cobble-mcp

npx -y cobble-mcp

Then in Cursor: “play with me” · “build a house next to me” · type in Minecraft chat and it answers.

Film this (go viral)

Post with #cobble + the repo link. Clips > screenshots.

Related MCP server: MCP Minecraft Remote

Why this hits

Clips of Claude actually placing blocks spread. Admin panels don't.

COBBLE drops a Mineflayer bot into your server. Same chunk as you. Chat, path, dig, build, swing at creepers — directed co-op, not a silent autofill.

Cookie-cutter mc_build_house is demoted — viral builds come from the agent's mind via mc_design / mc_sculpt.

60-second setup

1. Java world — creative + online-mode=false for easy demos

2. Wire Cursor (~/.cursor/mcp.json):

{
  "mcpServers": {
    "cobble": {
      "command": "npx",
      "args": ["-y", "cobble-mcp"],
      "env": {
        "MC_HOST": "localhost",
        "MC_PORT": "25565",
        "MC_USERNAME": "Claude",
        "MC_AUTH": "offline",
        "MC_FAST": "1",
        "MC_BRAIN": "agent"
      }
    }
  }
}

Local clone? Point command/args at node + dist/server.js instead.

3. Reload MCP → in Cursor: play with me → talk in Minecraft.

How the brain works

You (the Cursor agent) are the brain. Not a side API that forgot the cabin you just built.

mc_connect → mc_come → loop: mc_play → think → mc_chat / build → mc_play

• come / kill / stop — instant in-process reflexes

• Plans, opinions, builds — agent via mc_play

• Builds run in the background — tool returns now; poll mc_build_status

Peak tools

mc_play · mc_pulse · mc_hang · mc_chat · mc_read_chat · mc_wait_chat · mc_note · mc_autotalk

mc_come · mc_goto · mc_stop · mc_status · mc_connect · mc_disconnect

mc_design · mc_sculpt · mc_build · mc_build_wall · mc_build_house (lazy) · mc_survey_site · mc_repair · mc_clear · mc_build_status · mc_stop_build · mc_scan · mc_inventory

Creative + MC_FAST=1 → timed /setblock (no pathfind freeze mid-farm).

Env

Dev

git clone https://github.com/brian-mwirigi/cobble-mcp
cd cobble-mcp
npm i && npm run build && npm run smoke
npm start   # MCP stdio

Contribute

Easiest win: add an ASCII design pack under examples/designs/ — no TypeScript.

Code / tools: see CONTRIBUTING.md · grab something from ROADMAP.md.

Open a PR that answers: what clip does this unlock?