AutoModpack4Paper

Unofficial add-on that lets Paper servers work with AutoModpack clients.

AutoModpack only runs on Fabric, Forge and NeoForge servers. This plugin makes a Paper server behave like an AutoModpack server, so players with the AutoModpack mod get your mods, configs, resource packs and shaders downloaded and updated automatically.

Not affiliated with AutoModpack or its author.

How it works

• Drop client mods into plugins/AutoModpack4Paper/modpack/mods/, run /am4p generate, open TCP 30037.
• Players install the AutoModpack mod once; the rest is automatic.
• Bedrock (Geyser/Floodgate) players are unaffected.

Requirements

Paper 26.2, Java 25, packetevents 2.13.0 (other versions untested), AutoModpack 4.0.x on the client. Players see a one-time certificate prompt unless you use a CA-signed certificate (tls.* in config.yml).

Safety

Only files in the modpack folder are served, and only after a strict scan (no symlinks, no executables, .jar only in mods/).