ContextBox is a Chrome extension designed to enhance the web development process by allowing users to capture UI context from webpages and send it to various AI coding tools through AiBridge. With a user-friendly interface, it enables element selection, rich context capture, and direct integration with popular AI tools. The extension focuses on privacy, ensuring that all data processing occurs locally without any data collection.

The features include element selection through intuitive clicks, rich context capturing of HTML, CSS, and accessibility information, and the ability to send this data directly to tools like Claude Code and Codex. ContextBox also includes handy keyboard shortcuts for efficient use, making it a powerful tool for developers looking to streamline their workflow while maintaining data privacy.