Generic MCP Server Template

A modular, extensible Model Context Protocol (MCP) server template designed for easy customization and extension.

Features

• Modular Architecture: Clear separation of concerns with a well-defined structure
• Small, Focused Files: Better maintainability and easier for AI to ingest
• Easy Extension Points: Simple patterns for adding new tools and services
• Comprehensive Error Handling: Robust error management throughout the codebase
• Type Safety: Full TypeScript support with proper typing

Project Structure

generic-mcp-template/
├── src/
│   ├── services/       # Service classes for API interactions
│   │   ├── base-service.ts        # Abstract base service with common functionality
│   │   └── example-service.ts     # Example service implementation
│   ├── tools/          # MCP tool definitions and handlers
│   │   ├── example-tools.ts       # Tool definitions (name, description, schema)
│   │   └── example-tool-handlers.ts # Tool handler implementations
│   ├── types/          # TypeScript type definitions
│   │   └── example-types.ts       # Example type definitions
│   ├── config.ts       # Configuration management
│   └── index.ts        # Main entry point
├── .env.example        # Example environment variables
├── package.json        # Project dependencies and scripts
├── tsconfig.json       # TypeScript configuration
└── README.md           # Project documentation

Getting Started

Prerequisites

• Node.js 18 or higher
• npm or yarn

Installation

1. Clone this repository: bash git clone https://github.com/v4lheru/generic-mcp-template.git cd generic-mcp-template

2. Install dependencies: bash npm install

3. Create a .env file based on .env.example: bash cp .env.example .env

4. Edit the .env file with your API keys and configuration.

Building and Running

1. Build the project: bash npm run build

2. Run the server: bash npm start

Extending the Template

Adding a New Service

1. Create a new service file in src/services/: ```typescript // src/services/my-service.ts import { BaseService } from './base-service.js'; import config from '../config.js';

export class MyService extends BaseService { // Implement your service... } ```

1. Add any necessary types in src/types/.

Adding New Tools

1. Define your tools in a new file or extend the existing one in src/tools/: typescript // src/tools/my-tools.ts export const myTools = [ { name: "my_tool", description: "Description of my tool", inputSchema: { // JSON Schema for the tool's input } } ];

2. Implement handlers for your tools: ```typescript // src/tools/my-tool-handlers.ts import { MyService } from '../services/my-service.js';

export function createMyToolHandlers(myService: MyService) { return { my_tool: async (args: any) => { // Implement your tool handler } }; } ```

1. Register your tools and handlers in src/index.ts.

Configuration

The template uses a centralized configuration system in src/config.ts. Configuration can be provided through:

• Environment variables
• Command line arguments (with --env KEY=VALUE)
• Default values in the code

Error Handling

The template includes comprehensive error handling:

• Service-level error handling with rate limiting support
• Tool-level error handling with proper error messages
• MCP protocol error handling

License

MIT