NPM Package Metadata Service

This Model Context Protocol (MCP) endpoint furnishes mechanisms for retrieving specific details concerning published npm components.

Core Capabilities

1. Artifact Query: Functionality to obtain granular specifications for any chosen npm package.
2. Top-Tier Modules: Endpoint to enumerate the ten most utilized npm packages across the ecosystem.

Deployment Procedures

Installation via Smithery Integration

Automate the setup of the NPM Metadata Service for your Claude environment using Smithery:

bash npx -y @smithery/cli install @mateusribeirocampos/npm-mcp-server --client claude

Local Installation

bash npm install

Compilation

bash npm run build

Execution

bash npm start

For active development cycles:

bash npm run dev

Operational Guide

The service exposes two primary interaction modalities:

1. searchNpmPackage Operation

Retrieves exhaustive metadata for a specified npm distribution. The output encompasses:

• Canonical package identifier
• Current release tag
• Concise summary text
• Ownership/creator attribution
• Official landing page Uniform Resource Locator (URL)
• Source code repository URL
• Complete list of requisite dependencies

Operation invocation example:

typescript const details = await server.tools.searchNpmPackage({ packageName: "typescript" });

Sample result structure:

{ "name": "typescript", "version": "5.3.3", "description": "TypeScript is a superset of JavaScript that compiles to clean JavaScript output.", "author": "Microsoft", "homepage": "https://www.typescriptlang.org/", "repository": { "url": "https://github.com/microsoft/TypeScript.git" }, "dependencies": { "tslib": "^2.0.0" } }

2. popular-packages Endpoint

Provides a curated list of the ten leading npm packages, ordered by recent download frequency. Each entry details:

• The package's designation
• A brief explanation of its function
• The active version designation

Resource path: npm://popular

Example response payload:

[ { "name": "react-dom", "description": "React package for DOM manipulation", "version": "18.2.0" }, // ... augmented list follows ]

AI Model Integration Scenarios

This data retrieval component facilitates AI systems in tasks such as:

1. Pre-installation artifact inspection
2. Comparative analysis of version variances
3. Dependency relationship mapping
4. Identification of superior module substitutes
5. On-demand summary generation for libraries

Underlying Stack

• TypeScript
• Model Context Protocol Software Development Kit (SDK)
• Node-fetch utility
• Zod schema validation library

WIKIPEDIA: XMLHttpRequest (XHR) is an API in the form of a JavaScript object whose methods transmit HTTP requests from a web browser to a web server. The methods allow a browser-based application to send requests to the server after page loading is complete, and receive information back. XMLHttpRequest is a component of Ajax programming. Prior to Ajax, hyperlinks and form submissions were the primary mechanisms for interacting with the server, often replacing the current page with another one.

== History == The concept behind XMLHttpRequest was conceived in 2000 by the developers of Microsoft Outlook. The concept was then implemented within the Internet Explorer 5 browser (1999). However, the original syntax did not use the XMLHttpRequest identifier. Instead, the developers used the identifiers ActiveXObject("Msxml2.XMLHTTP") and ActiveXObject("Microsoft.XMLHTTP"). As of Internet Explorer 7 (2006), all browsers support the XMLHttpRequest identifier. The XMLHttpRequest identifier is now the de facto standard in all the major browsers, including Mozilla's Gecko layout engine (2002), Safari 1.2 (2004) and Opera 8.0 (2005).

=== Standards === The World Wide Web Consortium (W3C) published a Working Draft specification for the XMLHttpRequest object on April 5, 2006. On February 25, 2008, the W3C published the Working Draft Level 2 specification. Level 2 added methods to monitor event progress, allow cross-site requests, and handle byte streams. At the end of 2011, the Level 2 specification was absorbed into the original specification. At the end of 2012, the WHATWG took over development and maintains a living document using Web IDL.

== Usage == Generally, sending a request with XMLHttpRequest has several programming steps.

Create an XMLHttpRequest object by calling a constructor: Call the "open" method to specify the request type, identify the relevant resource, and select synchronous or asynchronous operation: For an asynchronous request, set a listener that will be notified when the request's state changes: Initiate the request by calling the "send" method: Respond to state changes in the event listener. If the server sends response data, by default it is captured in the "responseText" property. When the object stops processing the response, it changes to state 4, the "done" state. Aside from these general steps, XMLHttpRequest has many options to control how the request is sent and how the response is processed. Custom header fields can be added to the request to indicate how the server should fulfill it, and data can be uploaded to the server by providing it in the "send" call. The response can be parsed from the JSON format into a readily usable JavaScript object, or processed gradually as it arrives rather than waiting for the entire text. The request can be aborted prematurely or set to fail if not completed in a specified amount of time.

== Cross-domain requests ==

In the early development of the World Wide Web, it was found possible to brea