MCP JS Server Template

What is MCP JS Server Template?

A simplified template for creating Model Context Protocol (MCP) servers in JavaScript, designed for integration with Claude Desktop. It provides a basic structure for developing custom MCP servers with minimal boilerplate code.

How to use MCP JS Server Template?

Clone the repository, install the @modelcontextprotocol/sdk dependency, then add a configuration entry to Claude Desktop’s claude_desktop_config.json file pointing to the server script. The server exposes two tools: about and hello.

Key features of MCP JS Server Template

• Implements standard MCP server initialization
• Provides two basic tools: about and hello
• Follows MCP protocol version 2024-11-05
• Uses @modelcontextprotocol/sdk for server implementation
• Includes error handling and logging

Use cases of MCP JS Server Template

• Creating a custom MCP server for Claude Desktop
• Learning how to build MCP servers with minimal code
• Prototyping new tools before full implementation

FAQ from MCP JS Server Template

What tools does MCP JS Server Template include?

It includes the about tool (returns server information) and the hello tool (provides a greeting with an optional name parameter).

What are the prerequisites?

Node.js v16 or later, Claude Desktop, and the @modelcontextprotocol/sdk npm package.

How do I configure it for Claude Desktop?

Add a configuration entry to claude_desktop_config.json with command "node" and args pointing to the full path of the server file. An example configuration is provided in the README.

Can I extend the template?

Yes. Copy it, modify the TOOLS array, implement custom handlers in server.fallbackRequestHandler, and update the server name and version.

What are the limitations?

Minimal error handling and no advanced security features. It is meant as a starting point for custom implementations.