CauthonAuth
A easy to use login and register plugin for servers ..No need to login everytime as long as your ip is the same!
⬇ Download on ModrinthPlayers can register with /register and log in with /login
Authentication is tied to UUIDs and optionally associated with IP addresses.
Players are given a configurable amount of time to log in after joining. Failure to log in results in a kick.
Players are automatically logged in if their IP matches the stored IP from their last session.
Players cannot interact with the environment (e.g., chat, move, place/break blocks) unless authenticated.
Restricts the number of accounts that can be registered from a single IP address (configurable).
Supports configuration via config.yml and persistent player data storage in playerdata.yml.
config.yml:
settings:
login-timeout-seconds: 60 # Time in seconds before unauthenticated players are kicked.
max-accounts-per-ip: 3 # Maximum number of accounts that can be registered from a single IP.
Check https://github.com/KanemotoYamatoMaaku/CauthonAuth/blob/main/LICENSE for usage license.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.1, 1.20.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as CauthonAuth-1.0-SNAPSHOT.jar — drop this file into the mods folder
- Download size: 11 KB
- Download link checked 6 Sept 2026 — working
These come from our own check of the pack file, not from the source page.