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
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.
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.
claude mcp add cws -- npx -y cws-mcp
{
"mcpServers": {
"cws": {
"args": [
"-y",
"cws-mcp"
],
"command": "npx"
}
}
}
[mcp_servers.cws]
command = "npx"
args = ["-y", "cws-mcp"]
{
"mcpServers": {
"cws": {
"args": [
"-y",
"cws-mcp"
],
"command": "npx"
}
}
}
{
"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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Answers built from our own checks of this server.