How to Build an MT5 Expert Advisor with ChatGPT Full MQL5 EA Code + Prompts

In this full tutorial, we show how to build a MetaTrader 5 (MT5) Expert Advisor (EA) using structured AI prompts, debug the code, and backtest it to discover the best strategy settings.

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This video walks through every step, from preparing ChatGPT to write MQL5, to generating a clean trading algorithm that compiles and runs without error.
If you’ve ever wanted to use AI to code your own trading bots, this guide gives you the entire workflow.
You’ll see the exact prompts, how to fix errors, and how to use MT5’s built-in optimization tools to find the best parameters for your EA.
Everything is explained in a clear, professional format so traders, developers, and beginners can follow along and start building their own automated trading systems.

🕒 Timestamps
0:00 – ChatGPT Trading Algo MT5 EA
0:47 – Prompt 1: Preparing the AI for MQL5 code generation
3:28 – Prompt 2: Writing the trading strategy and MT5 Expert Advisor logic
4:22 – Handling compile and copy errors
4:53 – Prompt 3: Feeding errors back into ChatGPT
8:19 – Deep thought prompt that generated code with zero errors
9:12 – Running the ChatGPT EA in the MT5 Strategy Tester
12:04 – Converting fixed profit targets into percentage-based equity targets
15:05 – Bonus prompt idea for strategy variations
17:07 – Initial backtest results and analysis
17:39 – How to optimize an EA in MT5
18:23 – One-pass optimization for the best settings
18:35 – Essential MT5 backtesting and optimization tip
19:44 – Final EA optimization results

💡 What You’ll Learn
• How to use ChatGPT to create a fully functional MT5 trading bot (EA)
• The right prompts to guide ChatGPT’s MQL5 code generation
• How to fix and refine EA code automatically using error feedback
• How to run accurate backtests in the MT5 Strategy Tester
• Turning fixed targets into percentage-based trade management
• Performing single-pass EA optimization to find the best parameters
• Building your own AI-assisted workflow for algorithmic trading development
By the end of this video, you’ll understand how to communicate effectively with ChatGPT to produce clean, working MQL5 code, and how to transform trading ideas into automated systems ready for live or demo testing.

⚙️ Tools Used
• MetaTrader 5 (MQL5 language)
• ChatGPT (GPT-5 model)
• MT5 Strategy Tester and Optimization Engine
• Code prompts, debug feedback, and testing sequences

📈 Why This Matters
Algorithmic trading is no longer reserved for developers, AI has made it accessible to anyone with a trading concept.
Using ChatGPT, traders can save hours of manual coding and eliminate guesswork in the learning process.
Whether you trade indices like GER40 (DAX), US30, or currency pairs, you can apply the same method to test strategies, refine entry conditions, and create smarter risk-based systems.
This workflow bridges the gap between trading intuition and code execution, empowering you to experiment, learn, and evolve faster than ever before.

🌐 Resources & Downloads
Full prompt scripts and example code can be found at:
👉 https://globalfinancetrading.com/trad...

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• Free tutorials on algorithmic trading and coding
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👥 Who This Is For
• Traders who want to automate their strategies using MQL5
• Developers exploring AI-assisted trading systems
• Prop firm traders (FTMO, Apex, MFF, etc.) wanting consistency
• Investors interested in AI, quantitative methods, and automated analysis

📊 About Global Finance Trading
Global Finance Trading produces educational content to help traders and developers learn about algorithmic trading, MQL5 development, and AI-powered trading tools.
Our focus is on strategy logic, coding, and market understanding, not results, profits, or performance claims.
Subscribe for deep dives into algorithmic strategies, trading psychology, and automated system design.

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