LaunchRoblox 🚀

A lightweight, robust, and zero-headache utility to programmatically authenticate and launch the Roblox client using Python.

Built with modern Python standards, LaunchRoblox natively handles the complex roblox-player: URI protocol, API ticket exchanges, and CSRF token generation so you don't have to.

Installation

Install the latest version directly from PyPI:

pip install LaunchRoblox

Features

• Instant Launching: Bypass the browser and launch directly into a game.
• Private Server Support: Automatically resolves VIP linkCode URLs into backend access codes.
• Instance Targeting: Follow users into exact server UUIDs (jobId).
• Deployment Channels: Test your game on specific Roblox bootstrapper channels (e.g., zCanary).
• Process Lifecycle Tracking: Capture the running game instance thread to track execution status or block script endings.
• Native Multi-Instance Support: Programmatically bypass Roblox's single-window mutation restriction on Windows to launch concurrent accounts.
• Asynchronous Support: Full async/await compatibility using httpx for non-blocking integrations like Discord bots or web frameworks.
• Built-in Logging: Fully integrated with Python's native logging module for easy debugging.

Usage Examples

1. Basic Launch (Public Server)

import os
from LaunchRoblox import launchRoblox

cookie = os.getenv("ROBLOX_COOKIE", "_|WARNING:-DO-NOT-SHARE-THIS...")
placeId = 2753915549

launchRoblox(placeId, cookie)

2. Private Server Launch

If you have a VIP server link (e.g., ?privateServerLinkCode=12345...), pass the code directly. The library will safely resolve it into a server access code via the Roblox API before launching.

launchRoblox(
    placeId=2753915549, 
    cookie=cookie, 
    linkCode="your_private_server_link_code"
)

3. Target a Specific Server (Job ID)

Perfect for multi-account testing or following someone into a specific server block.

launchRoblox(
    placeId=2753915549, 
    cookie=cookie, 
    jobId="01af84de-4bca-413c-8361-ec23bfda85b2"
)

4. Custom Deployment Channel

Launch into a specific Roblox testing branch. (Note: Using "LIVE" or leaving this blank will safely default to the public production client).

launchRoblox(
    placeId=2753915549, 
    cookie=cookie, 
    channel="zCanary"
)

5. Process Lifecycle Tracking

launchRoblox returns a RobloxProcess object. You can use this to monitor the client's state, acquire its Process ID (PID), or halt your Python script until the game closes.

from LaunchRoblox import launchRoblox

gameProcess = launchRoblox(2753915549, "YOUR_COOKIE")

if gameProcess:
    print(f"Roblox client running on PID: {gameProcess.pid}")
    
    # Wait until the user closes the game window
    gameProcess.wait()
    print("Roblox has been closed!")

6. Native Multi-Instance Support (Windows Only)

Set multiInstance=True to programmatically claim the system window handle mutex. This allows you to open separate, concurrent account sessions simultaneously without being blocked by the standard single-client limit.

import time
from LaunchRoblox import launchRoblox

# Launch Account 1
launchRoblox(2753915549, "COOKIE_ACCOUNT_1", multiInstance=True)

# Brief pause to let the first client window stabilize
time.sleep(3)

# Launch Account 2 concurrently
launchRoblox(2753915549, "COOKIE_ACCOUNT_2", multiInstance=True)

7. Asynchronous Launching

For async environments, import and await launchRobloxAsync. This avoids blocking your application's main thread during network API validation steps.

import asyncio
from LaunchRoblox import launchRobloxAsync

async def main():
    gameProcess = await launchRobloxAsync(2753915549, "YOUR_COOKIE")
    
    if gameProcess:
        print(f"Async launch successful. Tracking PID: {gameProcess.pid}")

if __name__ == "__main__":
    asyncio.run(main())

Advanced: Debug Logging

LaunchRoblox uses Python's standard logging module under the hood. If you are experiencing authentication errors or want to see the background API routing in real-time, simply configure your root logger before calling the launch function:

import logging
from LaunchRoblox import launchRoblox

# Enable info/debug logging to your console
logging.basicConfig(level=logging.INFO, format="[%(levelname)s] %(name)s: %(message)s")

launchRoblox(2753915549, "YOUR_COOKIE")

License

MIT