mcp

This MCP server is a websocket wrapper around an underlying stdio MCP server. It exposes the traditional MCP server interface over a WebSocket, enabling clients to interact with MCP tools without spawning separate processes for every server. You can connect a client to the websocket endpoint and discover available tools, then issue MCP commands through the same transport your client library expects. The README demonstrates a Client from the Model Context Protocol SDK connecting via WebSocket transport, listing tools, and using them programmatically. The included examples show how to start the underlying MCP server via a package wrapper (npx), then connect to it through a WebSocket URL (for example ws://localhost:3001) and list tools like puppeteer_navigate, puppeteer_screenshot, puppeteer_click, puppeteer_fill, and puppeteer_evaluate. In short, this server simplifies MCP usage by turning a stdio-based server into a network service you can manage from a client in your application.

Prerequisites:

• Node.js (and optionally bun) installed on your machine
• Internet access to install dependencies

Step 1: Clone the repository (if you haven’t already)

• git clone https://github.com/your-org/mcp-server-server.git
• cd mcp-server-server

Step 2: Install dependencies

• If the project uses npm:
  • npm install
• If you prefer bun (as shown in the README examples):
  • bun install

Step 3: Run the server wrapper to expose a WebSocket MCP server

• Using npx (as shown in the README):
  • npx -y @modelcontextprotocol/mcp-server-wrapper@latest
• Or install and run the wrapper locally via bun/node as demonstrated in the README:
  • bun run mcp-server-wrapper -p 3001 -- npx -y @modelcontextprotocol/server-puppeteer@latest
  • bun run mcp-server-wrapper -p 3001 -- node path/to/server-puppeteer/dist/index.js

Step 4: Connect your MCP client

• Point your MCP client at ws://localhost:3001 (or the port you started on)
• Use the SDK client’s WebSocket transport to interact with the server (as shown in the README example)

Notes:

• If you intend to run a specific underlying MCP server, you can configure it via the mcpServers config (see mcp_config section).

Tips and caveats:

• The wrapper converts a traditional stdio MCP server into a WebSocket service; performance depends on the underlying server and network latency.
• You may need to adjust the port (default shown is 3001) to fit your environment and firewall rules.
• Example tool names shown in the README include Puppeteer-based tools such as puppeteer_navigate, puppeteer_screenshot, puppeteer_click, puppeteer_fill, and puppeteer_evaluate; your actual tool set will depend on the underlying MCP server you wrap.
• If you encounter connectivity issues, ensure WebSocket endpoints are accessible and that any proxy or firewall settings allow ws/wss traffic.
• The mcpServers configuration supports specifying the underlying server commands (e.g., npx or uvx) so you can tailor spin-up behavior for different environments.
• For production, consider building a Docker image around the wrapper to provide a consistent, repeatable deployment.