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minecraft-modpack-server

Configures and launches modded Minecraft servers from CurseForge and Modrinth server packs.

Updated May 4, 2026
Search Tags:#server setup#backups#forge#minecraft#neoforge#modpack#jvm tuning
One-click install
npx skills add https://github.com/Junkfooooood/hermes-governance --skill minecraft-modpack-server-junkfooooood
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: minecraft-modpack-server
Source: https://github.com/Junkfooooood/hermes-governance/tree/main/skills/gaming/minecraft-modpack-server
Command: npx skills add https://github.com/Junkfooooood/hermes-governance --skill minecraft-modpack-server-junkfooooood

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Setting up a modded Minecraft server involves many error-prone manual steps: installing the correct Java version, running the NeoForge/Forge installer, tuning JVM flags, editing server.properties, opening firewall ports, and configuring backups. This Skill walks through the entire process with tested commands and modded-specific settings. ## Core Features & Use Cases - End-to-End Server Setup: Downloads a server pack zip, installs the correct Java version (8/17/21), runs the mod loader installer, accepts the EULA, and generates a clean launch script. - Performance Tuning: Provides JVM garbage collection flags and view-distance/simulation-distance presets scaled to player count, mod count, and available RAM. - Automated Backups: Creates a cron-scheduled backup script that archives the world folder hourly and prunes old backups. - Use Case: A user downloads an All The Mods 10 server pack and wants to host it for friends. The Skill installs Java 21, runs the installer with ATM10_INSTALL_ONLY, configures server.properties for modded play (allow-flight, max-tick-time), and sets up hourly world backups. ## Quick Start Set up a modded Minecraft server on this machine from the server pack zip at this URL, and ask me for my preferred server name, difficulty, and player count first.

Frequently Asked Questions about minecraft-modpack-server

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I set up a modded Minecraft server from a server pack?▼

Download the server pack zip, extract it, install the Java version matching your Minecraft release, then run the pack's installer script or the Forge installer jar. After accepting the EULA, configure server.properties and launch with the provided JVM args file.

Which Java version does my Minecraft server need?▼

Minecraft 1.21 and newer requires Java 21, versions 1.18 through 1.20 require Java 17, and 1.16 or older runs on Java 8. Install the matching openjdk headless package and verify with java -version before starting the server.

How much RAM does a modded Minecraft server need?▼

Packs with 100-200 mods typically need 6-12GB of heap, while 200-350+ mod packs need 12-24GB. Always leave at least 8GB free for the operating system, and pair the allocation with G1GC tuning flags in user_jvm_args.txt.

Why do players get kicked for flying on my modded server?▼

Vanilla server.properties kicks players who appear to fly, but modded packs include jetpacks and flying mounts. Set allow-flight=true in server.properties to prevent these false kicks.

Why is my modded server slow to start the first time?▼

First startup takes several minutes because large packs generate chunks and patch libraries. 'Can't keep up!' warnings during initial world generation are normal and settle once spawn chunks are generated.

How do I run a Minecraft server without Mojang authentication?▼

Set online-mode=false in server.properties for LAN or offline play, and also set enforce-secure-profile=false or clients will be rejected. Note this disables account verification, so combine it with a whitelist for safety.

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