NPM Registry Packages, Maintainers & Scores Scraper

Extract structured JavaScript/TypeScript package metrics, maintainer contact emails, release history, popularity/quality/maintenance scores, keywords, and repository links from the official NPM Registry.

Features

• Rich Package Metrics: Extracts package name, version, description, author name and email, publisher username, active maintainers, GitHub repository URL, and NPM composite scores.
• Custom Ranking Strategies: Search by optimal (balanced), popularity (most downloaded), quality (code health), or maintenance (frequently updated).
• Maintainer Lead Generation: Captures verified maintainer usernames and public emails for developer outreach and B2B tech recruiting.
• Dependency & Ecosystem Monitoring: Use onlyNewItems with a stateKey to automatically get notified whenever new packages matching your tech stack or niche are published.
• High-Throughput Execution: Lightweight JSON queries consuming minimal memory (128 MB), completely bypasses DOM scraping and headless browser costs.

Input Parameters

Parameter	Type	Default	Description
searchQuery	String	"crawler"	Package keyword, topic, or search term
author	String	""	Filter by specific author/publisher username
ranking	String	"optimal"	optimal, popularity, quality, or maintenance
minScore	Number	0	Minimum overall score threshold (0.0 to 1.0)
packageNames	Array	[]	Specific package names (e.g. ["crawlee", "apify"])
maxResults	Integer	100	Maximum packages to extract
onlyNewItems	Boolean	false	Monitoring mode: only emit newly discovered packages
outputPreset	String	"full"	full, lean, or contacts

Output Example

{
  "name": "crawlee",
  "scope": null,
  "version": "3.12.0",
  "description": "The scalable web scraping and crawling library for Node.js",
  "keywords": ["crawler", "scraper", "headless", "apify"],
  "date": "2026-10-20T14:22:00.000Z",
  "npmUrl": "https://www.npmjs.com/package/crawlee",
  "authorName": "Apify Technologies",
  "publisherUsername": "apify-bot",
  "maintainers": [
    { "username": "mnmkng", "email": "dev@apify.com" }
  ],
  "homepage": "https://crawlee.dev",
  "repositoryUrl": "https://github.com/apify/crawlee",
  "scoreFinal": 0.94,
  "scoreQuality": 0.98,
  "scorePopularity": 0.92,
  "scoreMaintenance": 0.95,
  "scrapedAt": "2026-10-27T12:00:00.000Z"
}

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