Frontend Design Loop MCP

Frontend Design Loop MCP is an open-source Model Context Protocol (MCP) integration that enhances the quality of frontend web pages by enabling screenshot-grounded design iteration and proof artifact generation. It works in coordination with coding agents to make functional but under-designed pages look materially better, automating the workflows of previewing, visual comparison, and patch evaluation. Targeted at developers and AI agent implementers, it is used when you have a working page that needs a more polished, premium visual design without changing its structure.