JsComputer adds a fully programmable in‑game computer to Minecraft.
It features a simulated command‑line shell and a built‑in JavaScript interpreter, allowing players to write scripts, automate tasks, and create advanced logic systems directly inside the game.

This mod is designed to be simple for beginners yet powerful enough for experienced programmers.

Shell Commands

• pwd         - Shows the current directory
• clear       - Clears the terminal screen
• date        - Displays the current date and time
• ls          - Lists files (option: -l)
• js          - Executes a JavaScript file
• javascript  - Alias of js
• cd          - Changes the current directory
• cat         - Displays the contents of a file
• touch       - Creates an empty file
• mkdir       - Creates a directory (option: -p)
• rm          - Deletes a file or directory (option: -r)
• echo        - Prints text or writes to a file
• cp          - Copies a file
• mv          - Moves or renames a file
• edit        - Opens the built‑in text editor
• help        - Shows the help menu

JavaScript API

The core of JsComputer is its embedded JavaScript engine.
Players can write JavaScript code to automate tasks, interact with the world, and build custom logic.

You have access to certain native Java classes, including:

• Integer
• Long
• Double
• Float
• Boolean
• String
• Character
• Math
• Random
• Number
• Objects
• Array
• Date
• Calendar
• TimeZone
• Locale
• LocalDate
• LocalDateTime

In addition to standard Java classes, JsComputer also exposes custom APIs designed specifically for Minecraft scripting:

• IO
  • print(text)
  • println(text)
  • readln()
  • readln(prompt)
• Utils
  • sleep(ms)
  • getBlock(x,y,z) return the name of the block. Example: minecraft:dirt
  • getBlockRelative(x,y,z)
  • getDimension() return the name of the dimension
  • now() same as System.currentTimeMillis();
• FS
  • createFile(path)
  • createFile(path, data)
  • createDirectory(path)
  • deleteFile(path)
  • deleteDirectory(path)
  • readFile(path)
  • writeFile(path, data)
  • appendFile(path, data)
  • moveFile(path, newPath)
  • copyFile(path, newPath)
  • listFiles(path)
  • isDirectory(path)
  • exists(path)
  • normalizePath(path)
• Redstone
  • read()
  • read(side)
  • write(side, power)
  • write(power)
  • getOutput(side)
  • clear()
• Net (only for version 1.1+)
  • get(urlStr) returns the URL response as an object with two parameters (code and body)

The API is sandboxed to keep gameplay safe and balanced.