How to Design an EA That Survives Prop Firm Rules
Most EAs fail prop firm challenges in the first week. Learn how to build a prop firm safe EA that respects daily DD caps, news rules, and position limits.
Read →Nebula · journal
Trading tools
Why Most EAs Fail in Live Trading (And How to Avoid It)
Discover the real reasons why EAs fail in live trading-overfitting, bad backtest conditions, regime shifts-and get a practical diagnosis checklist to fix it.
Read →Regime Detection: Making EAs Aware of Market Conditions
Most EAs fail because they ignore market conditions. Learn how regime detection trading keeps your algo on the right side of trend, range, and volatility shi...
Read →The Kelly Criterion for Traders: Useful or Dangerous?
Kelly criterion trading explained without the hype. Learn the formula, why full Kelly destroys accounts, and how fractional Kelly makes it practical.
Read →Equity Curve Analysis: Reading Beyond Net Profit
Stop judging strategies by net profit alone. Learn equity curve analysis to spot slope breaks, drawdown risk, and regime failures before they cost you.
Read →Out-of-Sample Testing: The Step Most Backtests Skip
Most backtests look great until live trading begins. Learn how out-of-sample testing reveals whether your edge is real before you risk a dollar.
Read →How to Model Spread Realistically in Backtests
Most backtests lie about spread. Learn how to model spread realistically so your results actually survive live trading. Spread modeling backtest guide.
Read →Why Genetic Algorithms Beat Grid Search for Strategy Optimization
Grid search collapses under too many parameters. Learn how genetic algorithm trading finds better strategy optima with a fraction of the compute cost.
Read →Monte Carlo Simulation for Trading Systems: What It Reveals
Monte Carlo trading analysis exposes fragile systems that backtest well by luck. Learn how simulation reveals true drawdown risk and robustness.
Read →Walk-Forward Analysis: The Honest Way to Test a Strategy
Stop trusting curve-fitted backtests. Walk-forward analysis shows whether your strategy holds up on data it has never seen. Here is how to do it right.
Read →How to Handle a Losing Streak Without Blowing Up
Ten losses in a row can happen to any profitable trader. Learn how to handle a losing streak with discipline, reduced size, and clear stopping rules.
Read →What to Track in a Trading Journal (And What to Skip)
Stop tracking the wrong things. Learn which fields actually improve your trading journal, and how a weekly review turns raw data into real edge.
Read →Get started
Put a tested system on your own MetaTrader.
Nebula searches, stress-tests and grades trading systems on your own machine - then deploys the survivors to MT4 or MT5. The free tier is the full engine, forever.
Or browse the ready-made systems library →
- Free tier, no card - build, test and make one real deploy before you pay anything
- Runs on your own PC or Mac - your MT4/MT5 account stays with your broker
- 14-day cooling-off on any purchase before activation, in line with UK consumer law
- A real person answers - Ross, the founder, via contact or Discord
- Real reviews - Nebula on Trustpilot
Reviews on Trustpilot: Nebula & tools (Orion RFX) · private mentoring (Pip Surfing Society) · Trading carries risk; past performance does not guarantee future results.