npm Registry API

registry.npmjs.org · Developer Tools

Developer Tools No Auth Free & Open Developer Tools npm JavaScript

The npm public registry — package metadata, download statistics, version history, and dependency info for 2M+ JavaScript packages. Free, no API key required.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Get package info

Get full metadata for the React package.

https://registry.npmjs.org/react

Hover any highlighted part to learn what it does

curl -X GET "https://registry.npmjs.org/react"

import requests
response = requests.get(
    "https://registry.npmjs.org/react",
)
print(response.json())

const url = 'https://registry.npmjs.org/react';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://registry.npmjs.org/react"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://registry.npmjs.org/react")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://registry.npmjs.org/react";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get latest version

Get the latest version of React.

https://registry.npmjs.org/react/latest

Hover any highlighted part to learn what it does

curl -X GET "https://registry.npmjs.org/react/latest"

import requests
response = requests.get(
    "https://registry.npmjs.org/react/latest",
)
print(response.json())

const url = 'https://registry.npmjs.org/react/latest';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://registry.npmjs.org/react/latest"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://registry.npmjs.org/react/latest")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://registry.npmjs.org/react/latest";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get download stats

Get last-month download count for Express.

https://registry.npmjs.org/https:/api.npmjs.org/downloads/point/last-month/express

Hover any highlighted part to learn what it does

curl -X GET "https://registry.npmjs.orghttps://api.npmjs.org/downloads/point/last-month/express"

import requests
response = requests.get(
    "https://registry.npmjs.orghttps://api.npmjs.org/downloads/point/last-month/express",
)
print(response.json())

const url = 'https://registry.npmjs.orghttps://api.npmjs.org/downloads/point/last-month/express';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://registry.npmjs.orghttps://api.npmjs.org/downloads/point/last-month/express"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://registry.npmjs.orghttps://api.npmjs.org/downloads/point/last-month/express")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://registry.npmjs.orghttps://api.npmjs.org/downloads/point/last-month/express";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

No API key needed
Package info: GET https://registry.npmjs.org/express
Latest version: GET https://registry.npmjs.org/express/latest
Specific version: GET https://registry.npmjs.org/express/4.18.0
Downloads: GET https://api.npmjs.org/downloads/point/last-week/react

What can you build with npm Registry API?

npm Registry API is a Developer Tools API. Developers commonly use developer tools APIs for:

automating code review and quality checks
integrating CI/CD pipelines and build systems
managing feature flags and A/B tests
monitoring errors and application performance
generating and validating test data

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. npm Registry API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗