A Minecraft bot powered by large language models and Mineflayer API. This bot uses the Model Context Protocol (MCP) to enable Claude and other supported models to control a Minecraft character.
Prerequisites
- Git
- Node.js
- A running Minecraft game (the setup below was tested with Minecraft 1.21.4 Java Edition included in Microsoft Game Pass)
- An MCP-compatible client. Claude Desktop will be used as an example, but other MCP clients are also supported
Getting started
This bot is designed to be used with Claude Desktop through the Model Context Protocol (MCP).
Run Minecraft
Create a singleplayer world and open it to LAN (ESC -> Open to LAN). Bot will try to connect using port 25565 and hostname localhost. These parameters could be configured in claude_desktop_config.json on a next step.
MCP Configuration
Make sure that Claude Desktop is installed. Open File -> Settings -> Developer -> Edit Config. It should open installation directory. Find file with a name claude_desktop_config.json and insert the following code:
{
"mcpServers": {
"minecraft": {
"command": "npx",
"args": [
"-y",
"github:yuniko-software/minecraft-mcp-server",
"--host",
"localhost",
"--port",
"25565",
"--username",
"ClaudeBot"
]
}
}
}
Double-check that right --port and --host parameters were used. Make sure to completely reboot the Claude Desktop application (should be closed in OS tray).
Running
Make sure Minecraft game is running and the world is opened to LAN. Then start Claude Desktop application and the bot should join the game.
It could take some time for Claude Desktop to boot the MCP server. The marker that the server has booted successfully:
You can give bot any commands through any active Claude Desktop chat. You can also upload images of buildings and ask bot to build them 😁
Don't forget to mention that bot should do something in Minecraft in your prompt. Because saying this is a trigger to run MCP server. It will ask for your permissions.
Available Commands
Once connected to a Minecraft server, Claude can use these commands:
Movement
get-position- Get the current position of the botmove-to-position- Move to specific coordinateslook-at- Make the bot look at specific coordinatesjump- Make the bot jumpmove-in-direction- Move in a specific direction for a duration
Flight
fly-to- Make the bot fly directly to specific coordinates
Inventory
list-inventory- List all items in the bot's inventoryfind-item- Find a specific item in inventoryequip-item- Equip a specific item
Block Interaction
place-block- Place a block at specified coordinatesdig-block- Dig a block at specified coordinatesget-block-info- Get information about a blockfind-block- Find the nearest block of a specific type
Entity Interaction
find-entity- Find the nearest entity of a specific type
Communication
send-chat- Send a chat message in-game
Game State
detect-gamemode- Detect the gamemode on game