Gamerulify

Gamerulify is a server-side mod that adds a lot of game rules that allow the server administrator to configure their server on the fly.

See the wiki for a full list of all custom game rules.

This mod allows toggling rcon, query, and status threads, while the server is running.

You can also change max player count, server resource pack, motd, spawn protection size, command blocks, pvp, view distance, creeper griefing, and a lot more without requiring a server restart.