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MCP Hello World - MCP Server Mock for Testing

@lobehub

リポジトリ

MCP Hello World - MCP Server Mock for Testing について

A simple Hello World MCP server for CI/CD test

基本情報

カテゴリ

開発者ツール

ライセンス

MIT

ランタイム

node

トランスポート

stdio

公開者

lobehub

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "mcp-hello-world": {
      "command": "npx",
      "args": [
        "mcp-hello-world"
      ]
    }
  }
}

ツール

2

Echoes the input message, prefixed with "Hello ".

Lists all available MCP method definitions on the server.

概要

What is MCP Hello World - MCP Server Mock for Testing?

A minimal Model Context Protocol (MCP) server implemented in TypeScript, designed as a Test Double or Mock Server for unit and integration testing of MCP client code. It provides a lightweight, controllable, and predictable test environment.

How to use MCP Hello World - MCP Server Mock for Testing?

Install as a dev dependency (pnpm add --save-dev mcp-hello-world or bun add --dev mcp-hello-world). Run manually in STDIO mode (npx mcp-hello-world) or HTTP/SSE mode (build then pnpm start:http). Programmatically start and stop the server within test frameworks like Jest or Vitest.

Key features of MCP Hello World - MCP Server Mock for Testing

  • Minimal MCP server mock for testing
  • Supports both STDIO and HTTP/SSE transport protocols
  • Provides echo and debug tools with fixed behaviors
  • Offers static and dynamic greeting resources
  • Fast startup and lightweight dependencies

Use cases of MCP Hello World - MCP Server Mock for Testing

  • Unit testing MCP client code in isolation
  • Integration testing client behavior over STDIO or HTTP/SSE
  • Debugging MCP client interactions with a predictable server

FAQ from MCP Hello World - MCP Server Mock for Testing

Is this server suitable for production use?

No, it is explicitly not suitable for production environments or general-purpose deployment.

What transport protocols does it support?

It supports both STDIO and HTTP/SSE MCP transport protocols.

What resources and tools does the server provide?

It provides resources (hello://world, greeting://{name}), tools (echo, debug), and a prompt (helpful-assistant).

What are the runtime requirements?

The server requires Node.js and is installed via npm/pnpm/bun as a TypeScript package.

Does it support programmatic control in tests?

Yes, it can be programmatically started and stopped within test frameworks (Jest, Vitest, Mocha) using spawn for STDIO or HTTP modes.

コメント

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