Let's Auth

A secure and lightweight authentication plugin for PaperMC servers, built as a modern alternative to AuthMe.

Features

• Full player registration, login, password change, and account unregister system
• BCrypt password encryption for maximum security
• Anti-brute force protection to block repeated failed login attempts
• Blocks unauthorized actions (chat, commands, movement) before login
• Automatic session retention to keep players logged in
• Built-in database support: Two options available, SQLite or H2. You can pick one manually, or leave it unchanged to use the default database. No external database installation is required.
• Minimal performance impact on TPS and memory usage

Why use this plugin?

• Designed specifically for Paper 1.21.x with native support
• Drop-and-play installation, no complex setup or dependencies
• Embedded database runs out of the box, no extra service needed
• Optimized for both small private servers and large public servers
• Clean, maintainable codebase with active updates

Installation

1. Place the .jar file in your server's plugins folder
2. Start the server once to generate the config file
3. Open config.yml: select SQLite or H2, or keep the default setting
4. Restart the server to apply changes

Compatibility

• Minecraft: Java Edition 1.21.x
• Platform: PaperMC