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minecraft-modpack-server

Configure and host modded Minecraft servers from CurseForge and Modrinth server packs.

Updated Jul 10, 2026
Search Tags:#forge#minecraft#neoforge#modpack#jvm tuning#backup automation#server hosting
One-click install
npx skills add https://github.com/AvaTar-ArTs/.Agent-skills --skill minecraft-modpack-server-avatar-arts
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: minecraft-modpack-server
Source: https://github.com/AvaTar-ArTs/.Agent-skills/tree/main/skills/gaming/minecraft-modpack-server
Command: npx skills add https://github.com/AvaTar-ArTs/.Agent-skills --skill minecraft-modpack-server-avatar-arts

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 garbage collection flags, configuring server.properties for modded gameplay, and arranging backups. This Skill walks through the entire process with tested commands and modded-specific settings. ## Core Features & Use Cases - End-to-End Server Setup: Download a server pack zip, install the matching Java version, run the mod loader installer, accept the EULA, and generate a clean launch script. - Modded-Specific Configuration: Applies required settings like allow-flight=true and max-tick-time=180000, plus view-distance and simulation-distance presets scaled to player count and hardware. - Performance Tuning & Backups: Provides G1GC JVM arguments scaled to mod count and RAM, plus a cron-scheduled backup script with automatic pruning of old world archives. - Use Case: A user downloads an All The Mods 10 server pack and wants to host it for four friends on a home Linux machine. The Skill gathers preferences (seed, difficulty, online mode, RAM), installs Java 21, runs the installer with ATM10_INSTALL_ONLY, writes tuned configs, opens the firewall, and schedules hourly world backups. ## Quick Start Set up a modded Minecraft server from this server pack zip URL and configure it for four players with automated hourly backups.

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 and unzip the server pack, inspect its startserver.sh to identify the loader and Java version, then run the installer (for example with ATM10_INSTALL_ONLY=true). Accept the EULA, configure server.properties, and create a launch script pointing at the loader's 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 requires Java 8. Install the matching headless OpenJDK package and verify with java -version before starting the server.

How much RAM should I allocate to a modded Minecraft server?▼

Allocate 6-12GB for packs with 100-200 mods and 12-24GB for packs with 200-350+ mods, leaving at least 8GB free for the operating system. Set both Xms and Xmx in user_jvm_args.txt and pair them with the G1GC flags for stable tick performance.

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

Vanilla server.properties kicks players for floating, which conflicts with modded jetpacks and flight items. Set allow-flight=true in server.properties to prevent these false kicks on modded servers.

Can I run a Minecraft server without Mojang authentication for LAN play?▼

Yes, set online-mode=false for LAN or offline play, but you must also set enforce-secure-profile=false or clients will be rejected on join. This is intended only for trusted local networks.

Why is the first startup of a modded server so slow?▼

Large modpacks take several minutes on first launch while generating chunks and initializing mods, and 'Can't keep up!' warnings are normal during this phase. Setting max-tick-time=180000 prevents the watchdog from killing the server during long initial ticks.

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