Bullion Bill — Gold (XAU/USD) Signal Desk (Python)

'Bullion Bill' is the Gold (XAU/USD) desk from the Synthetic Capital / Charting the Rubicon AI Agents Fund — isolated into a single standalone Python script you can run yourself. It reproduces the exact decision the fund's Bullion Bill desk makes.

What it does

Bill is the fund's purest trend trader. Using Donchian channel breakouts on hourly gold, he goes long on a new 20-bar high and short on a new 10-bar low — no oscillators, just price making new extremes — and rides trends for an average of about a day. Each run reads real gold candles and prints the desk's current call — LONG, SHORT, or FLAT — with entry, an ATR-based stop, and a 0–1 conviction score, as of the last completed candle.

Signal only. The script never places an order and never touches your account.

What's included

• bullion_bill_gold.py — the self-contained desk script (only dependencies: requests, pandas, numpy)
• SETUP_GUIDE — a plain-English, step-by-step setup guide for non-coders

Requirements

• Python 3 and pip install requests pandas numpy
• A free OANDA practice API token (read-only pricing)

Historical backtest — zero-fee paper model on real prices

• Archetype: Donchian breakout · 1-hour · 720-day OANDA history
• Net return +47.1% · Sharpe 1.17 · Max drawdown −16.0% · Win rate 42.1% · 4 of 4 positive walk-forward folds

A sub-50% win rate with a strongly positive return is the signature of trend-following: many small losers, fewer but much larger winners.

Important: These figures are a zero-fee, zero-slippage paper model on historical data. They are not a forecast and not a promise of profit — live spread, commissions, and slippage will reduce results. This is a research tool, not financial advice. Past performance does not indicate future results, and you are responsible for any trading decisions you make.