Backlist
by agmas
Backlist is a Fabric server mod for 1.21.1 that whitelists players already recorded in the server's saved user cache.
What it does
Backlist reads the saved users cache and adds players who have joined the server before to the whitelist automatically. Operators at permission level 2 run the command to do this, and the mod needs Fabric API. Only the server needs it: players join without installing anything.
The mod is server-side only, so clients have nothing to add. Its files target 1.21.1 alone, the latest being 1.0, published 2026-01-15. The source code is public, and the project is open source under the GNU General Public License v3.0 only.
Key features
Whitelist from user cache
Players found in the saved users cache are added to the whitelist without being typed in one by one.
Operator command
Running the command requires operator level 2, so only trusted administrators can trigger the whitelist update.
Memory note
The author reports that a large user cache can raise startup RAM usage, and recommends uninstalling the mod after running the command.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Questions
Does Backlist need Fabric API?
Does every player need Backlist?
In the catalog
Backlist is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from agmas
Similar mods
What the author says
Automatically whitelists every player inside your saved users cache. (AKA; every player that has logged on before) Use /backlist with operator level >2 to whitelist every player in your user.cache
Official listing
- Modrinth page
- modrinth.com/mod/backlist
- Owner
- agmas
- Published
- 2026-01-15
- Updated on Modrinth
- 2026-01-15
- Facts verified
- 2026-10-15