CSS Crème is an MCP server with 13 tools an agent can call, among them css_feature, decode_site, decode_url. It answers at https://csscreme.com/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 4 of 4 times since 23 September 2026; the last check, on 6 November 2026, succeeded.
Give your agent a real design system: tokens, measured WCAG contrast, and rules to follow.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
css_feature | Answers two questions about a modern CSS feature with data instead of recall. First, its Baseline status (widely available, newly available, or limited availability), the date, and which core browsers lack it, read from the open web-feature Inputs: feature |
decode_site | Read a sample of pages from one site (from its sitemap.xml, or the homepage links when there is no sitemap) and report what is CONSISTENT across them: which declared tokens, colours, font stacks, radii and spacing values appear on every pag Inputs: url, pages, maxAge |
decode_url | Fetch a public site's HTML and stylesheets and return what its CSS declares: named custom properties that look like design tokens, the colours it uses most, its font stacks, border radii, spacing values, and the framework it appears to be b Inputs: url, maxAge, format, expect, expectSpec |
get_agent_rules | Return a short standing-instructions block that makes every future session read DESIGN.md before touching UI. Paste it whole into CLAUDE.md, AGENTS.md or .cursor/rules/design.mdc. It points at the DESIGN.md rather than restating it, and car Inputs: id |
get_design_md | Fetch the full DESIGN.md for one theme: semantic colour roles, the complete shadcn token set in light and dark, typography, radius, spacing, MEASURED WCAG contrast ratios, and numbered rules the generated UI must follow. Read this before wr Inputs: id |
get_design_md_for_url | Read the stylesheets of a public site and return a full DESIGN.md: semantic roles with the token each came from, measured WCAG contrast pairs, the tokens the site itself declares (framework internals counted separately), font families, the Inputs: url, maxAge |
get_install_command | Return the exact `npx shadcn@latest add <url>` command that installs one theme into a shadcn/ui project, plus the registry URL it reads. Use when the user says "install it" and you already know the id. Inputs: id |
get_scene_embed | Returns paste-ready code for a CSS Crème Scene: an interactive 3D meadow (four seasons, dandelion clocks, or a garden of peonies, white roses, lilies, irises, hydrangeas, tulips or daffodils, at any hour) grown by code in the browser, with Inputs: season, time, roles, colors, palette, mode |
get_theme_tokens | Get the shadcn/ui registry item (OKLCH tokens, light and dark) plus the paste-ready CSS variables for one theme, and the one-line command that installs it for real. Use after get_design_md when you are ready to write the tokens into globals Inputs: id, format |
how_to_use | Explains where a DESIGN.md belongs for a given coding agent (Claude Code, Cursor, v0, Codex, Lovable) so the design rules apply to every session rather than one message. Inputs: tool |
list_themes | Browse the full catalogue of curated themes and templates. Use when the user wants to see options rather than search for one. Inputs: kind, mode |
search_themes | Find a design system by describing what you are building ("dark developer tool", "calm fintech dashboard", "playful consumer app"). Returns matching themes with their DESIGN.md URL and shadcn install command. Call this first when the user h Inputs: query, kind, mode, limit |
verify_design_md | Every DESIGN.md carries a Fingerprint line. Pass the id and that fingerprint; the server answers whether the copy matches the current token set, and if not, returns the current tokens so the agent can update the file instead of following a Inputs: id, fingerprint |
Every block below points at https://csscreme.com/mcp. Pick your client and copy.
claude mcp add --transport http css-cr-me https://csscreme.com/mcp
{
"mcpServers": {
"css-cr-me": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://csscreme.com/mcp"]
}
}
}{
"mcpServers": {
"css-cr-me": {
"url": "https://csscreme.com/mcp"
}
}
}{
"servers": {
"css-cr-me": {
"type": "http",
"url": "https://csscreme.com/mcp"
}
}
}{
"context_servers": {
"css-cr-me": {
"url": "https://csscreme.com/mcp"
}
}
}{
"mcpServers": {
"css-cr-me": {
"serverUrl": "https://csscreme.com/mcp"
}
}
}{
"mcpServers": {
"css-cr-me": {
"url": "https://csscreme.com/mcp"
}
}
}name: CSS Crème
version: 0.0.1
schema: v1
mcpServers:
- name: CSS Crème
type: streamable-http
url: https://csscreme.com/mcp{
"mcpServers": {
"css-cr-me": {
"httpUrl": "https://csscreme.com/mcp"
}
}
}{
"mcpServers": {
"css-cr-me": {
"type": "http",
"url": "https://csscreme.com/mcp"
}
}
}{
"mcpServers": {
"css-cr-me": {
"url": "https://csscreme.com/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fcsscreme.com%2Fmcp&type=streamable_http&id=css-cr-me&name=CSS%20Cr%C3%A8me
It answered our last check on 6 November 2026 in 210 ms. Over 4 checks since 23 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by csscreme.com and served from csscreme.com, the vendor's own domain: https://csscreme.com/mcp.
13, as returned by the server's own tools/list on 9 November 2026: css_feature, decode_site, decode_url, get_agent_rules, get_design_md, get_design_md_for_url, get_install_command, get_scene_embed, and 5 more.
It answered our last check on 6 November 2026 in 210 ms. Over 4 checks since 23 September 2026 it answered 4.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://csscreme.com/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.csscreme. Endpoint host: csscreme.com. ARD identifier: urn:air:com.csscreme:mcp:design-systems.
First indexed 19 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.