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MCP Server - JavaScript SDK

@davlgd

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基本情報

カテゴリ

開発者ツール

ライセンス

Apache-2.0

トランスポート

stdio

作者

davlgd

MCP Server - JavaScript SDK について

An unofficial JavaScript SDK for Model Context Protocol

#ai#mcp#stdio

MCP Server - JavaScript SDK の設定

標準の設定はありません

このサーバーの README には解析可能な MCP 設定ブロックが含まれていません。インストール手順はリポジトリをご確認ください。

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MCP Server - JavaScript SDK のツール

ツール一覧はまだありません

この掲載には表示できるツール一覧がまだありません。サーバーにツールがないという意味ではありません。対応機能はプロジェクトのドキュメントをご確認ください。

ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is MCP Server - JavaScript SDK?

MCP Server - JavaScript SDK is an unofficial JavaScript SDK for the Model Context Protocol (MCP). It allows developers to create MCP servers by defining prompts, resources, and tools using plain JavaScript.

How to use MCP Server - JavaScript SDK?

Install the package via npm (npm install mcp-js-server). Create separate modules to export prompts, resources, and tools, then import them and instantiate a server with the MCP constructor, providing server name and version. Server logs are written to standard system log directories.

Key features of MCP Server - JavaScript SDK

  • Define prompts, resources, and tools in JavaScript
  • Supports async tool handlers with JSON Schema validation
  • Lightweight, unofficial implementation of the MCP spec
  • Available as an npm package (mcp-js-server)
  • Logs stored in platform‑specific system directories

Use cases of MCP Server - JavaScript SDK

  • Build a demo MCP server with a simple “hello world” prompt
  • Expose an external OpenAPI specification as a resource
  • Create tools that return dynamic data (e.g., current date)
  • Process complex tool inputs using schemas and async handlers
  • Rapidly prototype custom MCP servers in JavaScript

よくある質問

1

Is this the official JavaScript SDK for MCP?

No, this is an unofficial implementation of the Model Context Protocol.

2

How do I install the package?

Install it using npm: `npm install mcp-js-server`.

3

Where can I find server logs?

Logs are stored in your user system logs directory: - Linux: `~/.local/share/logs` - macOS: `~/Library/Logs` - Windows: `%USERPROFILE%\AppData\Local\Logs`

4

How do I define tools in the SDK?

Export an object where each key is a tool name. Each tool must include `description`, `handler` (an async function), and `schema` (a JSON Schema object defining parameters).

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