Three books.
One fill.
One unified margin account. Every order is quoted against all three books and routed to the venue with the best price for that size. Latency and fill quality are logged per venue.
Runs on your machine.
Nowhere else.
Keys are generated and encrypted locally. Agents execute in a sandboxed local runtime. Venue connections go direct from your device. oppen never holds funds, never sees a key, never phones home.
Agents trade.
You hold the keys.
Agents act autonomously inside a policy you write: markets, venues, notional cap, leverage, loss halt. The gateway checks policy before every order and the model cannot change it. Every decision is logged, including holds and refusals.
Built to be watched.
A dense terminal where every chart, book and gauge is drawn in characters. Agents' fills are labelled on the tape. The only bright thing on screen is the number that just moved.