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minecraft-modpack-server

Configures and launches a modded Minecraft server from a CurseForge or Modrinth server pack zip.

14|5|Updated Apr 9, 2026
Search Tags:#server setup#backups#forge#minecraft#neoforge#modpack#jvm tuning
One-click install
npx skills add https://github.com/MLT-OSS/hermes-agent-go --skill minecraft-modpack-server-mlt-oss
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: minecraft-modpack-server
Source: https://github.com/MLT-OSS/hermes-agent-go/tree/main/skills/gaming/minecraft-modpack-server
Command: npx skills add https://github.com/MLT-OSS/hermes-agent-go --skill minecraft-modpack-server-mlt-oss

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, opening firewall ports, and scheduling world backups. This Skill walks through the entire process with tested commands and sensible defaults. ## Core Features & Use Cases - End-to-End Server Setup: Downloads and inspects a server pack zip, installs the matching Java version (8/17/21), runs the NeoForge or Forge installer, and accepts the EULA. - Performance Tuning: Provides JVM G1GC flags scaled to mod count and RAM, plus view-distance and simulation-distance presets based on player count and hardware. - Operations Automation: Generates a clean launch script, opens port 25565 via ufw, and sets up hourly cron-based world backups with automatic pruning. - Use Case: A user downloads the ATM10 server pack and asks the agent to set it up on a home Linux machine for 4 friends; the agent gathers preferences (seed, difficulty, online mode), installs Java 21, runs the installer, tunes 12GB of RAM, and configures hourly backups. ## Quick Start Set up a modded Minecraft server on this machine from my downloaded server pack zip and configure it for 4 players with 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 CurseForge server pack?▼

Download the server pack zip, unzip it, and run its included install script (or the Forge installer jar with --installServer). Then accept the EULA, configure server.properties, tune JVM args, and launch with the generated start script.

Which Java version does my Minecraft modpack 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. Check the pack's start script or mod loader version to confirm before installing OpenJDK.

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. Always leave at least 8GB free for the operating system, and set Xms and Xmx in user_jvm_args.txt.

Why do players get kicked for flying on a modded Minecraft 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.

How do I automate backups of a Minecraft server world?▼

Create a bash script that tars the world folder into a timestamped archive and prunes old backups beyond a retention limit. Schedule it with a cron entry, such as hourly, and log output to a backup log file.

Why do clients get rejected when online-mode is false?▼

When online-mode=false, you must also set enforce-secure-profile=false in server.properties. Otherwise clients without Mojang authentication are rejected during the handshake.

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