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Run npx skillmds@latest add mearman/npm-info in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Is NPM Info free to use?

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Who published NPM Info?

Mearman (@mearman) published this skill. Their other Agent Skills are listed on their SkillMD profile.

NPM Info by mearman — Agent Skill

Name: NPM Info
Author: Mearman

File contents

Get npm Package Information

Retrieve detailed metadata for a specific npm package.

Usage

npx tsx scripts/info.ts <package-name> [options]

Arguments

Argument	Required	Description
`package-name`	Yes	The exact package name (case-sensitive)

Options

Option	Description
`--no-cache`	Bypass cache and fetch fresh data from API

Output

react
------
Description: React is a JavaScript library for building user interfaces.
Latest: 18.2.0
License: MIT
Homepage: https://react.dev
Repository: https://github.com/facebook/react

Versions (last 5):
  18.2.0 - Published 2022-06-14
  18.1.0 - Published 2022-04-26
  18.0.0 - Published 2022-03-29
  17.0.2 - Published 2021-03-10
  17.0.1 - Published 2020-12-20

Maintainers:
  - @hzoo
  - @acdlite

Script Execution (Preferred)

npx tsx scripts/info.ts <package-name> [options]

Options:

--no-cache - Bypass cache and fetch fresh data from API

Run from the npm-registry plugin directory: ~/.claude/plugins/cache/npm-registry/

Package Metadata API

GET https://registry.npmjs.org/{package}

Parameters

Parameter	Required	Description
`package`	Yes	The exact package name (case-sensitive)

Examples

Get package metadata:

https://registry.npmjs.org/react

Response Format

The response contains comprehensive package metadata:

name - Package name
versions - Object mapping version numbers to full version metadata
dist-tags - Tags like latest, next, canary
time - Timestamps for each version publish
maintainers - Array of package maintainers
description - Package description
homepage - Project homepage URL
repository - Repository information (type, URL)
bugs - Bug tracker URL or email
license - License identifier
author - Author information
keywords - Array of keywords
dependencies - Production dependencies (per version)
devDependencies - Development dependencies (per version)
peerDependencies - Peer dependencies (per version)

Repository URL Formats

The registry accepts various repository URL formats:

https://github.com/owner/repo
git+https://github.com/owner/repo
git@github.com:owner/repo
ssh://git@github.com/owner/repo

These are automatically parsed and normalized.

Caching

Package metadata is cached for 6 hours. Versions change infrequently, and most metadata remains stable between releases.

Use the --no-cache flag to bypass the cache.

Use npm-search to find packages before getting details
Use npm-exists for a quick availability check
Use npm-downloads to see usage statistics

Error Handling

Package not found: If the package doesn't exist, you'll receive a 404 response. Use npm-exists to check availability first.

Invalid package name: Package names must be valid npm package names (lowercase, can contain hyphens, underscores, periods).

Scope issues: For scoped packages like @babel/core, include the scope in the name.

---name: npm-infodescription: Get detailed metadata for an npm package including versions, dependencies, maintainers, and repository information. Use when the user asks for package details, version history, or package metadata.---# Get npm Package InformationRetrieve detailed metadata for a specific npm package.## Usage```bashnpx tsx scripts/info.ts <package-name> [options]```### Arguments| Argument | Required | Description ||----------|----------|-------------|| `package-name` | Yes | The exact package name (case-sensitive) |### Options| Option | Description ||--------|-------------|| `--no-cache` | Bypass cache and fetch fresh data from API |### Output```react------Description: React is a JavaScript library for building user interfaces.Latest: 18.2.0License: MITHomepage: https://react.devRepository: https://github.com/facebook/reactVersions (last 5): 18.2.0 - Published 2022-06-14 18.1.0 - Published 2022-04-26 18.0.0 - Published 2022-03-29 17.0.2 - Published 2021-03-10 17.0.1 - Published 2020-12-20Maintainers: - @hzoo - @acdlite```## Script Execution (Preferred)```bashnpx tsx scripts/info.ts <package-name> [options]```Options:- `--no-cache` - Bypass cache and fetch fresh data from APIRun from the npm-registry plugin directory: `~/.claude/plugins/cache/npm-registry/`## Package Metadata API```GET https://registry.npmjs.org/{package}```### Parameters| Parameter | Required | Description ||-----------|----------|-------------|| `package` | Yes | The exact package name (case-sensitive) |### ExamplesGet package metadata:```https://registry.npmjs.org/react```## Response FormatThe response contains comprehensive package metadata:- **`name`** - Package name- **`versions`** - Object mapping version numbers to full version metadata- **`dist-tags`** - Tags like `latest`, `next`, `canary`- **`time`** - Timestamps for each version publish- **`maintainers`** - Array of package maintainers- **`description`** - Package description- **`homepage`** - Project homepage URL- **`repository`** - Repository information (type, URL)- **`bugs`** - Bug tracker URL or email- **`license`** - License identifier- **`author`** - Author information- **`keywords`** - Array of keywords- **`dependencies`** - Production dependencies (per version)- **`devDependencies`** - Development dependencies (per version)- **`peerDependencies`** - Peer dependencies (per version)## Repository URL FormatsThe registry accepts various repository URL formats:- `https://github.com/owner/repo`- `git+https://github.com/owner/repo`- `git@github.com:owner/repo`- `ssh://git@github.com/owner/repo`These are automatically parsed and normalized.## CachingPackage metadata is cached for 6 hours. Versions change infrequently, and most metadata remains stable between releases.Use the `--no-cache` flag to bypass the cache.## Related- Use `npm-search` to find packages before getting details- Use `npm-exists` for a quick availability check- Use `npm-downloads` to see usage statistics## Error Handling**Package not found**: If the package doesn't exist, you'll receive a 404 response. Use `npm-exists` to check availability first.**Invalid package name**: Package names must be valid npm package names (lowercase, can contain hyphens, underscores, periods).**Scope issues**: For scoped packages like `@babel/core`, include the scope in the name.

Frequently asked questions

NPM Info