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Cws MCP Server

local only

Cws runs on your own machine — the client starts it, so there is no endpoint to ping. 36 installs a week from npm. Last commit 6 Aug 2026.

MCP server for Chrome Web Store — extension upload, publish, status, and rollout

Installs per day peak 21 · avg 7 · +0% w/w
a month agotoday
36
Installs / week
npm · cws-mcp
4
Stars
0 open issues
6 Aug 2026
Last commit
0 releases in 90 days
MIT
License
JavaScript

Nothing serious here today

Today is the operative word: we check Cws 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 cws -- npx -y cws-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "cws": {
      "args": [
        "-y",
        "cws-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.cws]
command = "npx"
args = ["-y", "cws-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "cws": {
      "args": [
        "-y",
        "cws-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "cws": {
      "args": [
        "-y",
        "cws-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: CWS_CLIENT_ID (Google OAuth2 Client ID for Chrome Web Store API), CWS_CLIENT_SECRET (Google OAuth2 Client Secret), CWS_REFRESH_TOKEN (OAuth2 Refresh Token). The author declared them in the registry entry; get the values from the project itself.

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answering

Cws — questions

Answers built from our own checks of this server.

Why is there no uptime for Cws?
Cws 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 cws-mcp was installed 36 times last week.
How do I connect Cws?
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 runs locally, so the command pulls cws-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Cws?
The npm package cws-mcp was installed 36 times in the last week. Week over week that is +0%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Cws open source?
Yes — it is published under the MIT licence, written in JavaScript and 4 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.