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PopNx MCPMCP servers for people who use AI · explained in plain words

CSS Crème

by damnepicversion 1.8.1i★ –iRuns in the cloud
Registry namecom.csscreme/design-systems

Install

Overview

Description from the maker (original English)

Give your agent a real design system: tokens, measured WCAG contrast, and rules to follow.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Design, images & audio

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://csscreme.com/mcp

Run this in your terminal

claude mcp add --transport http design-systems https://csscreme.com/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "design-systems": {
      "url": "https://csscreme.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "design-systems": {
      "type": "http",
      "url": "https://csscreme.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://csscreme.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain csscreme.com (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • … Not checked yet

    Endpoint responds

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    Sign-in with OAuth

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Design, images & audioi

  • More stars than 0% of the other 2177 servers in this category
  • Published to the registry more recently than 39% of the other 2177 servers in this category
  • Basic checks equal to or better than 100% of the other 2177 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is CSS Crème safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.8.1) reached the registry 41 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Give your coding agent access to your Figma data. Implement designs in any framework in one-shot.

Runs on your computer★ 16,165MITUpdated 5 months ago
Install

Claude Real Video

by HUANGCHIHHUNGLeo

Let any LLM watch a video locally — and search everything it has ever watched.

Runs on your computer★ 2,284MITUpdated 2 months ago
Install

Figma’s official server gives AI your design data so it can turn designs into code or describe them accurately. Connects to Figma’s cloud.

Runs in the cloud★ 2,152Updated 13 months ago
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

csscreme skill

A Claude Code skill that gives a coding agent a real design system before it writes UI: semantic tokens, measured WCAG contrast, and rules it can be held to.

Free. No account, no API key, no paid tier.

Why

An agent asked for UI with no design system does the same thing every time: invents a palette, mixes three or four corner radii, adds a second font nobody asked for, and ships contrast that was never checked. The result is recognisable on sight, and no amount of prompt rewording fixes it, because the problem is missing input rather than weak instruction.

A file fixes it. Tokens the agent must use, ratios that were computed rather than asserted, and numbered rules that can be diffed against what actually got built. "Use only these six roles" is checkable. "Make it clean" is not.

Install

Fastest: connect the MCP server (free, no account, no key):

claude mcp add --transport http csscreme https://csscreme.com/mcp

That gives the agent thirteen tools with no files to manage: search_themes, list_themes, get_design_md, get_theme_tokens, get_install_command, get_agent_rules, how_to_use, decode_url, get_design_md_for_url, decode_site, verify_design_md, css_feature and get_scene_embed. The URL tools are the ones worth knowing about: point the agent at a live URL and it decodes that site into the same format, then checks its own generated UI against the file afterwards. css_feature answers whether a modern CSS feature is safe to ship, from Baseline data and from what curated sites actually ship. The skill below adds the house rules on top.

As a skill

Claude Code (project):

mkdir -p .claude/skills/csscreme

curl -o .claude/skills/csscreme/SKILL.md \ https://raw.githubusercontent.com/damnepic/csscreme-skill/main/SKILL.md

Claude Code (all projects): same, into ~/.claude/skills/csscreme/.

Then ask for UI as normal. The skill fires on things like "build a dashboard", "make this look less generic", or "match the design of stripe.com".

What it does

  1. Fetches a DESIGN.md for one of the curated themes at https://csscreme.com/themes.
  2. Or extracts one from any site via https://csscreme.com/extract - URL or screenshot in, role-mapped tokens out, contrast checked in both modes.
  3. Installs the tokens for real with npx shadcn@latest add .

Endpoints it uses

URLReturns
csscreme.com/d/ .mdDESIGN.md for a curated theme
csscreme.com/d/t/ .mdDESIGN.md for a template theme
csscreme.com/t/ .mdDESIGN.md for an extracted theme
csscreme.com/r/ .jsonshadcn/ui registry item
csscreme.com/t/ .jsonshadcn/ui registry item, extracted
csscreme.com/mcpMCP server (JSON-RPC 2.0 over POST)

All CORS-open and cacheable, served as text/markdown or application/json.

What the agent actually gets

A DESIGN.md is a contract rather than a description. Eight fields: semantic colour roles in hex and OKLCH, the full shadcn token set in light and dark, two font families, one radius token, an explicit spacing scale, WCAG contrast ratios that were computed rather than asserted, numbered rules each checkable against the tables above them, and paste-ready CSS variables.

The contrast section is the part worth reading twice. If a colour pair fails AA, the file says FAILS WCAG instead of quietly shipping it. Nothing in the file is an adjective the agent has to interpret.

Works with other tools too

The files are plain Markdown, so nothing here is Claude-specific. Per-tool wiring for Cursor, Codex, v0 and Lovable: https://csscreme.com/ai/design-md

The format

Full field spec, with a worked example generated at build time: https://csscreme.com/ai/design-md

Nobody owns the DESIGN.md file name, us included. The useful part here is the generator and the measured contrast, not the noun.

Licence

MIT. The skill is MIT; the themes it fetches are free to use.

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