PrismarineJS
Mineflayer
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Create Minecraft bots with a powerful, stable, and high level JavaScript API, also usable from Python.
First time using Node.js? You may want to start with the tutorial. Know Python? Checkout some Python examples and try out Mineflayer on Google Colab.
Features
- Supports Minecraft 1.8 to 1.21 (1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20, and 1.21)
- Entity knowledge and tracking.
- Block knowledge. You can query the world around you. Milliseconds to find any block.
- Physics and movement - handle all bounding boxes
- Attacking entities and using vehicles.
- Inventory management.
- Crafting, chests, dispensers, enchantment tables.
- Digging and building.
- Miscellaneous stuff such as knowing your health and whether it is raining.
- Activating blocks and using items.
- Chat.
Roadmap
Checkout this page to see what our current projects are.
Installation
First install Node.js >= 18 from nodejs.org then:
npm install mineflayerTo update mineflayer (or any Node.js) package and its dependencies, use
npm updateDocumentation
| link | description |
|---|---|
| tutorial | Begin with Node.js and mineflayer |
| FAQ.md | Got a question ? go there first |
| api.md unstable_api.md |
The full API reference |
| history.md | The changelog for mineflayer |
| examples/ | Checkout all the mineflayer examples |
Contribute
Please read CONTRIBUTING.md and prismarine-contribute
Usage
Videos
A tutorial video explaining the basic set up process for a bot can be found here.
If you want to learn more, more video tutorials are there, and the corresponding source codes for those bots is there.
Getting Started
Without a version specified, the version of the server will be guessed automatically. Without auth specified, the mojang auth style will be guessed.
Echo Example
const mineflayer = require('mineflayer')
const bot = mineflayer.createBot({
host: 'localhost', // minecraft server ip
username: 'Bot', // username to join as if auth is `offline`, else a unique identifier for this account. Switch if you want to change accounts
auth: 'microsoft' // for offline mode servers, you can set this to 'offline'
// port: 25565, // set if you need a port that isn't 25565
// version: false, // only set if you need a specific version or snapshot (ie: "1.8.9" or "1.16.5"), otherwise it's set automatically
// password: '12345678' // set if you want to use password-based auth (may be unreliable). If specified, the `username` must be an email
})
bot.on('chat', (username, message) => {
if (username === bot.username) return
bot.chat(message)
})
// Log errors and kick reasons:
bot.on('kicked', console.log)
bot.on('error', console.log)If auth is set to microsoft, you will be prompted to login to microsoft.com with a code in your browser. After signing in on your browser,
the bot will automatically obtain and cache authentication tokens (under your specified username) so you don't have to sign-in again.
To switch the account, update the supplied username. By default, cached tokens will be stored in your user's .minecraft folder, or if profilesFolder is specified, they'll instead be stored there.
For more information on bot options see node-minecraft-protocol's API doc.
Connecting to a Realm
To join a Realm that your Minecraft account has been invited to, you can pass a realms object with a selector function like below.
const client = mineflayer.createBot({
username: 'email@example.com', // minecraft username
realms: {
// This function is called with an array of Realms the account can join. It should return the one it wants to join.
pickRealm: (realms) => realms[0]
},
auth: 'microsoft'
})See what your bot is doing
Thanks to the prismarine-viewer project, it's possible to display in a browser window what your bot is doing.
Just run npm install prismarine-viewer and add this to your bot:
const { mineflayer: mineflayerViewer } = require('prismarine-viewer')
bot.once('spawn', () => {
mineflayerViewer(bot, { port: 3007, firstPerson: true }) // port is the minecraft server port, if first person is false, you get a bird's-eye view
})And you'll get a live view looking like this:
More Examples
| example | description |
|---|---|
| viewer | Display your bot world view in the browser |
| pathfinder | Make your bot go to any location automatically |
| chest | Use chests, furnaces, dispensers, enchantment tables |
| digger | Learn how to create a simple bot that is capable of digging blocks |
| discord | Connect a discord bot with a mineflayer bot |
| jumper | Learn how to move, jump, ride vehicles, attack nearby entities |
| ansi | Display your bot's chat with all of the chat colors shown in your terminal |
| guard | Make a bot guard a defined area from nearby mobs |
| multiple-from-file | Add a text file with accounts and have them all login |
And many more in the examples folder.
Modules
A lot of the active development is happening inside of small npm packages which are used by mineflayer.
The Node Way™
"When applications are done well, they are just the really application-specific, brackish residue that can't be so easily abstracted away. All the nice, reusable components sublimate away onto github and npm where everybody can collaborate to advance the commons." — substack from "how I write modules"
Modules
These are the main modules that make up mineflayer:
| module | description |
|---|---|
| minecraft-protocol | Parse and serialize minecraft packets, plus authentication and encryption. |
| minecraft-data | Language independent module providing minecraft data for minecraft clients, servers and libraries. |
| prismarine-physics | Provide the physics engine for minecraft entities |
| prismarine-chunk | A class to hold chunk data for Minecraft |
| node-vec3 | 3d vector math with robust unit tests |
| prismarine-block | Represent a minecraft block with its associated data |
| prismarine-chat | A parser for a minecraft chat message (extracted from mineflayer) |
| node-yggdrasil | Node.js library to interact with Mojang's authentication system, known as Yggdrasil |
| prismarine-world | The core implementation of worlds for prismarine |
| prismarine-windows | Represent minecraft windows |
| prismarine-item | Represent a minecraft item with its associated data |
| prismarine-nbt | An NBT parser for node-minecraft-protocol |
| prismarine-recipe | Represent minecraft recipes |
| prismarine-biome | Represent a minecraft biome with its associated data |
| prismarine-entity | Represent a minecraft entity |
Debug
You can enable some protocol debugging output using DEBUG environment variable:
DEBUG="minecraft-protocol" node [...]On windows :
set DEBUG=minecraft-protocol
node your_script.jsThird Party Plugins
Mineflayer is pluggable; anyone can create a plugin that adds an even higher level API on top of Mineflayer.
The most updated and useful are :
- minecraft-mcp-server A MCP server for mineflayer, allowing using mineflayer from an LLM
- pathfinder - advanced A* pathfinding with a lot of configurable features
- prismarine-viewer - simple web chunk viewer
- web-inventory - web based inventory viewer
- statemachine - A state machine API for more complex bot behaviors
- Armor Manager - automatic armor management
- Dashboard - Frontend dashboard for mineflayer bot
- PVP - Easy API for basic PVP and PVE.
- Auto Eat - Automatic eating of food.
- Auto Crystal - Automatic placing & breaking of end crystals.
- Tool - A utility for automatic tool/weapon selection with a high level API.
- Hawkeye - A utility for using auto-aim with bows.
- GUI - Interact with nested GUI windows using async/await
- Projectile - Get the required launch angle for projectiles
- Movement - Smooth and realistic player movement, best suited for PvP
Collect Block - Quick and simple block collection API.
But also check out :
radar - web based radar interface using canvas and socket.io. YouTube Demo
- auto-auth - chat-based bot authentication
- Bloodhound - determine who and what is responsible for damage to another entity
- tps - get the current tps (processed tps)
- panorama - take Panorama Images of your world
- player-death-event - emit player death event in Mineflayer.
Projects Using Mineflayer
- Voyager An Open-Ended Embodied Agent with Large Language Models
- mindcraft Lib for using mineflayer with LLMs
- rom1504/rbot
- Darthfett/Helperbot
- vogonistic/voxel - visualize what the bot is up to using voxel.js
- JonnyD/Skynet - log player activity onto an online API
- MinecraftChat (last open source version, built by AlexKvazos) - Minecraft web based chat client
- Cheese Bot - Plugin based bot with a clean GUI. Made with Node-Webkit.
- Chaoscraft - Minecraft bot using genetic algorithms, see its youtube videos
- hexatester/minetelegram - Minecraft - Telegram bridge, build on top of mineflayer & telegraf.
- PrismarineJS/mineflayer-builder - Prints minecraft schematics in survival, keeping orientation
- SilkePilon/OpenDeliveryBot - Minecraft bot in python to deliver items from place to place.
- and hundreds more - All the projects that github detected are using mineflayer
Testing
Testing everything
Simply run:
npm testTesting specific version
Run
npm run mocha_test -- -g <version>where <version> is a minecraft version like 1.12, 1.15.2...
Testing specific test
Run
npm run mocha_test -- -g <test_name>where <test_name> is a name of the test like bed, useChests, rayTrace...
Example
npm run mocha_test -- -g "1.18.1.*BlockFinder"to run the block finder test for 1.18.1