Go MCP Server Project Generator

Generate a complete, production-ready Model Context Protocol (MCP) server project in Go.

Project Requirements

You will create a Go MCP server with:

1. Project Structure: Proper Go module layout
2. Dependencies: Official MCP SDK and necessary packages
3. Server Setup: Configured MCP server with transports
4. Tools: At least 2-3 useful tools with typed inputs/outputs
5. Error Handling: Proper error handling and context usage
6. Documentation: README with setup and usage instructions
7. Testing: Basic test structure

Template Structure

myserver/
├── go.mod
├── go.sum
├── main.go
├── tools/
│   ├── tool1.go
│   └── tool2.go
├── resources/
│   └── resource1.go
├── config/
│   └── config.go
├── README.md
└── main_test.go

go.mod Template

module github.com/yourusername/{{PROJECT_NAME}}

go 1.23

require (
    github.com/modelcontextprotocol/go-sdk v1.0.0
)

main.go Template

package main

import (
    "context"
    "log"
    "os"
    "os/signal"
    "syscall"

    "github.com/modelcontextprotocol/go-sdk/mcp"
    "github.com/yourusername/{{PROJECT_NAME}}/config"
    "github.com/yourusername/{{PROJECT_NAME}}/tools"
)

func main() {
    cfg := config.Load()
    
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()

    // Handle graceful shutdown
    sigCh := make(chan os.Signal, 1)
    signal.Notify(sigCh, os.Interrupt, syscall.SIGTERM)
    go func() {
        <-sigCh
        log.Println("Shutting down...")
        cancel()
    }()

    // Create server
    server := mcp.NewServer(
        &mcp.Implementation{
            Name:    cfg.ServerName,
            Version: cfg.Version,
        },
        &mcp.Options{
            Capabilities: &mcp.ServerCapabilities{
                Tools:     &mcp.ToolsCapability{},
                Resources: &mcp.ResourcesCapability{},
                Prompts:   &mcp.PromptsCapability{},
            },
        },
    )

    // Register tools
    tools.RegisterTools(server)

    // Run server
    transport := &mcp.StdioTransport{}
    if err := server.Run(ctx, transport); err != nil {
        log.Fatalf("Server error: %v", err)
    }
}

tools/tool1.go Template

package tools

import (
    "context"
    "fmt"

    "github.com/modelcontextprotocol/go-sdk/mcp"
)

type Tool1Input struct {
    Param1 string `json:"param1" jsonschema:"required,description=First parameter"`
    Param2 int    `json:"param2,omitempty" jsonschema:"description=Optional second parameter"`
}

type Tool1Output struct {
    Result string `json:"result" jsonschema:"description=The result of the operation"`
    Status string `json:"status" jsonschema:"description=Operation status"`
}

func Tool1Handler(ctx context.Context, req *mcp.CallToolRequest, input Tool1Input) (
    *mcp.CallToolResult,
    Tool1Output,
    error,
) {
    // Validate input
    if input.Param1 == "" {
        return nil, Tool1Output{}, fmt.Errorf("param1 is required")
    }

    // Check context
    if ctx.Err() != nil {
        return nil, Tool1Output{}, ctx.Err()
    }

    // Perform operation
    result := fmt.Sprintf("Processed: %s", input.Param1)

    return nil, Tool1Output{
        Result: result,
        Status: "success",
    }, nil
}

func RegisterTool1(server *mcp.Server) {
    mcp.AddTool(server,
        &mcp.Tool{
            Name:        "tool1",
            Description: "Description of what tool1 does",
        },
        Tool1Handler,
    )
}

tools/registry.go Template

package tools

import "github.com/modelcontextprotocol/go-sdk/mcp"

func RegisterTools(server *mcp.Server) {
    RegisterTool1(server)
    RegisterTool2(server)
    // Register additional tools here
}

config/config.go Template

package config

import "os"

type Config struct {
    ServerName string
    Version    string
    LogLevel   string
}

func Load() *Config {
    return &Config{
        ServerName: getEnv("SERVER_NAME", "{{PROJECT_NAME}}"),
        Version:    getEnv("VERSION", "v1.0.0"),
        LogLevel:   getEnv("LOG_LEVEL", "info"),
    }
}

func getEnv(key, defaultValue string) string {
    if value := os.Getenv(key); value != "" {
        return value
    }
    return defaultValue
}

main_test.go Template