AuthWeave

AuthWeave — Per-Server Login Profiles is a standalone, client-side Minecraft mod for assigning a different identity to every saved multiplayer server. It has no dependency on Auth Me, ViaFabricPlus, Fabric API, or another authentication mod.

Features

• Official Microsoft, offline, and custom Yggdrasil identities per saved server.
• Third-party skins, capes, and elytra textures through the selected Yggdrasil session service.
• Login settings integrated into Minecraft's add/edit server screen.
• Credentials stored with that vanilla server entry in servers.dat, so launcher personal-data export behavior is predictable.
• Optional clear-text password storage guarded by a vanilla-style full-screen warning. Passwords are omitted by default; access tokens are stored to support automatic reconnects.
• English and Simplified Chinese language files, with no fixed user-interface prose embedded in Java code.
• No authentication, disk access, or version detection on the repeated-connect hot path.

Supported versions

Every official Java Edition release from 1.21 through 26.2 is built separately for Fabric and NeoForge. See the version matrix for exact loader versions and beta-channel notes.

PCL CE users can follow the Chinese manual regression checklist.

Install the jar matching both the exact Minecraft version and mod loader. No additional mod dependency is required.

Security

The saved server entry contains an access token. If clear-text password storage is enabled, it also contains the password. Launchers may include servers.dat when exporting saved servers or personal game data. Inspect exports before sharing them and never publish unredacted servers.dat, logs, or crash archives.

Authentication requests do not follow redirects. Fixed error messages are local language keys; arbitrary HTTP response bodies are not copied into the UI or logs.

Building

Build the default 26.2 target:

.\gradlew.bat clean build

Build one configured target:

.\gradlew.bat clean build -Ptarget_version=1.21.11

Build and collect the complete matrix under dist/<minecraft-version>:

.\scripts\build-matrix.ps1

The project is licensed under MIT. Contributions must be clean-room work compatible with that license.