How to Make a Minecraft Server with ChatGPT and Codex

ChatGPT and Codex: which for what

Both are tools that can be wrong. Treat what they produce as a draft that you review, and confirm important facts such as download pages and version requirements on the official sites.

• ChatGPT in the chat window is for learning and drafting. It explains steps, writes server.properties, start scripts and plugin configs, reads a log you paste, and answers questions. It cannot touch your computer. You copy what it gives you.
• Codex is OpenAI's coding agent. It can work inside a project folder: read your files, edit them and, depending on your settings, run commands. That is useful when you want it to create scripts, edit config files or debug with the real log in front of it.

Step 1: Write a one-paragraph brief

Tell the assistant exactly what you want. Include your operating system, edition and who will play.

I want a Java Edition survival server for 8 friends. My machine runs Windows 11 with 16 GB RAM. I am a beginner, so explain each step and give me copy-paste commands. Use Paper. Do not tell me to download anything from sites other than papermc.io.

Step 2: Use ChatGPT for the plan

Because ChatGPT cannot see your machine, always tell it your versions: the Minecraft version, the Paper build and the Java version printed by java -version.

1. Ask for a checklist: Java install, download Paper, first run, EULA, server.properties, port forwarding, plugins, backups.
2. Ask follow-up questions on any step you do not understand. It helps to say "explain this like I am new to servers".
3. Paste error text from your console (with passwords removed) and ask what it means before you change anything.

Step 3: Use Codex inside your server folder

1. Install and sign in to Codex by following OpenAI's official instructions.
2. Create an empty folder for the server and start Codex from inside it, so it only works in that folder.
3. Choose the strictest permission and sandbox setting at first, so it asks before editing files or running commands. Loosen it only for tasks you trust.
4. Add a short notes file (Codex reads an AGENTS.md file in the project) that records your Minecraft version, Java version, ports and rules such as "never change online-mode" and "ask before running anything that deletes files".

Never put secrets in prompts or in the notes file: RCON passwords, Floodgate key.pem, Votifier private keys, SSH keys, API tokens or hosting logins. Use placeholders.

Prompts to try

In this folder, create start.bat for a Paper server with 4 GB of RAM and a README.md listing the manual steps I must do myself (download paper.jar from papermc.io, accept the EULA). Do not download anything.

Read server.properties. List every setting that is risky for a public server (online-mode, whitelist, view-distance, RCON). Explain each in one sentence and propose a safer value. Do not edit the file yet.

Plan how to add Geyser and Floodgate to this Paper server. Give me the official download page, the plugin folder paths, the exact config.yml lines to change including auth-type, and the ports to open for Java (TCP) and Bedrock (UDP). Stop after the plan.

Read logs/latest.log and explain the first real error in plain language. Rank the likely causes. Suggest a check for each. Do not change any files.

Create a minimal Paper plugin project (Gradle) with one command /rules that sends a message. Show the project layout, explain how to build the jar, and keep the code short and commented.

A safe working routine

• Ask the tool to explain a plan before it acts, and approve changes one at a time.
• Back up the folder before every change on a server that already has players.
• Test on a copy first, then apply the same change to the live server.
• After each change, start the server, join it and read the console.
• If a fix does not work after two tries, stop and ask for a different explanation rather than stacking more changes.

Things AI tools commonly get wrong

• Old Java or Minecraft versions in instructions, because these change often.
• Plugin names, commands and config keys that do not exist. Check the plugin's own documentation.
• Download links. Use only the official project sites.
• Port details: Java uses TCP and Bedrock uses UDP. Make sure it says which.
• Telling you to turn off online-mode to "fix" a login problem. That removes account checking and is rarely the right answer.

Finish and list your server

Once friends can join from outside your network, list the server on MCServerShare with the right edition and version, add the verification code to the MOTD for the Verified badge, and set up vote rewards if you want daily votes. Our other guides cover Paper, Purpur, Geyser, ViaVersion and ports in more depth.

Frequently asked questions