Most AI design tools are just Figma with a Generate button. Efecto built it the other way around.

Everything in Efecto is React and Tailwind under the hood. That means AI agents — Claude Code, Cursor, Windsurf — are not working around the canvas, they are the canvas. 66 MCP tools give them direct access to artboards, layers, auto-layout, graphics, animations, slides, shaders, and web page publishing. When an agent makes a change, it writes real components, not a rasterised approximation of them.

The creator is Pablo Stanley, best known for Blush and HiTheme, currently staff designer at Vercel on v0. The v0 background matters — Stanley has watched AI design-to-code pipelines work at scale from the inside, and Efecto reads like a response to what he found missing.

The key difference from similar tools is hosting. Design something, publish it to the web without leaving the studio. No handoff, no export, no deploy step to wire up separately.

Free, browser-based, no installation required.