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Cvdsafe MCP Server

local only

Cvdsafe runs on your own machine — the client starts it, so there is no endpoint to ping. 15 installs a week from npm. Last commit 5 Oct 2026.

Check if a palette or image is colorblind-safe, generate safe palettes, check WCAG contrast.

Installs per day peak 15 · avg 6 · -9% w/w
a month agotoday
15
Installs / week
npm · cvdsafe-mcp
1
Stars
0 open issues
5 Oct 2026
Last commit
2 releases in 90 days
MIT
License
HTML

What the code does

We read the source, 4 d ago · rules 995398eba69f

In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

        _M[t] = np.array(json.load(open(os.path.join(here, f"transforms/{name}.json")))["matrix"])
        pub = subprocess.run(["npm", "view", pkg, "version"], capture_output=True,
                             text=True, shell=True).stdout.strip()
Executes code built at runtime tools/a11y-sweep.js:245
          w.eval(axeSrc);
Runs an external command tools/verify-widget.js:53
    execFileSync(process.execPath, [path.join(ROOT, "tools", "build-widgets.js"), "--check"], { stdio: "pipe" });
  out.innerHTML=h;
Page loads a third-party script research/index.html:23
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-8826956454892311" crossorigin="anonymous"></script>

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Nothing serious here today

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

Three servers free · no card

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.

run in your terminal
claude mcp add cvdsafe -- npx -y cvdsafe-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "cvdsafe": {
      "command": "npx",
      "args": [
        "-y",
        "cvdsafe-mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.cvdsafe]
command = "npx"
args = ["-y", "cvdsafe-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "cvdsafe": {
      "command": "npx",
      "args": [
        "-y",
        "cvdsafe-mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "cvdsafe": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "cvdsafe-mcp"
      ]
    }
  }
}

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same job, measured the same way
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PickShade color tools
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PaletteGet
by yang7206

Curated app, web and mini program color palettes with WCAG contrast and CSS variables.

9 tools answering
ColorPickr
by colorpickr

Contrast checks with fixes, OKLCH harmonies, palettes, color-blind previews and code export.

6 tools answering
Colorblind
by vince-gonzalez

See a color or image as a colorblind person does; recolor images and make Ishihara plates.

19 installs/wk local only

Cvdsafe — questions

Answers built from our own checks of this server.

Why is there no uptime for Cvdsafe?
Cvdsafe 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 cvdsafe-mcp was installed 15 times last week.
How do I connect Cvdsafe?
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 cvdsafe-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Cvdsafe?
The npm package cvdsafe-mcp was installed 15 times in the last week. Week over week that is -9%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Cvdsafe open source?
Yes — it is published under the MIT licence, written in HTML and 1 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.