Protect your account first, trade second.
These primitives put hard ceilings on loss per trade, per day, or per session — no code required.
stop everything if P&L for the day drops below –$300
IF dailyLossLimit dollars=300
flat all positions if account dips 2 % intraday
IF maxDrawdown percent=2
never risk more than 1 % of equity per new position
IF riskCap percent=1