Standing order for LAPTOP

The arithmetic below works on numbers you type and needs no wallet. Connecting lets this page read your address and your Base balances so the spend can be checked against what you hold. It does not ask you to sign anything and cannot place an order — a standing order is signed in the venue that will fill it, not here.

Put money down before launch, walk away, and be filled near the opening price — with your money back if it doesn’t happen. Three of those four are deliverable. The fill is not. A fill needs someone on the other side; no signature, contract or service can conjure one. Anything that promises you a guaranteed fill at a guaranteed price before a token trades is lying about which half it is dropping.

This page is about the right-hand column. If you want the left-hand column, that is where to buy — and read the size curve first so you know what the open costs you.

A standing (limit) order on an established settlement protocol is an off-chain signature, not a transaction. Signing it costs no gas and moves nothing. It says: anyone may take up to N of my USDC, if and only if they hand back at least M LAPTOP in the same atomic settlement.

• Your funds never move until the fill. They sit in your wallet. There is no deposit, no escrow, no operator holding a balance for you.
• You sign once. The execution is done by whoever takes the other side, paying their own gas. You are not woken up for it.
• “Withdraw at any time” is not a withdrawal. There is nothing to withdraw — the money never left. You cancel the order, or you simply spend the money on something else and the order becomes unfillable.
• If it never fills, nothing happened. You are out the signature and nothing else.

Here is the mistake that makes standing orders fail silently: people set the ceiling at the price they saw, and then their own order pushes the price past it, so it can never fill. Against a constant-product pool the amount it moves is exact, and it is not complicated:

Spend a tenth of what is on the quote side of the pool and you pay about a tenth over the seed price, plus the fee. Spend the whole depth and you pay more than double. That term does not care how patient you are.

Both in the same asset. The second is the quote half of the seeded pool — the USDC or WETH side, not the LAPTOP side. You are guessing it; that is what the table below is for.

Minimum ceiling your order needs, if the pool opens shallower or deeper than you guessed. Shallow launches are the ones that break orders.

Splitting one order into several over the first hour is worth doing, but not for the reason it is usually sold. Against a pool that nobody else touches, splitting costs you slightly more, not less. The fee from each tranche stays in the pool and deepens it against you, so the next tranche pays into a pool your own fee just made worse. Four quarter-sized buys of 10% of the depth come out about 0.01% behind one whole one at a 0.30% fee. Slicing finer never helps, but it is bounded, and the bound is tidy: n tranches pay (1 − 1/n) of a ceiling, and that ceiling is about half the pool fee times your share of the pool while your share is small. Even infinitely fine slicing of that order stops around 0.013%. That is arithmetic, not an opinion, and this page’s tests check the sign, the size and the bound.

So the folklore is wrong twice over: a split is not free, and against a static pool it is never the cheaper path. It is worth paying that 0.01% anyway, but for a reason nobody states:

• It caps the damage from one bad print. Opens spike and settle. A single order sitting at the top fills at the top. A split averages across it.
• Later tranches see liquidity that did not exist at open. Depth arrives in the minutes after a launch; the formula above rewards that directly.
• It costs more in fees and gas, and each tranche can miss independently.

So: split to reduce how wrong you can be, and price it as insurance you are paying a little for — not as a discount. If your order is small against the depth, both the benefit and the penalty are noise.

Place it on a protocol that has been carrying other people’s signed orders for years and has been attacked the whole time. Not on a contract written for one launch — including one written by this page’s author, which is why there isn’t one.

Solvers compete for your order, and price improvement past your limit is returned to you rather than kept by the filler. For a launch, that difference matters: your ceiling stays a ceiling instead of quietly becoming the price.

1. Check the chain selector says Base.
2. Switch the form from Swap to Limit.
3. Sell token: your USDC or WETH. Buy token: paste the LAPTOP address below.
4. Set the limit price to your ceiling, and the expiry past launch.
5. Approve the exact order amount, then sign. The signature is not a transaction.

Also long-established and on Base. Note the difference: a maker order fills at your limit price, so the taker keeps anything better. Set the ceiling as the price you are content to pay, not as a hopeful bound.

• Off-chain cancel — free and instant, and what the UI gives you. It asks the order book to stop offering your order. Almost always enough.
• On-chain cancel — costs gas and is final. Use it if you actually need the order dead rather than probably dead.
• Revoke the approval — the belt-and-braces version, and the one that also closes the permission you granted. Do this once the order is done either way.

You wanted to be told when it goes through. A page like this one cannot tell you — it only runs while you are looking at it, and the whole point is that you are not. The notification has to come from something that runs when you are asleep:

• The order book’s own interface, which knows your order and can mail you.
• Your wallet, if it has fill or balance notifications.
• A block-explorer watch on your own address.

Set one of those up before you sign, and never from a link someone sends you afterwards. “Your order filled, click to claim” is a message you should expect to receive and ignore — a real fill needs nothing from you.

• Nobody can route the token yet. Fillers route through liquidity they have indexed. A pool that is minutes old may not be in that set, so a fillable order can sit unfilled through the exact window you were aiming at. This is the most likely way you end up with nothing.
• The open never comes back to your ceiling. If it gaps straight through, you do not fill. You keep your money. This is the design working.
• Your ceiling was under the fee floor — below —× the seed price nothing can fill at all, because the fee alone exceeds it.
• A transfer tax or a blocklist in the token. Many fillers refuse tokens that do not move exactly as much as they were sent. Check the token before you sign, not after.
• Expiry landed before the launch. Long expiries are their own risk: an order you forgot, still backed by an approval you forgot, is a standing offer at a price that stopped making sense.