Marmo UI vs Starry

Marmo UI pairs an open-source React design system with a hosted MCP server to help AI agents compose dashboards and apps using named @marmoui/ui components. The server provides live component APIs, composition patterns and generation rules; generated files pass through a review step that checks imports, props and compositions. The library includes more than 50 production-ready components and comes with Storybook and a Figma library. Developers install the React package with npm. The free plan includes documentation, the design tools and MIT-licensed core components, and allows unlimited projects, commercial use and no rate limits. Pro adds generation guided by a DESIGN.md file with brand details, plus composition patterns, Pro blocks, a hosted design-system site and priority support. It costs $9.99 per month, and a 14-day trial is listed. Integration instructions cover Claude Code, Codex, Cursor, Gemini CLI, Windsurf and other MCP clients. Generated code belongs to the user, uses the user’s own LLM tokens and stays in the user’s repository; it does not phone home.

Starry is an AI design editor that turns natural-language prompts into editable interface layers and exports code and design assets. Its canvas AI, powered by ACP, can create and modify auto-layout designs. Export formats include React JSX, HTML, SVG, design tokens, PNG, JPG, and WEBP. Starry reads native Figma.fig files and supports copying and pasting selections between the two editors. Users provide their own key for supported AI providers, and can use custom OpenAI- or Anthropic-format endpoints. Starry says keys are stored locally and prompts go directly to the selected provider. Designs are saved as local.pen and.fig files that can be committed to Git. Peer-to-peer collaboration runs over WebRTC without a server or account, and a headless CLI can export documents and automate design operations, including in CI workflows. Starry supports macOS 12 or later, Windows 10 or later, and Linux, with about 150 MB of free disk space required. The free plan requires users to supply an AI provider key for AI chat; Pro is listed at $29 a month.