The harness bridging elite human and agentic discretionary trading
You bring the read — the regime, the catalyst, the reason this trade and not the next one. The agent brings what discretion is worst at: sizing off a real invalidation, limits that hold when you want them not to, and an execution that never flinches. Same door, same rules, both of you.
Nothing is sized without a level that ends it.
Risk caps and a drawdown lockout bind the agent exactly as they bind you. A stop can be tightened, never widened — by either of you.
Why a harness
After losing to Deep Blue in 1997, Kasparov did not conclude that the machine had won. He started running tournaments where a person and an engine played as one side, and the result was the interesting part: the winners were not grandmasters, and they were not supercomputers. They were ordinary players with machines and, above all, a better process for working together.
The engine removed the blunders — the missed tactic, the oversight under time pressure. The human kept what an engine has no opinion about: which position is worth steering toward. Trading has the same division, and the same failure mode. Discretion is where the edge comes from, and discipline is where it goes to die.
Macro narrative, catalyst timing, regime awareness. Which trade, and why this one rather than the next. The part that does not reduce to a rule, and the reason a discretionary trader exists at all.
Sizing off a real invalidation, hard risk caps, a drawdown lockout, and execution across Hyperliquid and Lighter that does not hesitate. The part a person does worst at exactly the moment it matters most.
The agent is not here to replace your discretion. It is here to make your discretion survive contact with a live book.
The loop
Every setup starts at its invalidation — the price that ends the idea. Nothing is sized without one. You can add a soft invalidation short of it, a target, and a time limit, all of which raise an alert rather than an order.
Not a position size, not a leverage figure — the amount you accept losing if the stop is hit. Notional and leverage are solved from that and the invalidation distance, with liquidation kept clear of your stop.
The entry is chased as a limit and crossed if it times out. From there you can trail and tighten by hand, or leave it to an agent that reads the same levels and argues its case before touching anything.
What it holds
A journal that never places an order, and a desk that does. Same review, same notes, same agent — one of them just has a venue behind it.
Several positions on one market, each with its own invalidation, its own risk and its own alerts. Nothing is netted into a single blurred exposure.
Per-trade and portfolio risk caps, a drawdown lockout that blocks new entries, and a stop that can be tightened but never widened.
Soft invalidations, targets and time limits open a thread for the agent to look at — so a manual trade can still be supervised.
Harness
