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Requirements

• Windows 10 or 11, 64-bit. A VPS works as long as the desktop stays signed in and unlocked.
• NinjaTrader 8 Desktop, 8.1.x, installed and licensed by you (Help > About shows the version).
• Python 3.10 or newer. The installer checks and prints the exact install command if it is missing.
• A live market-data connection, if you will use Protect. Protect will not enable your strategy while a configured connection is Simulated or Playback, even when you test on Sim101, NinjaTrader’s practice account, and autopilot doctor reports it as a failure. Watch and the Safety Scan only read NinjaTrader’s logs.
• NinjaTrader settings: Tools > Options > Strategies > NinjaScript, tick both Cancel entry orders when a strategy is disabled and Cancel exit orders when a strategy is disabled; and Tools > Options > Automated trading interface, tick AT Interface.
• One strategy row on one account in the Control Center Strategies tab, saved in your workspace. This version runs one strategy on one account per PC; support for more is being built.

What the install does not do

• It does not change your strategy’s code or your NinjaTrader settings. The settings above stay yours to tick.
• It never stores a password unless you choose the username/password sign-in, and then only in Windows Credential Manager on your PC.
• It sends no trading data to us. Alerts go only to the Telegram chat or Discord webhook you set up. Licence checks send your licence key, a hashed machine id and the StopWarden version, and every install asks our server once a day whether a newer version exists.

The table on the home page lists every case in which StopWarden attempts to close a position or to cancel an order, and the docs have the detail.