onsystem

active

Keeps coding agents on your design system: catches palette colors, native elements and APIs your system lacks, at every edit and pull request, with the fix. Set it up once in your design-system package; every app in your monorepo gets it.

Code-only MCP server: no hosted endpoint, so you install and run it yourself. It is not probed, graded or counted in our reachability statistics.

Get it

Repository: github.com/dgesteves/onsystem
License: MIT
Last update: 2026-11-10
GitHub stars: ★ 20
Homepage: onsystem.vercel.app

accessibility agent-guardrails ai-agents claude-code claude-code-plugin cursor design-system design-system-lint design-tokens linter mcp mcp-server

Listed in

github · source

Run this server as a hosted endpoint? Submit the endpoint and it moves to the remote directory, where it is probed and graded.