adds a launch fee that fades away

Try it in the builder
Sandwich Guard

Stops buying and selling in the same block

Try it in the builder
Max Transaction

Limits the size of every swap

Try it in the builder

Fees

What each swap pays
Dynamic Fee

Trades that move the price more pay a bigger fee

Try it in the builder
Buy / Sell Tax

A fixed tax on every buy and sell, paid in ETH

Try it in the builder

Rewards

Who earns from trading
Revenue Split

Shares your fee income with a team wallet

Try it in the builder

Tokenomics

Supply that shrinks over time
Auto Burn

Burns a little of every buy

Try it in the builder
Buyback & Burn

Fees buy tokens back and burn them

Try it in the builder
Good to know

Before you build

The honest small print, up front.

It's a simulation

Every number here comes from a simple model of one pool: 3 snipers, a sandwich bot and 40 traders over the first 400 seconds. It shows how your rules behave, not what the market will do.

Nothing is live yet

Launching opens once the contracts are on testnet. Until then, nothing you build touches a real chain or a wallet.

How fees work

There's no fee to launch, and launch liquidity is locked for good. Every swap pays the pool fee in ETH: 60% goes to you and 40% to Captain Hook. If you add a tax, Captain Hook keeps 10% of it.

Why the trust score

A hook can take a cut of every swap, and some hide it. Every setup here gets a trust score and a swap receipt, so traders can see the worst case before they buy.

Ready to build your hook?

Start from a set, stack your blocks and watch the launch play out. It all runs in your browser, and nothing is deployed.

Open the builder →