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Librerie

Simple License - lock your EA to accounts, expiry date, demo-only or server - libreria per MetaTrader 5

Augusto Martin D'anna
Augusto Martin D'anna

Augusto Martin D'anna

MQL5 & Pine Script developer | Trader since 2019 | Strategy validation
As a trader, I know a bot is only as good as the logic behind it. I bridge
trading concepts and clean code: I don't just follow instructions, I make
sure your EA behaves exactly the way your strategy intends.
5 codici
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SimpleLicense.mqh is a small include file to protect EAs and indicators you sell or share privately. You set the allowed accounts and the expiry date, compile, and give your customer only the .ex5. If the account, date, account type or server do not match, the program shows the reason and its logic does not run.

What it checks

  • Allowed accounts - a comma-separated list of account numbers (empty = any account).
  • Expiry date - the program stops working after this date (0 = never).
  • Demo only - useful for trial versions: it refuses to run on real accounts.
  • Server filter - part of the broker server name, e.g. "FTMO" (empty = any server).

The check runs in OnInit and again once per hour (once per minute while invalid), so an expiry date or an account switch is detected without restarting the terminal. The alert with the reason is shown once, not on every tick.

How to use it

  • Copy SimpleLicense.mqh next to your EA (or into MQL5\Include) and add #include "SimpleLicense.mqh".
  • Declare CSimpleLicense lic; and in OnInit call AllowAccounts(), SetExpiry(), DemoOnly() and AllowServer() as needed, then if(!lic.Check()) return INIT_FAILED;
  • At the start of OnTick (or OnCalculate) add if(!lic.IsValid()) return;
  • LicenseDemoEA.mq5 shows the complete pattern: edit the four #define lines per customer and compile.

Limits

  • The values are compiled into the .ex5, so you build one file per customer and never share the source.
  • This stops casual sharing between traders. It is not protection against a determined cracker; for paid products with automatic licensing, the MQL5 Market is the stronger option.
  • Checks use the terminal's account information and server time.
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