position size safety coach

The problem

Traders often struggle to maintain consistent risk across different asset classes due to varying multipliers, lot sizes, and tick values. Calculating position sizes manually leads to rounding errors that exceed account risk limits, potentially causing catastrophic drawdowns.

What it does

• Calculates exact position sizes for stocks, futures, forex, options, and crypto based on a fixed risk-per-trade model.
• Handles complex instrument specifications including futures point values, forex pip values, and option multipliers.
• Enforces a strict round-down policy to ensure the actual dollar risk never exceeds the user's defined account percentage.
• Validates risk parameters against account equity to prevent over-leveraging in volatile markets.

Why this beats prompting it yourself

General LLMs often hallucinate contract multipliers or fail to apply the specific rounding logic required for financial safety. This skill uses a standardized mathematical procedure that treats every asset class with the same risk-first priority, eliminating the math fatigue that leads to execution errors.

Use cases

• Calculate the number of E-mini S&P 500 contracts to trade based on a 15-point stop and 1% risk.
• Determine the correct lot size for a EURUSD trade using pip-based stop distances.
• Size crypto spot or perpetual futures positions while accounting for contract multipliers.
• Determine how many US equity option contracts to buy based on a specific premium stop loss.

Known limitations

Requires users to provide the specific tick or pip value for their broker. Does not account for slippage or execution commissions in the core risk calculation.