Master CSS MCP Server

by master-co Your server? Claim it

local only

Master CSS runs on your own machine — the client starts it, so there is no endpoint to ping. 323 installs a week from npm. Last commit 7 Nov 2026.

Inspect Master CSS classes, generated CSS, and project stylesheets from your AI client.

Installs per day peak 256 · avg 14 · +457% w/w

a month agotoday

323

Installs / week

npm · @master/css-mcp

1 954

Stars

0 open issues

7 Nov 2026

Last commit

from GitHub

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Master CSS every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add master-css -- npx -y @master/css-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "master-css": {
      "command": "npx",
      "args": [
        "-y",
        "@master/css-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.master-css]
command = "npx"
args = ["-y", "@master/css-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "master-css": {
      "command": "npx",
      "args": [
        "-y",
        "@master/css-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "master-css": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@master/css-mcp"
      ]
    }
  }
}

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Master CSS — questions

Answers built from our own checks of this server.

Why is there no uptime for Master CSS?

Master CSS runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @master/css-mcp was installed 323 times last week.

How do I connect Master CSS?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls @master/css-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Master CSS?

The npm package @master/css-mcp was installed 323 times in the last week. Week over week that is +457%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Master CSS open source?

Yes — it is published under the MIT licence, written in TypeScript and 1 954 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.