M3E Canvas Turns Material 3 Expressive Mockups Into AI Coding Prompts

M3E Canvas, an open-source browser canvas for Material 3 Expressive prototypes, is drawing attention because it turns linked UI sketches into prompts for AI coding tools rather than exporting only visual specs. The project targets a specific handoff problem: helping agents such as Claude Code, Codex, Gemini CLI and Cursor understand screens, layout, navigation and behavior before they generate code.