Have Claude Code build in Minecraft as you play

Press K, describe a build (“a medieval castle with a moat”) and a mod drives your own Claude Code through 20 in-game tools; one click…

by /u/DutyOnly430812 Oct 2026

Prompt for your agent

Goal: Build big structures in Minecraft by describing them.
Setup: agents used in source: Claude; tools/MCPs stated: Minecraft Java, Fabric/Forge/NeoForge.
Steps:
1. Install Claude Code (Pro or Max) plus Minecraft Java and the free mod jar.
2. In game, press K and describe what you want built.
3. Keep playing while it builds through the mod’s in-game tools; undo with one click if you don’t like it.
Rules: ask me before anything irreversible (sending, posting, paying, deleting); don’t invent data, results or tools I haven’t given you; tell me what you couldn’t verify.
Note: Beta; the author’s biggest timed build was a 34k-block castle in about 15 minutes.
Based on: /u/DutyOnly4308 — https://www.reddit.com/r/ClaudeAI/comments/1x3olix/i_made_a_free_minecraft_mod_where_claude_builds/

Steps are from the source. Includes a “Based on” credit line.

I tried this

Tell the next builder. One anonymous answer each; click again to undo.

Agents, models and tools only what the source states

Agents
Claude
Tools
  • Minecraft Java
  • Fabric/Forge/NeoForge

Sources & credit