beaconauth
Secure web, OAuth, and passkey authentication for Minecraft servers using the BeaconAuth mod and a self-hosted auth server.
About this Mod
BeaconAuth adds a secure sign-in layer for Minecraft communities. It connects a Minecraft server to a self-hosted BeaconAuth web service, allowing server owners to require web-based authentication for modded clients while keeping account verification clear, configurable, and under their own control.
Features
- Web-based Minecraft login flow
- OAuth and passkey support through the BeaconAuth server
- Signed session verification with JWT and JWKS
- Configurable server-side authentication behavior
- Support for community-managed BeaconAuth accounts
- Localized client messages
- No third-party analytics, advertising, telemetry, or external file downloads in the Minecraft mod
How it works
When a player joins a server that uses BeaconAuth, the mod can open the configured BeaconAuth login page in the player’s browser. After the login is completed, the mod returns a signed authentication result to the Minecraft server, where it is verified against the configured BeaconAuth server keys.
Server owners host and configure their own BeaconAuth server URL.
Supported versions
| Minecraft version | Fabric | Forge | NeoForge |
|---|---|---|---|
| 1.20.1 | Yes | Yes | No |
| 1.21.1 | Yes | No | Yes |
| 1.21.8 | Yes | No | Yes |
Install the jar that matches your Minecraft version and loader from the Files tab.
Privacy and network usage
The Minecraft mod connects to the BeaconAuth server configured by the server owner during the login flow. It does not include ads, analytics, telemetry, or background file downloads.
The client may open the configured BeaconAuth web page in the player’s browser and use a temporary local callback listener to complete the login flow.
Server owners are responsible for their own BeaconAuth deployment, logs, OAuth provider configuration, and community privacy notice.
License
BeaconAuth is licensed under the MIT License.
Available Versions
How to Install beaconauth on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).
Install Mod
Open the mod browser in the dashboard and search for "beaconauth". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.8, 1.21.1, 1.20.1 (+1 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
beaconauth server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.
Is beaconauth compatible with fabric and forge and neoforge?
beaconauth officially supports fabric, forge, neoforge for Minecraft 1.21.8, 1.21.1, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with beaconauth – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if beaconauth consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install beaconauth with just one click on your server.