npm Package Insights

Turn a list of npm package names into clean, structured JSON — metadata and download momentum — straight from the public npm registry. No API key, no login, and no proxy required.

Why use it

• One tidy row per package. Every result is a flat JSON object, ready to drop into a spreadsheet, database or dashboard.
• Popularity built in. Alongside the metadata you get weekly and monthly download totals from the npm downloads API.
• Scoped packages welcome. @babel/core, @types/node and friends all work.
• Resilient. Popular packages that hide their README in the aggregated document are backfilled from the latest version, and a single bad name never fails the whole run.
• Zero setup. Both npm APIs are free and public, so there is nothing to configure.

Input

Field	Type	Default	Description
packages	array	required	npm package names to look up, e.g. ["react", "express", "apify"]. Scoped packages are supported.
maxResults	integer	all provided	Maximum number of packages to fetch from the list.

Example input

{
  "packages": ["react", "express", "apify"]
}

Output

Each dataset record looks like this:

{
  "name": "express",
  "description": "Fast, unopinionated, minimalist web framework",
  "latestVersion": "4.19.2",
  "license": "MIT",
  "homepage": "http://expressjs.com/",
  "repository": "git+https://github.com/expressjs/express.git",
  "keywords": ["express", "framework", "web", "middleware"],
  "author": "TJ Holowaychuk",
  "maintainersCount": 2,
  "dependenciesCount": 31,
  "devDependenciesCount": 26,
  "engines": { "node": ">= 0.10.0" },
  "weeklyDownloads": 34000000,
  "monthlyDownloads": 145000000,
  "created": "2010-12-29T19:38:25.450Z",
  "lastPublish": "2024-03-25T18:00:00.000Z",
  "readme": "# Express …",
  "npmUrl": "https://www.npmjs.com/package/express"
}

Field	Description
name	Package name.
description	Short package description.
latestVersion	The latest dist-tag version.
license	SPDX license identifier.
homepage	Project homepage URL.
repository	Source repository URL.
keywords	Array of keywords.
author	Author name.
maintainersCount	Number of maintainers.
dependenciesCount	Runtime dependency count for the latest version.
devDependenciesCount	Dev dependency count for the latest version.
engines	Declared engine constraints (e.g. Node version), if any.
weeklyDownloads	Downloads in the last week.
monthlyDownloads	Downloads in the last month.
created	When the package was first published (ISO 8601).
lastPublish	When the latest version was published (ISO 8601).
readme	Package README, truncated to ~2000 characters.
npmUrl	Link to the package page on npmjs.com.

If a package can't be fetched (for example it doesn't exist), the row is { "name": "<name>", "error": "<message>" } instead.

Pricing

This actor uses Apify's pay-per-event model. You are charged once per package-scraped event — a single charge for every package successfully delivered to the dataset. Packages that fail to fetch (the error rows) are never charged.

Data source

This actor uses the public npm APIs:

• Metadata: https://registry.npmjs.org/<package> (scoped packages URL-encode the / as %2F).
• Downloads: https://api.npmjs.org/downloads/point/last-week/<package> and .../last-month/<package>.

Both are free and require no authentication.

Author

Built and maintained by Assia Fadli. Licensed under MIT.