Cws runs on your own machine — the client starts it, so there is no endpoint to ping. 84 installs a week from npm. Last commit 19 Oct 2026.
MCP server for Chrome Web Store — extension upload, publish, status, and rollout
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.
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.
claude mcp add cws -e 'CWS_CLIENT_ID=<CWS_CLIENT_ID>' -e 'CWS_CLIENT_SECRET=<CWS_CLIENT_SECRET>' -e 'CWS_REFRESH_TOKEN=<CWS_REFRESH_TOKEN>' -- npx -y cws-mcp{
"mcpServers": {
"cws": {
"command": "npx",
"args": [
"-y",
"cws-mcp"
],
"env": {
"CWS_CLIENT_ID": "<CWS_CLIENT_ID>",
"CWS_CLIENT_SECRET": "<CWS_CLIENT_SECRET>",
"CWS_REFRESH_TOKEN": "<CWS_REFRESH_TOKEN>"
}
}
}
}[mcp_servers.cws]
command = "npx"
args = ["-y", "cws-mcp"]
env = { CWS_CLIENT_ID = "<CWS_CLIENT_ID>", CWS_CLIENT_SECRET = "<CWS_CLIENT_SECRET>", CWS_REFRESH_TOKEN = "<CWS_REFRESH_TOKEN>" }{
"mcpServers": {
"cws": {
"command": "npx",
"args": [
"-y",
"cws-mcp"
],
"env": {
"CWS_CLIENT_ID": "<CWS_CLIENT_ID>",
"CWS_CLIENT_SECRET": "<CWS_CLIENT_SECRET>",
"CWS_REFRESH_TOKEN": "<CWS_REFRESH_TOKEN>"
}
}
}
}{
"servers": {
"cws": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"cws-mcp"
],
"env": {
"CWS_CLIENT_ID": "<CWS_CLIENT_ID>",
"CWS_CLIENT_SECRET": "<CWS_CLIENT_SECRET>",
"CWS_REFRESH_TOKEN": "<CWS_REFRESH_TOKEN>"
}
}
}
}Put your own values in place of
<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’s registry entry marks them as required.
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Cws — questions
Answers built from our own checks of this server.