MQL5-Python Translation Workspace Skill

Seamless MQL5 indicator translation to Python with autonomous validation and self-correction.

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Self-Evolving Skill: This skill improves through use. If instructions are wrong, parameters drifted, or a workaround was needed — fix this file immediately, don't defer. Only update for real, reproducible issues.

When to Use This Skill

Use this skill when the user wants to:

• Export market data or indicator values from MetaTrader 5
• Translate MQL5 indicators to Python implementations
• Validate Python indicator accuracy against MQL5 reference
• Understand MQL5-Python workflow capabilities and limitations
• Troubleshoot common translation issues

Activation Phrases: "MQL5", "MetaTrader", "indicator translation", "Python validation", "export data", "mql5-crossover workspace"

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Core Mission

Main Theme: Make MQL5-Python translation as seamless as possible through:

1. Autonomous workflows (headless export, CLI compilation, automated validation)
2. Validation-driven iteration (>=0.999 correlation gates all work)
3. Self-correction (documented failures prevent future mistakes)
4. Clear boundaries (what works vs what doesn't, with alternatives)

Project Root:

~/Library/Application Support/CrossOver/Bottles/MetaTrader 5/drive_c

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Workspace Capabilities Matrix

WHAT THIS WORKSPACE CAN DO

1. Automated Headless Market Data Export (v3.0.0)

Status: PRODUCTION (0.999920 correlation validated)

What It Does:

• Fetches OHLCV data + built-in indicators (RSI, SMA) from any symbol/timeframe
• True headless via Wine Python + MetaTrader5 API
• No GUI initialization required (cold start supported)
• Execution time: 6-8 seconds for 5000 bars

Command Example:

CX_BOTTLE="MetaTrader 5" \
WINEPREFIX="$HOME/Library/Application Support/CrossOver/Bottles/MetaTrader 5" \
wine "C:\\Program Files\\Python312\\python.exe" \
  "C:\\users\\crossover\\export_aligned.py" \
  --symbol EURUSD --period M1 --bars 5000

Use When: User needs automated market data exports without GUI interaction

Limitations: Cannot access custom indicator buffers (API restriction)

Reference:

/docs/guides/WINE_PYTHON_EXECUTION.md

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Reference Documentation

For detailed information, see:

• Capabilities Detailed - In-depth capability documentation
• Complete Workflows - End-to-end user workflows
• Troubleshooting & Errors - Requirements, assumptions, error patterns
• Validation Metrics - Success metrics and version history

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Troubleshooting

Issue	Cause	Solution
Wine Python not found	CrossOver/Wine not installed	Install CrossOver, verify bottle path
MT5 API connection failed	MetaTrader not running	Launch MetaTrader 5 before running export
Correlation below 0.999	Indicator mismatch	Verify warmup periods, check calculation alignment
Custom indicator not working	API restriction	Use CSV export from MT5, not Python API
UnicodeDecodeError	Windows path encoding	Use raw strings for Windows paths in Wine
Symbol not found	Wrong symbol format	Use exact MT5 symbol name (e.g., EURUSD not EUR/USD)
Timeout on export	Too many bars requested	Reduce bar count, default 5000 is safe
Permission denied	Wine prefix incorrect	Set WINEPREFIX to correct CrossOver bottle path

Post-Execution Reflection

After this skill completes, check before closing:

1. Did the command succeed? — If not, fix the instruction or error table that caused the failure.
2. Did parameters or output change? — If the underlying tool's interface drifted, update Usage examples and Parameters table to match.
3. Was a workaround needed? — If you had to improvise (different flags, extra steps), update this SKILL.md so the next invocation doesn't need the same workaround.

Only update if the issue is real and reproducible — not speculative.