Preload the boring bits
Know your default size and invalidation before the highlight appears.
The fastest honest path is a short ticket you still have time to read.
People who land here want the click-to-fill story. The honest version: we can shorten prep and UI friction. We cannot repeal physics, block times, or someone else’s matching engine. Speed of the trader and quality of the fill are different topics.
If a vendor promises the fastest AI trade execution and also holds your API key, they may well be faster — because they skipped you. That speed is the product you are actually buying: absence of a human fuse.
Three moves. None of them hand OpenFidex your funds.
Know your default size and invalidation before the highlight appears.
A PWA on the home screen beats logging into email during a spike.
A 400ms pause to read the payload is cheaper than a mistyped size.
Snappy prep is fair marketing. Invented matching-engine supremacy is not.
You will feel busy books. That feeling is information.
A lot of “I missed it” is really “I was on my phone hunting a 2FA email.”
We will not make execution faster by letting the model spend a standing allowance.
Not as a marketing leaderboard. If you are optimizing microseconds, you need a different setup than a consumer web app.
Sometimes the CEX app wins on raw tap-to-fill because they already have the money. You are choosing a different risk.
Only if you sign another one. Missed fills are part of public markets.
No. But this page stays dark-first because that is the product, not because lime shaves milliseconds.
No. OpenFidex is a non-custodial software interface. A wallet is created in your browser, you keep the keys, and you cryptographically sign every order before it reaches a third-party venue such as Hyperliquid. The software does not take custody of assets and does not submit transactions unless you sign them.
Nearby guides on the same topic — different intent, different copy.
Create an account with your email. You sign every transaction from your own wallet.