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MCP Bridge: AI Control

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MCP Bridge: AI Control

By bartaci

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Let AI assistants like Claude, Cursor or Gemini see and control your Minecraft world through the Model Context Protocol. One-command setup, local-only and token-protected.

Mod Loaders
Minecraft
26.2
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About

Description

# MCP Bridge

**Let an AI see and control your Minecraft world.**

MCP Bridge starts a small local [Model Context Protocol](https://modelcontextprotocol.io) server inside Minecraft, so AI assistants such as **Claude, Cursor, VS Code (Copilot), Gemini CLI, Codex and Windsurf** can inspect your world and act on it: build structures, move players, read chat, run commands.

## Features
- 🧱 **Build**: place blocks, fill areas, scan regions
- 👀 **Observe**: players, blocks, nearby entities, chat history
- ⚙️ **Control**: teleport, give items, spawn entities, game mode, time, weather
- 💬 **Chat**: read and send messages
- 🖥️ **Commands**: run any Minecraft command (optional, can be disabled)

## One-command setup
1. Install the mod (Fabric + Fabric API), launch the game once.
2. Open PowerShell and run (replace `claude-desktop` with your AI: `claude-code`, `codex`, `cursor`, `vscode`, `windsurf`, `gemini`):
   `powershell -ExecutionPolicy Bypass -File "$env:APPDATA\.minecraft\config\mcpbridge\connect-ai.ps1" -Ai claude-desktop`
3. Restart your AI. From now on it connects automatically every time you start the game. 

The script only adds one `minecraft` entry to your AI's config (with a backup). It finds the config file automatically, including Microsoft Store installs of Claude Desktop. Run it with `-Remove` to disconnect.

Then just ask: *"Build a 7x7 stone house next to me"*, *"What's around me?"*, *"Set the time to day."*

## Safe by default
- Listens on **127.0.0.1 only**: nothing is exposed to the internet or your network.
- Every request needs your **private token** (generated automatically, never shared).
- Dangerous commands (`stop`, `op`, `ban`…) are **blocked**; `run_command` can be switched off in the config.
- Back up your world before big builds: an AI can make mistakes.

## Requirements
Minecraft 26.2 · Fabric Loader 0.19+ · Fabric API · Java 25. The setup script is for Windows (PowerShell); on other systems, connect manually with the URL and token from `config/mcpbridge.json`.

## Links
Full guide and troubleshooting: see the GitHub README.

*Not an official Minecraft product. Not affiliated with or endorsed by Mojang, Microsoft, Anthropic, Google, OpenAI or any AI vendor mentioned.*