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Rayfield Gen2 is out NewA ground-up rebuild — faster, undetectable by design, and actively developed. Use it for new scripts instead of Rayfield (2022).Read the Gen2 docs Sentivel Endorsed by RayfieldStatus pages and uptime monitoring for whatever you ship. Free to start.Take a look Rayfield can report whether your script is running. Give your window a Sentivel heartbeat, and Rayfield pings it when the window opens and every five minutes while it stays open. While people are running your script, the monitor stays green. If nobody has it open, the monitor reads idle rather than down.
That’s all you need to add. Rayfield handles the timing, runs every ping in the background, and stops when Rayfield is destroyed. A failed ping never slows down or breaks your script.

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Set it up

1

Create a heartbeat monitor in Sentivel

Sign in to Sentivel (it’s free to start), open Monitors, click Add a monitor, and choose Heartbeat.
2

Set the timing, and choose Show it as idle

Keep the defaults of Every 5 minutes for Expected interval and 1 minute for Grace period, since Rayfield pings every five minutes. Under When pings stop, choose Show it as idle. See When nobody is playing for why.
3

Copy the ping URL

Sentivel gives the monitor a ping URL of the form https://www.sentivel.com/api/heartbeat/<token>. Copy the whole URL. Rayfield needs this link, not the monitor’s ID.
4

Add it to your window

Pass the URL as Heartbeat in CreateWindow.
Add the monitor to a Sentivel status page and link it from your Discord. Players can check whether the script is working before they ask.

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When nobody is playing

Rayfield only pings while someone has your script open, so when nobody is playing, the pings stop just as they would if the script broke. Show it as idle tells Sentivel what that silence means: the monitor reads Idle rather than down, opens no incident, records no downtime, and goes back to operational as soon as someone opens the script again. On your status page the script shows as Idle. Choose Mark it down instead only if someone almost always has the script open and you want to be alerted the moment that stops.

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What to expect

  • Pings last as long as Rayfield. You get one ping when the window opens, after the key system if you use one, then one every five minutes. They stop when you call Rayfield:Destroy() or the script is run again.
  • Studio is skipped. Playtests aren’t real runs, so no ping is sent there. The link is still checked, so a typo shows up while you are building.
  • A bad link warns. If the link isn’t a Sentivel ping URL, Rayfield prints a warning saying what to paste instead and sends nothing. The full URL and the bare token both work, and stray spaces from a paste are fine.
  • An unknown heartbeat stops. If Sentivel keeps saying the heartbeat doesn’t exist, for example because you deleted the monitor or regenerated its URL, Rayfield prints a warning and stops pinging.
  • Only Sentivel. Heartbeat refuses any other host, so it can’t be used to make other requests.
Secure mode silences Rayfield’s console output, including these warnings. Before you ship, run the script once without secure mode and check that the monitor’s page says First ping received.
The ping URL ships inside your script, so anyone who reads the script can use it. Treat the monitor as a signal that people are running your script, not as proof. If the URL is being misused, click Regenerate next to it on the monitor’s page and ship the new one.

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Reference

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string
A CreateWindow setting. The monitor’s ping URL, or just its token. Optional.

Sentivel monitors

Monitor types, thresholds, and maintenance.