mcpbeat

Atomic CSS MCP Server

io.github.Yoodaekyung/atomic-css
not responding

Atomic CSS is listed as active in the registry but did not answer our last check.

Utility CSS for any platform — near-zero learning curve. Built for developers and AI alike

Uptime history 44 hours of history · worst hour 0%
44 hours agonow
0.0%
Uptime 24h
0 of 92 checks
—
Tools
hidden behind auth
1022 ms
Response time
average over 24h
open, no key
Access
sse

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

run in your terminal
claude mcp add atomic-css --transport http https://atomiccss.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "atomic-css": {
      "url": "https://atomiccss.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.atomic-css]
url = "https://atomiccss.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "atomic-css": {
      "url": "https://atomiccss.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "atomic-css": {
      "url": "https://atomiccss.dev/mcp"
    }
  }
}

Endpoints

URLTransportStateLatencyChecked
https://atomiccss.dev/mcp sse answering 1022 ms 2 min ago

Atomic CSS — questions

Answers built from our own checks of this server.

Is Atomic CSS working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 1022 ms. The bar chart above shows every period we have measured.
The registry lists Atomic CSS as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Atomic CSS?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Atomic CSS need an API key?
No. Atomic CSS completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.