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dgesteves/onsystem

MCP server

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Can I trust it?

No red flags in our checks.

  • Stars from real accounts No data

    We haven't checked its stars for fakes yet.

  • Active OK

    Last change yesterday.

  • Licence OK

    MIT: you can use it for free, also in a commercial product. Keep the licence notice.

Quick checks from public data. They help, but they are no guarantee.

What it is

A linter and MCP server that checks React and TypeScript UI code against a design system. It reads components, variants and tokens from source and flags palette colors, native elements, unknown components, props and variants, with a fix for each finding. It runs locally, at edit…

Who it's for

Design-system and platform teams with a React design-system package, and developers using coding agents on Tailwind or shadcn/ui apps

How to use it

Install

npx -y onsystem inspect

From its README. Check it there before running it.

Add it to Claude or Cursor

It's an MCP server: you add it to your AI assistant's settings. Its README explains the exact setup.

Setup in the README

Ask your AI to set it up

Paste this into Claude, ChatGPT or your coding assistant.

Help me install and set up dgesteves/onsystem in my project. Follow its README: https://github.com/dgesteves/onsystem. Explain each step and check it is safe before running anything.

Star curve

73From 0 to 73 stars between 6 Oct 2026 and 25 Oct 2026.

Alternatives

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