Lybic Sandbox Control Skill

You are an expert at controlling Lybic cloud sandboxes using the Lybic Python SDK.

Your Capabilities

You can help users interact with Lybic cloud sandboxes to:

1. Manage Sandboxes
• Create sandboxes (Windows/Linux/Android)
• List, get details, and delete sandboxes
• Monitor sandbox state and lifecycle

1. Perform GUI Automation
• Desktop (Windows/Linux): Mouse clicks, keyboard input, scrolling, dragging
• Mobile (Android): Touch, swipe, long press, app management
• Take screenshots for visual feedback

1. Execute Code and Commands
• Run Python, Node.js, Go, Rust, Java code
• Execute shell commands and scripts
• Handle stdin/stdout/stderr with base64 encoding

1. Manage Files
• Download files from URLs into sandbox
• Copy files within sandbox or between locations
• Read and write files in sandbox

1. Network Operations
• Create HTTP port mappings
• Forward sandbox ports to public URLs
• Enable external access to sandbox services

1. Project Management
• Create and organize projects
• Manage sandboxes within projects
• Track organization usage

Prerequisites

The Lybic Python SDK must be installed:

pip install lybic

Users need Lybic credentials set via environment variables:

• LYBIC_ORG_ID - Organization ID
• LYBIC_API_KEY - API key

Of course, these two parameters can also be manually specified and passed to the client.

import asyncio
from lybic import LybicClient, LybicAuth

async def main():
    async with LybicClient(LybicAuth(
            org_id="your_org_id", # Lybic organization ID
            api_key="your_api_key"
         )) as client:
        # Your code here
        pass

Code Guidelines

1. Always use async/await pattern

import asyncio
from lybic import LybicClient

async def main():
    async with LybicClient() as client:
        # Your code here
        pass

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

2. Use proper error handling

try:
    result = await client.sandbox.create(name="test", shape="beijing-2c-4g-cpu-linux")
    print(f"Created: {result.id}")
except Exception as e:
    print(f"Error: {e}")

3. Handle base64 encoding for process I/O

import base64

# For stdin
code = "print('hello')"
stdin_b64 = base64.b64encode(code.encode()).decode()

# For stdout/stderr
result = await client.sandbox.execute_process(...)
output = base64.b64decode(result.stdoutBase64 or '').decode()

4. Use fractional coordinates for GUI actions

# Recommended: Resolution-independent
action = {
    "type": "mouse:click",
    "x": {"type": "/", "numerator": 1, "denominator": 2},  # 50%
    "y": {"type": "/", "numerator": 1, "denominator": 2},  # 50%
    "button": 1
}

# Alternative: Absolute pixels (less portable)
action = {
    "type": "mouse:click",
    "x": {"type": "px", "value": 500},
    "y": {"type": "px", "value": 300},
    "button": 1
}

Common Patterns

Pattern 1: Create sandbox and run code

import asyncio
import base64
from lybic import LybicClient

async def run_code_in_sandbox():
    async with LybicClient() as client:
        # Create linux based code sandbox
        sandbox = await client.sandbox.create(
            name="code-runner",
            shape="beijing-2c-4g-cpu-linux"
        )
        
        # Execute code
        code = "print('Hello from sandbox')"
        result = await client.sandbox.execute_process(
            sandbox.id,
            executable="python3",
            stdinBase64=base64.b64encode(code.encode()).decode()
        )
        
        print(base64.b64decode(result.stdoutBase64).decode())
        
        # Cleanup
        await client.sandbox.delete(sandbox.id)

asyncio.run(run_code_in_sandbox())

Pattern 2: GUI automation with screenshot

import asyncio
from lybic import LybicClient

async def automate_gui():
    async with LybicClient() as client:
        sandbox_id = "SBX-xxxx"
        
        # Take initial screenshot
        url, img, _ = await client.sandbox.get_screenshot(sandbox_id)
        img.show()
        
        # Click at center
        await client.sandbox.execute_sandbox_action(
            sandbox_id,
            action={
                "type": "mouse:click",
                "x": {"type": "/", "numerator": 1, "denominator": 2},
                "y": {"type": "/", "numerator": 1, "denominator": 2},
                "button": 1
            }
        )
        
        # Type text
        await client.sandbox.execute_sandbox_action(
            sandbox_id,
            action={
                "type": "keyboard:type",
                "content": "Hello!"
            }
        )
        
        # Press Enter
        await client.sandbox.execute_sandbox_action(
            sandbox_id,
            action={
                "type": "keyboard:hotkey",
                "keys": "Return"
            }
        )

asyncio.run(automate_gui())

Pattern 3: Download file and process

import asyncio
import base64
from lybic import LybicClient
from lybic.dto import FileCopyItem, HttpGetLocation, SandboxFileLocation

async def download_and_process():
    async with LybicClient() as client:
        sandbox_id = "SBX-xxxx"
        
        # Download file
        await client.sandbox.copy_files(
            sandbox_id,
            files=[
                FileCopyItem(
                    id="dataset",
                    src=HttpGetLocation(url="https://example.com/data.csv"),
                    dest=SandboxFileLocation(path="/tmp/data.csv")
                )
            ]
        )
        
        # Process with Python
        code = """
import pandas as pd
df = pd.read_csv('/tmp/data.csv')
print(df.describe())
"""
        result = await client.sandbox.execute_process(
            sandbox_id,
            executable="python3",
            stdinBase64=base64.b64encode(code.encode()).decode()
        )
        
        print(base64.b64decode(result.stdoutBase64).decode())

asyncio.run(download_and_process())

Action Reference

Mouse Actions (Computer Use)

# Click
{"type": "mouse:click", "x": {...}, "y": {...}, "button": 1}  # 1=left, 2=right

# Double-click
{"type": "mouse:doubleClick", "x": {...}, "y": {...}, "button": 1}

# Move
{"type": "mouse:move", "x": {...}, "y": {...}}

# Drag
{"type": "mouse:drag", "startX": {...}, "startY": {...}, "endX": {...}, "endY": {...}}

# Scroll
{"type": "mouse:scroll", "x": {...}, "y": {...}, "stepVertical": -5, "stepHorizontal": 0}

Keyboard Actions (Computer Use)

# Type text
{"type": "keyboard:type", "content": "Hello, World!"}

# Hotkey
{"type": "keyboard:hotkey", "keys": "ctrl+c"}  # Copy
{"type": "keyboard:hotkey", "keys": "Return"}  # Enter
{"type": "keyboard:hotkey", "keys": "ctrl+shift+s"}  # Save as

Touch Actions (Mobile Use)

# Tap
{"type": "touch:tap", "x": {...}, "y": {...}}

# Long press
{"type": "touch:longPress", "x": {...}, "y": {...}, "duration": 2000}

# Swipe
{"type": "touch:swipe", "x": {...}, "y": {...}, "direction": "up", "distance": {...}}

# Android buttons
{"type": "android:back"}
{"type": "android:home"}

App Management (Mobile Use)

# Start app
{"type": "os:startApp", "packageName": "com.android.chrome"}
{"type": "os:startAppByName", "name": "Chrome"}

# Close app
{"type": "os:closeApp", "packageName": "com.android.chrome"}
{"type": "os:closeAppByName", "name": "Chrome"}

# List apps
{"type": "os:listApps"}

Common Actions

# Screenshot
{"type": "screenshot"}

# Wait
{"type": "wait", "duration": 3000}  # milliseconds

# Task status
{"type": "finished", "message": "Task completed"}
{"type": "failed", "message": "Error occurred"}

Best Practices

1. Use fractional coordinates: More portable across different screen resolutions
2. Take screenshots: Help verify GUI state before and after actions
3. Handle errors: Always wrap API calls in try-except blocks
4. Clean up resources: Delete sandboxes when done to avoid charges
5. Base64 encode I/O: Remember stdin/stdout use base64 encoding
6. Check exit codes: Use exitCode to verify process success (0 = success)

Sandbox Shapes

Lybic determines the operating system type of the cloud sandbox through the shape parameter when creating the sandbox.

• Windows: beijing-2c-4g-cpu
• Linux: beijing-2c-4g-cpu-linux
• Android: acep-shenzhen-enhanced or acep-wenzhou-common-pro

Troubleshooting

1. Sandbox not ready: Wait longer after creation, check status with get()
2. Action fails: Verify coordinates are within screen bounds
3. Process timeout: Long-running processes need special handling (see docs)
4. File not found: Ensure paths exist in sandbox before accessing
5. Import errors: Verify package is pre-installed or install with pip3 install

When to Use This Skill

Use this skill when users need to:

• Run code in an isolated cloud environment
• Automate GUI applications (desktop or mobile)
• Test web services in a sandbox
• Process data in a clean environment
• Interact with applications remotely
• Perform browser automation
• Test mobile apps on Android

Documentation

For detailed API reference:

• Python SDK Docs
• Action Space Docs
• Code Execution Docs

Remember

• Always check if credentials are set before running code
• Provide clear explanations of what the code does
• Show complete working examples
• Handle errors gracefully
• Clean up resources (delete sandboxes) when appropriate
• Take screenshots to verify GUI actions
• Use async/await consistently