Over the past few months, I’ve made more than 20 videos on YouTube showing how I use AI tools like ChatGPT and Claude to code MT5 Expert Advisors. Along the way, I’ve learned a lot — not just about coding, but about how to work with AI effectively. Here are my top five best practices that I follow now.
1. Treat AI Like a Partner, Not a Replacement
When I first started, I was tempted to let AI do everything — generate the entire EA in one go. That’s a trap. I’ve learned that AI is most useful when it’s a partner. I guide it, review every line, and make sure I understand how it works. That way, I get the speed of AI without sacrificing control or safety.
2. Be Extremely Specific in Your Prompts
I’ve noticed a huge difference depending on how I phrase my questions. Vague prompts like “make a moving average EA” give generic, often messy results. But when I say something like, “Generate an MT5 EA in MQL5 that opens a long trade when the 50 EMA crosses above the 200 EMA, with ATR-based stop loss and partial take profit,” the output is almost ready to test.
3. Break the EA Into Modules
I don’t ask AI to code the whole EA at once anymore. I break it down: indicators, signal logic, risk management, trade execution, logging. AI handles each part faster, and I can test them individually before putting everything together. It saves me from debugging huge, messy code blocks.
4. Always Test and Optimize
Even when AI generates clean code, it’s never perfect. I spend time running each snippet in MT5’s strategy tester, checking logs, and tweaking inefficiencies. A few extra minutes here prevents headaches later in live trading — and I’ve learned that performance matters, especially when running multiple EAs at once.
5. Keep Improving Your Prompts and Skills
The more I code and experiment, the better my AI prompts get. I’ve realized this is a two-way street: my knowledge helps AI give better results, and AI helps me code faster and explore new ideas. Over time, the combination has made my EAs more sophisticated and reliable.
Conclusion
Using AI to code MT5 EAs has been a game changer for me. But it only works if you use it thoughtfully: guide it, test it, and treat it like a partner, not a magic wand. After 20+ videos and countless coding sessions, I’ve learned that the best results come from combining human judgment with AI speed.
The Nomad Trader 
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