Chrome extension that automatically checks AI responses using GPTZero. No API key needed!

• ✅ Works on ChatGPT, Claude, Gemini, and Grok
• ✅ One-click AI detection with percentage score
• ✅ Automated GPTZero workflow
• ✅ Request AI revisions based on results
• ✅ No API key or signup required

1. Open chrome://extensions/
2. Enable "Developer mode"
3. Click "Load unpacked"
4. Select fast-gptzero folder

1. Go to https://chatgpt.com/
2. Ask ChatGPT a question
3. Click "Check with GPTZero" button
4. View results in modal

1. Adds button below AI responses
2. Extracts text when you click
3. Opens GPTZero in background
4. Auto-pastes and submits text
5. Extracts detection score
6. Shows results modal
7. Optional: Request revision

fast-gptzero/
├── manifest.json              # Extension config
├── src/
│   ├── background/            # Service worker
│   ├── content/platforms/     # Platform scripts
│   ├── popup/                 # Extension UI
│   └── styles/                # CSS
├── icons/                     # Extension icons
├── scripts/                   # Helper scripts
└── docs/                      # Documentation

See docs/TESTING.md for testing instructions.

Quick diagnostic (run in console):

// Check if messages detected
document.querySelectorAll('[data-message-author-role="assistant"]').length

// Check if buttons added
document.querySelectorAll('.fast-gptzero-button').length

Button not appearing?

• Refresh page (Ctrl+Shift+R)
• Check console for "content script loaded"
• Reload extension at chrome://extensions/

Extension not loading?

• Check version shows 1.0.2
• Verify all files in src/ folder exist
• Check for errors at chrome://extensions/

GPTZero not working?

• Check if GPTZero tab opens
• Switch to tab to see automation
• Wait 30-60 seconds for results

• src/content/platforms/ - One file per platform (ChatGPT, Claude, etc)
• src/background/service-worker.js - GPTZero automation
• src/content/gptzero.js - Result extraction
• manifest.json - URLs and permissions

If a platform changes their UI:

1. Edit src/content/platforms/[platform].js
2. Update the selectors array
3. Reload extension
4. Test on platform

// Run verification tool in console
// Copy from scripts/verify-selectors.js

• Manifest Version: 3
• Permissions: activeTab, tabs, storage, scripting
• Content Scripts: Injected per platform
• Background: Service worker for automation
• No external dependencies

• Uses GPTZero's free tier (rate limits apply)
• Dependent on platform UI selectors (may break on updates)
• Requires minimum 50 characters of text
• Results depend on GPTZero's accuracy

MIT

1. Test on platforms and report issues
2. Update selectors when platforms change
3. Improve extraction logic
4. Add new platforms

Version: 1.0.3 Last Updated: 2025-11-13