What does the Joaquin skill do?

Turn a napkin-sketch trading rule into a risk-managed MT4/MT5 Expert Advisor, then show you exactly where the backtest might be lying. Load it once into Claude Projects and you get a configured MQL Expert Advisor Developer without re-explaining context at the start of every session. This is educational and informational content, not financial advice. Markets involve risk of loss; verify every strategy, calculation, and configuration against your own broker, exchange, and risk tolerance before trading real capital.

How do I install this skill file?

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?

Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.

What is included in this download?

One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. No subscription, yours permanently.

How is this different from using Claude without the Joaquin skill?

Without a skill file your AI starts every session as a general assistant. With Joaquin loaded it applies MQL Expert Advisor Developer methodology from the first message, with consistent quality every time. This is educational and informational content, not financial advice. Markets involve risk of loss; verify every strategy, calculation, and configuration against your own broker, exchange, and risk tolerance before trading real capital.

MQL Expert Advisor Developer AI Skill for Claude & ChatGPT

Name: Joaquin — MQL Expert Advisor Developer AI Skill
Brand: KissMySkills
Availability: InStock

Joaquin — MQL Expert Advisor Developer AI Skill

$34.00

Joaquin — MQL Expert Advisor Developer AI Skill

$34.00

⚡ Instant download ◆ Claude & ChatGPT ∞ Keep forever

Instant download · 30-day money-back guarantee. Pay once, keep forever — no subscription. Refund policy

Turn a napkin-sketch trading rule into a risk-managed MT4/MT5 Expert Advisor, then show you exactly where the backtest might be lying.

Discretionary rules translated into precise, codeable MQL4/MQL5 entry and exit logic
Every EA ships with a stop-loss, position-size cap, and max-daily-loss circuit breaker
Strategy Tester backtests configured with realistic spread, slippage, and execution assumptions
Optimization results validated out-of-sample and checked for curve-fitting before you trust them

Traders and developers turning a manual strategy into an automated MT4/MT5 Expert Advisor, or debugging one that backtests well but loses live.A senior MQL Expert Advisor Developer bills $100+/hr, this is one file, yours forever.

// what's inside

Drop Joaquin into Claude and get a Senior MQL Expert Advisor Developer who codes a rule exactly as specified, then tells you honestly where the backtest is lying to you.

Joaquin covers MQL4/MQL5 strategy translation, risk and position-sizing code, Strategy Tester backtesting and walk-forward validation, optimization without overfitting, multi-timeframe logic, and live-trading hardening.

What you get

→Discretionary rules translated into precise, codeable MQL4/MQL5 entry and exit logic
→Every EA ships with a stop-loss, position-size cap, and max-daily-loss circuit breaker
→Strategy Tester backtests configured with realistic spread, slippage, and execution assumptions
→Optimization results validated out-of-sample and checked for curve-fitting before you trust them

📄 joaquin-mql-ea-developer.skill Under 2 min install Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Joaquin builds the answer. Includes a full worked example so you see exactly what you get.

joaquin-mql-ea-developer.skill

# Joaquin - MQL Expert Advisor Developer

You are Joaquin, a Senior MQL Expert Advisor Developer. Pin down the exact rule before writing a line of code.

## How you work
1. Pin down the exact rule before writing any code
2. Code entry/exit logic first, position sizing second, safety code third
3. Backtest on the Strategy Tester with realistic spread and slippage
4. Optimize sparingly, and validate every result out-of-sample
5. Stress-test for the failure modes backtests hide, then hand back readable code

A backtest that looks too good gets investigated for curve-fitting before it gets celebrated.

Excerpt from the actual file you'll download.

// try it

prompt

$My EA backtests at an 80% win rate but loses money live. What's wrong?

Joaquin checks the Strategy Tester's spread and slippage assumptions first, finds they were left at the flattering defaults, rebuilds the test with broker-realistic execution, and shows the win rate dropping to a number that actually explains the live losses.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot — whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.