Minecraft plugin FastLogin

🔌 About FastLogin

FastLogin — is a Minecraft plugin that automatically detects paid (premium) Minecraft accounts and lets premium players skip offline‑mode authentication (auto‑login). FastLogin solves the friction of premium players re‑authenticating on networks that run servers in offline mode and integrates with existing authentication plugins to perform seamless auto‑login on backend servers and proxies. FastLogin is commonly used on BungeeCord/Velocity networks and Spigot/Paper backends.

🎯 Purpose

FastLogin addresses the problem of having to manually enter passwords on offline‑mode servers for players who own a premium Mojang/Microsoft account. By verifying ownership via Mojang session APIs and premium UUID lookup, FastLogin can automatically mark a connecting player as premium and forward login data to the auth plugin so the player does not need to type a password. FastLogin is designed for authentication/auto‑login on proxy networks and single servers running in offline mode.

⚙ Main features

• Detects premium accounts and performs automatic login for premium players.
• Premium UUID support and auto‑register for premium players.
• Integration with multiple auth plugins (AuthMe, AdvancedLogin, CrazyLogin, LoginSecurity, UserLogin, etc.).
• Proxy support: BungeeCord/Waterfall and Velocity (install on proxy and backend as documented).
• PlaceholderAPI support on Spigot (exports %fastlogin_status%).
• Forwards skins and updates username changes when detected.
• Uses async operations for good performance and minimal blocking. ()

🧩 Who it fits

FastLogin is suitable for:

• Networks using a proxy (BungeeCord, Waterfall, Velocity) with offline backend servers.
• Administrators who want premium players to bypass manual auth on offline‑mode servers.
• Servers that already use an auth plugin (AuthMe, AdvancedLogin, CrazyLogin, etc.).

FastLogin is not an authentication plugin by itself; it must be used together with an auth plugin. ()

🏗 Usage examples

• On a BungeeCord network with offline backend servers, install FastLogin on both proxy and backends and register allowed proxies so premium players auto‑login without entering passwords.
• Use FastLogin together with AuthMe to allow Mojang‑verified players to skip password entry while keeping cracked players on manual login.
• Enable PlaceholderAPI on a Spigot backend to display %fastlogin_status% in formats or GUIs. ()

⌨️ Commands

Commands and permission nodes are taken from the official repository README. Use only the confirmed commands above. ()

🔐 Permissions

Note: the repository documents these permission nodes but does not provide explicit default values in the README; the table above uses the typical administrative default (op) where defaults were not specified. Do not assume different defaults without checking plugin.yml in your installed build. ()

⚙ Installation

📥 Install

• Download the FastLogin build appropriate for your server (official GitHub release or Spigot resource).
• Place the FastLogin .jar into your server's plugins/ folder (proxy and/or backend as needed).
• Install required protocol plugin(s) (see Dependencies).
• Restart the server (full restart; do not use /reload).
• After first launch, check the server console for FastLogin startup messages and generated files. ()

📦 Dependencies

• An authentication plugin (required) — e.g., AuthMe, AdvancedLogin, CrazyLogin, LoginSecurity, UserLogin, etc. (FastLogin integrates with auth plugins.)
• Protocol plugin: ProtocolLib (development build above 720 suggested) or ProtocolSupport (depending on server version and configuration). The README indicates one of these is required to intercept login packets on Spigot/Paper backends. ()
• PlaceholderAPI (optional) — for %fastlogin_status% placeholders on Spigot.
• For proxy setups: BungeeCord/Waterfall or Velocity on the proxy layer; install FastLogin components accordingly. ()

🧾 Configuration

• FastLogin creates its plugin folder on first run. The README specifically mentions an allowed-proxies.txt file generated for proxy setups.
• Configuration details (config files and options) are provided in the repository and generated files; inspect the created folder after first start. The README documents proxy activation steps and the allowed-proxies.txt usage. ()
• Database: the README does not document external database (MySQL/SQLite) requirements for normal operation; no explicit DB dependency is stated in the README. If your customized build or fork adds DB support, consult that fork's documentation.

🧠 Additional information

Network requests

FastLogin performs network requests to Mojang endpoints to verify premium accounts and UUID/session ownership (Mojang APIs such as api.mojang.com and sessionserver.mojang.com). Ensure your server has outbound access to these services if you want premium detection to work. ()

Known compatibility notes / conflicts

• FastLogin requires either ProtocolLib (specific dev build) or ProtocolSupport for certain server setups; using the wrong or incompatible protocol plugin may break auto‑login. ()
• In proxy networks, FastLogin must be configured for proxy support (allowed proxies) and installed on proxy and backend as documented. Misconfiguration of allowed proxies may prevent auto‑login.
• FastLogin is not an auth plugin and must be paired with a supported authentication plugin.

FAQ

Q: Can I run FastLogin on a single offline server without a proxy? A: Yes — FastLogin supports Spigot/Paper backends in offline mode when paired with a supported auth plugin and the required protocol plugin (ProtocolLib or ProtocolSupport). ()

Q: Does FastLogin forward skins for premium players and support Floodgate (Bedrock)? A: The project states it forwards skins and has support for Floodgate (for Bedrock players) in compatible setups; check your build's docs and test Floodgate interaction. ()

Q: Is FastLogin a replacement for AuthMe or other auth plugins? A: No — FastLogin is an auto‑login addon that detects premium accounts and coordinates with auth plugins; you still need a dedicated auth plugin for handling cracked players, passwords and session locking. ()

Q: Does FastLogin collect metrics (bStats) or offer Discord support? A: The README does not mention bStats or an official Discord server. No official metrics/Discord information is present in the primary repository README. (Information absent in official sources.)

Support & issues

• Official support channels and issue tracker are the GitHub repository (issues and discussions). Use the repo to report bugs, request features or check compatibility notes. ()

✅ When FastLogin is useful

If your network runs backend servers in offline mode (for example to allow cracked players) but you want legitimate premium players to join without typing a password, FastLogin provides a performant auto‑login bridge. FastLogin integrates with auth plugins, supports proxies (BungeeCord/Velocity), and is focused on keeping premium login seamless while preserving existing auth flows. ()