Browser Control

Browser Control Skill

Full browser automation for travel research requiring authentication or complex interactions.

When to Activate

Use this skill when you need to:

• Access authenticated pages (Marriott, Alaska Airlines accounts)
• Check real-time availability and prices
• Scrape forum threads (FlyerTalk, Reddit)
• Interact with JavaScript-heavy travel sites
• Fill forms or perform searches on websites

Architecture

Script-based approach - No MCP overhead. Scripts load only when needed.

Prerequisites

1. Geoffrey Chrome Profile must be running with remote debugging:

   ./scripts/launch-chrome.sh
   

2. Profile must have logins saved for:

   • Marriott Bonvoy
   • Alaska Airlines Mileage Plan
   • FlyerTalk
   • TripAdvisor
   • Reddit

Available Scripts

All scripts are in ./scripts/ and use Playwright connecting via CDP.

Usage Examples

Check Marriott Points Availability

# Navigate to Marriott search
bun scripts/navigate.js "https://www.marriott.com/search/default.mi"

# Or use the search script
bun scripts/search.js marriott "Westin Rusutsu February 2026"

Get FlyerTalk Thread Content

bun scripts/extract.js "https://www.flyertalk.com/forum/thread-url" ".post-content"

Screenshot Hotel Page

bun scripts/screenshot.js "https://www.marriott.com/hotels/travel/ctswi-the-westin-rusutsu-resort/" rusutsu.png

Screenshot Protection & Lazy-Loading

Auto-Resize Protection (ALL screenshots):

• Post-capture resize using Sharp to max 7500px per dimension
• Maintains aspect ratio, prevents Claude Code API crashes
• Every screenshot guaranteed safeToRead: true

Lazy-Loading Limitation (AirBnB, dynamic sites):

• Sites with lazy-loading show grey placeholders in fullPage mode
• Images only load when scrolled into viewport
• Solution: Use viewport screenshots (no --full flag) or screenshot-current.js

# For lazy-loading sites, screenshot current viewport
bun scripts/screenshot-current.js /tmp/output.png

# Or navigate + viewport screenshot
bun scripts/screenshot.js "https://airbnb.com/..." /tmp/output.png

Example output:

{
  "success": true,
  "url": "https://example.com",
  "title": "Example Page",
  "screenshot": "/tmp/screenshot.png",
  "dimensions": { "width": 1920, "height": 1080 },
  "originalDimensions": { "width": 1920, "height": 1080 },
  "scaled": false,
  "safeToRead": true,
  "timestamp": "2025-11-28T..."
}

Connection Details

Scripts connect to Chrome via Chrome DevTools Protocol (CDP):

• URL: http://127.0.0.1:9222
• Profile: ~/.chrome-geoffrey

Error Handling

If scripts fail to connect:

1. Ensure Chrome is running with ./scripts/launch-chrome.sh
2. Check port 9222 is not in use: lsof -i :9222
3. Kill existing Chrome debugger: pkill -f "remote-debugging-port"

Output Format

All scripts return JSON:

{
  "success": true,
  "url": "https://example.com",
  "title": "Page Title",
  "content": "Extracted content or action result",
  "timestamp": "2025-11-22T..."
}

Limitations

• Requires Geoffrey Chrome profile to be running
• Cannot bypass CAPTCHAs (uses real browser fingerprint to avoid most)
• Heavy sites may be slow
• Some sites block automation despite real browser

Future Enhancements

• Add cookie/session export for headless runs
• 1Password CLI integration for credential rotation
• Parallel page operations
• Browser-Use (Python) for complex visual tasks