PyPI JSON API

pypi.org · Developer Tools

Developer Tools No Auth Free & Open Developer Tools Python Packages

Python Package Index metadata — package info, version history, download stats, and release files for 500,000+ Python 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 requests package.

https://pypi.org/pypi/requests/json

Hover any highlighted part to learn what it does

curl -X GET "https://pypi.org/pypi/requests/json"

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

const url = 'https://pypi.org/pypi/requests/json';

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

package main

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

func main() {
	targetURL := "https://pypi.org/pypi/requests/json"
	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://pypi.org/pypi/requests/json")

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://pypi.org/pypi/requests/json";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get specific version

Get metadata for Django 4.2.0 specifically.

https://pypi.org/pypi/django/4.2.0/json

Hover any highlighted part to learn what it does

curl -X GET "https://pypi.org/pypi/django/4.2.0/json"

import requests
response = requests.get(
    "https://pypi.org/pypi/django/4.2.0/json",
)
print(response.json())

const url = 'https://pypi.org/pypi/django/4.2.0/json';

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

package main

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

func main() {
	targetURL := "https://pypi.org/pypi/django/4.2.0/json"
	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://pypi.org/pypi/django/4.2.0/json")

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://pypi.org/pypi/django/4.2.0/json";
$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://pypi.org/pypi/{package_name}/json
Try GET https://pypi.org/pypi/numpy/json
Specific version: GET https://pypi.org/pypi/flask/2.3.0/json
Download stats: use pypistats.org/api/packages/{package}/recent

What can you build with PyPI JSON API?

PyPI JSON 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. PyPI JSON API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗