go-mcp-server-service

A JSON-RPC 2.0 compliant server implementing the Model Context Protocol (MCP) for note management (as an example)

This is an example. You can modify this and use as a Boilerplate for your own project. It supports cross-platform development and includes a command-line interface and service component for both development and release builds.

Features

• JSON-RPC 2.0 compliant API
• Cross-platform support (Windows, Linux, macOS)
• Thread-safe note management
• Development and release build configurations
• Service and command-line interface components

Components

Command Line Interface (cmd)

The command-line interface provides direct access to the notes server functionality.

Service (service)

The service component enables system-level integration and background operation.

Resources

The server implements a note storage system with:

• Custom note:// URI scheme for accessing individual notes
• Resource metadata including name, description, and MIME type
• Thread-safe concurrent access

Prompts

Available prompts:

• summarize-notes: Creates summaries of all stored notes
  • Optional style argument ("brief"/"detailed")
  • Combines all current notes with style preference
  • Thread-safe note access

Tools

Available tools:

• add-note: Adds a new note to the server
  • Required arguments: name (string), content (string)
  • Thread-safe state updates
  • Returns confirmation message

Building

Prerequisites

• Go 1.21 or later
• GNU Make or compatible build tool
• Git (for version information)

Build Commands

Development builds (includes debug symbols and race detection):

# Build all components for all platforms
make dev

# Build for specific platform
make dev-windows
make dev-linux
make dev-darwin

# Build specific components
make build-cmd
make build-service

Release builds (optimized and stripped):

# Build all components for all platforms
make release-all

# Build for specific platform
make release-windows
make release-linux
make release-darwin

Run locally:

# Run command-line interface
make run-cmd

# Run service
make run-service

View all available targets:

make help

Build Output

Binaries are created in the bin directory:

• Development builds: bin/dev/<platform>/
• Release builds: bin/release/<platform>/

Configuration

Claude Desktop Integration

Configure the notes server in Claude Desktop's configuration file:

Location

• MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%/Claude/claude_desktop_config.json

Development Configuration

{
  "mcpServers": {
    "notes-server": {
      "command": "./bin/dev/<platform>/notes-server",
      "args": []
    }
  }
}

Release Configuration (Service Example)

{
  "mcpServers": {
    "notes-server": {
      "command": "./bin/release/<platform>/notes-service",
      "args": []
    }
  }
}

Development

Project Structure

.
├── cmd/                    # Command-line interface
├── service/               # Service implementation
├── internal/
│   └── server/           # Core server implementation
│       ├── operations.go # Server operations
│       ├── server.go    # Main server logic
│       └── types.go     # Type definitions
├── Makefile              # Build configuration
└── README.md

Debugging

Since the server runs over stdio, we recommend using the MCP Inspector for debugging:

npx @modelcontextprotocol/inspector ./bin/dev/<platform>/notes-server

The Inspector will provide a URL for the debugging interface.

Error Codes

The server implements standard JSON-RPC 2.0 error codes plus custom codes:

| Code | Description | Standard | | ------ | --------------------- | -------- | | -32700 | Parse error | Yes | | -32600 | Invalid request | Yes | | -32601 | Method not found | Yes | | -32602 | Invalid params | Yes | | -32603 | Internal error | Yes | | -32001 | Resource not found | No | | -32002 | Unsupported operation | No |

License

MIT License

Copyright (c) 2024 Andrew Lee Donelson