Bearer Token Extractor

A Microsoft Edge browser extension that automatically extracts and copies Bearer tokens from HTTP requests to your clipboard, with JWT decoding and analysis.

Disclaimer: 99% of the code and document has been generated using AI.

Features

• One-click extraction - Automatically copies the latest Bearer token to clipboard when you click the extension icon
• JWT Analysis - Intelligently decodes JWT tokens and displays claims, expiration times, and token details
• Smart timing - Shows token creation time, expiration status, and remaining validity
• Auto-close - Popup automatically closes after 5 seconds (hover to prevent)
• Debug mode - Shows request monitoring statistics when no tokens are found
• Request history - Tracks recent requests with Bearer tokens

Installation

From Source (Developer Mode)

1. Download or clone this repository
2. Open Microsoft Edge and navigate to edge://extensions/
3. Enable "Developer mode" (toggle in the left sidebar)
4. Click "Load unpacked"
5. Select the src/ folder from this repository
6. The extension should now appear in your toolbar!

From Release Package

1. Download the latest .zip file from the Releases section
2. Extract the zip file
3. Follow steps 2-5 from the "From Source" instructions above

Usage

1. Navigate to any website that makes authenticated API calls (web apps, dashboards, etc.)
2. Perform actions that trigger HTTP requests (login, navigate, submit forms)
3. Click the extension icon in your toolbar
4. Token automatically copied! The Bearer token is instantly copied to your clipboard
5. View token details - If it's a JWT, see decoded claims, expiration time, and more

Supported Token Types

• JWT (JSON Web Tokens) - Full decoding with claims analysis
• Generic Bearer tokens - Raw token extraction and display
• Any Authorization header - Automatic Bearer token detection

Development

Prerequisites

• Microsoft Edge (latest version)
• Basic knowledge of JavaScript and browser extensions

Setup

1. Clone the repository

   git clone https://github.com/yourusername/bearer-token-extractor.git
   cd bearer-token-extractor

2. Load in Edge (follow installation steps above using the src/ folder)

3. Make changes to files in the src/ directory

4. Reload extension in edge://extensions/ after making changes

File Structure

• src/manifest.json - Extension configuration and permissions
• src/background.js - Service worker that monitors HTTP requests
• src/popup.html - Extension popup interface
• src/popup.js - Popup functionality and JWT decoding
• src/icons/ - Extension icons

Privacy & Security

• Local processing only - All token analysis happens locally in your browser
• No data transmission - Tokens are never sent to external servers
• Temporary storage - Only keeps tokens in memory during browser session
• Minimal permissions - Only requests necessary permissions for functionality

Contributing

Contributions are welcome! Please feel free to submit a Pull Request. For major changes, please open an issue first to discuss what you would like to change.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Known Issues

• Some websites with strict CORS policies may not expose Authorization headers
• Extension requires active HTTP requests to capture tokens
• Only works with standard "Bearer " token format

Support

If you encounter any issues or have feature requests, please open an issue on GitHub.

Acknowledgments

• This plugin was developed with AI assitance(Claude)