AuthAnvil

🔐 AuthAnvil · Anvil Authentication

A zero-dependency, pure Bukkit login plugin that turns the vanilla anvil GUI into a sleek authentication interface. Offline and premium players share the same clean workflow — no chat commands, no extra setup.

Why AuthAnvil?

Zero Dependencies：No ProtocolLib, no external plugins. Runs on any Spigot/Paper server.

Anvil as UI：Players type their password directly into the anvil input field — just like renaming an item.

Two-Step Registration：Passwords must be entered twice to prevent typos during initial setup.

Premium Auto-Login：Optionally verify premium players via Mojang or LittleSkin API and let them in automatically.

OP Bypass：Allow administrators to skip login entirely.

Custom Command Slot：The middle anvil slot executes any command you configure — help menus, teleports, announcements, and more.

Session Persistence：Returning players skip login within a configurable time window.

Anti-ESC Close：The GUI reopens instantly when closed, so login cannot be avoided.

Hot Reload：Change settings in config.yml and apply them with /authanvil reload — no restart required.

Fully Configurable：Every message, sound, password rule, and timeout lives in config.yml.

1-Minute Setup

Drop AuthAnvil-2.0.0.jar into your plugins folder.

Start the server to generate plugins/AuthAnvil/config.yml.

Edit the config to fit your needs.

Run /authanvil reload to apply changes.