The strategies a desk would run (market making, treasury, prediction markets) executing on your own exchange keys. Trade-only permissions, so nobody ever takes custody of your funds. Launch from the browser or the @ocbtradingbot Telegram mini-app.
Pick one, combine them, or describe what you want the book to do and we'll build it.
Pure market making (PMM) with dynamic spreads, fixed-peg defense, grid ladders, and cross-exchange market making: quote on one venue, hedge on another.
DCA and TWAP accumulation that doesn't move the market against you, funding and spot–perp basis capture for market-neutral yield, and scheduled rebalancing to target weights.
Make markets and take positions: spread capture, cross-venue and resolution arbitrage, and signal-driven entries on the venues most desks still ignore.
Tell us what you want the book to do. Accepted ideas are shadow-tested against real market data before they go live. Open to anyone committing $3,000+ in allocation.
You create trade-only API keys on your own exchange account. Withdrawal permissions are never requested and never needed. We provide the engine and the interface: never custody. The 15% performance share is on net realised profit only, settled by contract and invoiced, never automatically withdrawn.
Two-sided depth, not fake prints. Every fill, inventory position, spread and P&L reported live.
Nothing to pay
Run any strategy on a small book to see how it behaves. Same engine, same reporting, no cost.
$50 / month + 15% of net profit
The 15% is on net realised trading profit only. Settled by contract and invoiced: never automatically withdrawn from your exchange account.
Exchange rebates
We negotiate maker rebates on the volume our clients generate. That's the real upside, which is why the headline fee can stay this low.
The monthly fee is a step, not a slope: nothing at all until a book is worth charging for, then flat. It does not scale with your balance, so a bigger allocation does not cost more to hold. Two other things sit outside this line and neither is drawn here because neither is a function of size: 15% of net realised profit, invoiced by contract rather than withdrawn from your exchange account, and the maker rebates the venue pays us on the volume your book generates. That third one is the reason the line above can stay flat.
Run it yourself, or hand us the mandate and we'll operate it.