headlessstage

Browser automation through a headless browser page, as a CLI and a stdio MCP server in one bin. Navigate to a URL, click, hover, fill and select form elements, take named screenshots and evaluate JavaScript in the page.

The browser itself sits behind an injectable executor interface (BrowserExecutor in src/types.ts). This package bundles no browser and downloads none: with no executor configured, browser commands fail with a clear "Browser unavailable" error. Deployments inject a Puppeteer-compatible executor to drive a real browser. Launch options that weaken browser security (--no-sandbox, --disable-web-security, --allow-insecure-localhost) are rejected unless a call explicitly passes allowDangerous: true.

Install

npx -y @reneturcios/headlessstage mcp

Related MCP server: Cloudflare Playwright MCP

CLI

headlessstage mcp                     # stdio MCP server
headlessstage navigate <url>
headlessstage screenshot <name> [selector]
headlessstage click <selector>
headlessstage fill <selector> <value>
headlessstage evaluate <script>
headlessstage --version

Exit codes: 0 success, 1 browser error, 2 usage error.

MCP tools

MCP client config:

{
  "mcpServers": {
    "headlessstage": {
      "command": "npx",
      "args": ["-y", "@reneturcios/headlessstage", "mcp"]
    }
  }
}

Docker

docker run -i ghcr.io/cloudcorprecords/headlessstage          # MCP server
docker run --rm ghcr.io/cloudcorprecords/headlessstage --version

Development

npm install
npm run build
npm test

MIT license.