This document outlines a major project to build a web interface builder API. The tool will allow users to dynamically build websites more efficiently through a GUI with real-time code editing. It will use the Twitter Bootstrap CSS framework. Key features will include an HTML editor, drag-and-drop components, HTML code generation, and real-time editing. The tool aims to be faster and more reliable than similar products like Divshot and Jetstrap. Potential problems to address include the user workspace, design issues, security, and compatibility with small devices.