Rcon client for Minecraft
There's no easy answer to this. To do what you're looking to do, you're gonna need to write some code, either a separate plugin that hooks into their API (if they have one), a custom version of that plugin built from source with your own changes (if their code is available publicly), or otherwise some clever business with some sort of external tools (maybe mcrcon?) and some scripting language like bash or python.
Automatic restart for Minecraft server
1 project | reddit.com/r/Minecraft | 14 Feb 2022
[HELP] Searching a server-sided Chunk Loader for Fabric 1.17.1 server
3 projects | reddit.com/r/technicalminecraft | 20 Aug 2021
Web-based (PHP) DataPack Manager - Permits upload, enable, disable, and delete of DataPacks
1 project | reddit.com/r/admincraft | 15 Aug 2021
accessing server terminal (home hosting)
1 project | reddit.com/r/admincraft | 12 Jun 2021
How do I get back to the same terminal when I exit an SSH connection?
1 project | reddit.com/r/linux4noobs | 29 Dec 2020