Ask for the diagram
Four boxes is enough. If they need a novella, they are hiding a custodian or a mess.
Engine as metaphor for the core loop
Best AI Trading Engine
If a vendor cannot draw their engine on a napkin, they are selling smoke.
Non-custodialYou sign every tradeAI is informational
What this search should actually mean
“Engine” sounds like a proprietary turbine in a locked room. Sometimes that is a matching engine. Sometimes it is a Python file with a newsletter. Either way, you deserve a diagram.
OpenFidex’s core loop is dull on purpose: data and models produce context, you produce intent, your wallet produces a signature, a third-party venue produces a fill or it does not. That is the engine. There is no fourth hidden piston where we borrow your coins.
How people actually start
Three moves. None of them hand OpenFidex your funds.
Circle the spending box
Only one box should be allowed to spend, and it should have your name on it.
Ignore chrome horsepower
Particle effects are not horsepower. Coverage and a stable signing path are.
What the software is built to do
Analysis in
The model is an input transformer, not a treasurer.
Intent out
Your ticket is the only thing the venue should ever see from this stack.
Replaceable parts
Venues can change. The “you sign” piston should not.
No mystery throughput claim
We will not quote fake TPS as if this were a Layer-1 launch video.
Questions this page actually answers
Is the engine on-chain?
Your signed transaction may be. The web UI is not a smart contract you deposit into.
Can I plug in another engine?
You can originate ideas elsewhere and still sign here. That is a feature of self-custody.
Do plans change the engine?
They may change which tools you see. They do not add a house signer.
Why not call it a matching engine?
Because we do not match. Words matter on this page especially.
Does OpenFidex hold my funds or place trades for me?
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.
Keep reading
Nearby guides on the same topic — different intent, different copy.
Create a free account and keep the keys
Create an account with your email. You sign every transaction from your own wallet.