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SPECIFICTION
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Marmo UI

marmoui.com

From $9.99/mo Free plan Web
Visit marmoui.com
Spec score 7.8 #16 of 22 in AI UI Design Generators

What it is

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.

Spec sheet

Product
Marmo is an open-source React design system paired with a hosted MCP server that gives AI agents live component APIs, composition patterns, and generation rules.Read 30 Sep 2026 · marmoui.com
Integrations
The install guide documents connections for Claude Code, Codex, Cursor, Gemini CLI, Windsurf, and other MCP clients.Read 30 Sep 2026 · marmoui.com
Support
Priority support is included with Pro.Read 30 Sep 2026 · marmoui.com
License
The free tier includes core components licensed under MIT.Read 30 Sep 2026 · marmoui.com
Code ownership
The pricing FAQ says generated code belongs to the user, is generated with the user's own LLM tokens, and lives in the user's repository.Read 30 Sep 2026 · marmoui.com
Component library
The component library includes 50+ production-ready UI components built for Figma and ready to ship.Read 30 Sep 2026 · marmoui.com
Customization
Pro supports on-brand generation using a DESIGN.md containing details such as brand color, typography, tokens, and component overrides.Read 30 Sep 2026 · marmoui.com
Data handling
The pricing FAQ says generated code does not phone home.Read 30 Sep 2026 · marmoui.com
Design tools
The free plan includes component documentation, Storybook, and a Figma library.Read 30 Sep 2026 · marmoui.com
Generation validation
Generated files pass through an MCP review step that checks for wrong imports, invented props, and broken compositions.Read 30 Sep 2026 · marmoui.com
Package
The React component package is installed as @marmoui/ui using npm.Read 30 Sep 2026 · marmoui.com
Use case
It helps AI agents compose production dashboards and apps from named @marmoui/ui components in a project's style.Read 30 Sep 2026 · marmoui.com

Plans and prices

Free Free $0 forever MIT-licensed core components · Free Core MCP · Personal MCP token and saved DESIGN.md · No rate limits · Unlimited projects · Commercial use Read 30 Sep 2026 · marmoui.com
Pro $9.99 a month $9.99 per month On-brand generation from DESIGN.md · Composition patterns · Pro blocks · Personal MCP token and dashboard · Hosted design-system site · Priority support Read 30 Sep 2026 · marmoui.com

Every Marmo UI plan and price →

Strong points and limits

Strong points

  • More than 50 production-ready components
  • Generated files are checked for composition issues
  • Free plan supports unlimited projects and commercial use
  • Generated code stays in the user's repository

Limits

  • Pro costs $9.99 per month
  • AI generation uses the user's own LLM tokens

Who it suits

Marmo UI suits developers using AI agents to build interfaces with a project’s design system. Pro may suit teams that want generation guided by their brand details in a DESIGN.md file.

Verdict

Marmo UI combines a React component library with an MCP workflow for AI-generated interfaces. The free tier includes core components and design resources; Pro adds brand-guided generation and other listed tools for $9.99 per month.

Where Specifiction places it

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