This build targets Minecraft 26.1.2.
ConfigStackMC lets you edit stack sizes from one simple config file. Items you do not list stay vanilla, so you can change only the things you care about.
What to download:
- Paper server: use the paper jar. Put it in your server's plugins folder. Players do not need to install anything.
- Fabric singleplayer or Fabric server: use the fabric jar. Put it in the mods folder.
- SHA256SUMS.txt is only for checking downloaded files.
Built against:
- Paper 26.1.2 stable, build 70
- Fabric Loader 0.19.3
- Fabric API 0.152.1+26.1.2
- Java 25
Small note: this workflow checks that the mod/plugin builds for this target. Before using it on a main server, it is still worth doing a quick test on a small world.