altBeta Wiki

2. S3 Backend

Minecraft Beta 1.7.3 and Altlauncher rely on S3-compatible object storage to serve assets, libraries, skins, and capes.


You can host a simple S3 backend like => https://codeberg.org/qwaderton/vedro vedro on a standard VPS.


Bucket Structure

To ensure the client and launcher can find the files, your storage must mimic the original Mojang structure. Here is how your buckets or folders should look:


Skins & Capes

  • `/skin/[Username].png` — Player skins
  • `/cloak/[Username].png` — Player capes

Resources & Libraries

  • `/resources/` — Target for sound and music files (ThreadDownloadResources.java)
  • `/libs/` — Launcher libraries and client game jars

Make sure your S3 bucket policies allow **public read access** for these paths, otherwise the game client won't be able to download assets without authentication.