MQL Professional Developer

What it does

This skill provides a comprehensive framework for developing, debugging, and architecting trading automation tools on MetaTrader 4 (MQL4) and MetaTrader 5 (MQL5) platforms. It transforms the agent into a professional MQL developer capable of handling the full lifecycle of trading software.

When to use it

Use this skill when you need to write Expert Advisors (EAs), create custom technical indicators, build graphical user panels, or manage complex trading operations like risk management and trailing stops. It is also essential for MQL4 to MQL5 migration and integrating MetaTrader with external REST APIs via WebRequest.

What's included

• Instructions: Detailed guides on EA and indicator creation, core workflow patterns, and critical 'gotchas' (such as double comparison and 4/5 digit broker handling).
• Reference Material: Extensive documentation on MQL4/5 syntax, OOP features, architecture patterns (State Machine, Singleton), and backtesting methodologies (Walk-forward, Monte Carlo).

Compatible agents

Optimized for Claude Code and other high-reasoning LLM agents capable of complex C++-like coding tasks.