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Restart-Safe EA Template - no duplicate entries after a restart - expert for MetaTrader 5

Jefry Francisco Rodriguez Campos
Jefry Francisco Rodriguez Campos

Jefry Francisco Rodriguez Campos

MQL4/MQL5 developer - Expert Advisors, indicators and strategy validation
I build clean, well-tested Expert Advisors and indicators for MetaTrader 4 and 5, with a focus on rule-based strategies and solid risk management.
What I can do for you:
10 codes
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111
Rating:
(1)
Published:
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Restart-Safe EA Template is a clean Expert Advisor skeleton that shows execution practices many EAs miss. The most common problem it solves: after MetaTrader or the VPS restarts, the EA sees the same signal again and opens a duplicate trade.

  • Signals are evaluated only on closed bars and only once per bar.
  • The last processed bar is stored in a terminal global variable, so a restart never repeats a signal.
  • One position per symbol and magic number, recognised again after a restart.
  • Spread filter, broker stop-level check and volume normalisation.
  • Every decision (entry sent, signal skipped and why, broker retcode) is written to the Experts log.

The included signal is a simple moving-average cross for demonstration only: replace the GetSignal() function with your own rules. This is an educational template, not a profitable strategy. Suggested for testing: EURUSD M15.

Inputs

  • Fast and slow MA periods and MA method (demo signal).
  • Lot size, stop loss and take profit in points (0 = none).
  • Maximum spread in points, magic number and maximum deviation.

Screenshot: Experts log in the Strategy Tester showing entries and skipped signals with their reason.

Experts log of the Restart-Safe EA Template in the Strategy Tester

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