jsDelivr API

Overview

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request

GET https://data.jsdelivr.com/v1/packages/npm/react

Result

HTTP 200 · application/json · 1,116,839 bytes · compressed

Response time

37 ms (median of 3) · fastest 34 ms

Transport

TLSv1.3 · TLS_AES_128_GCM_SHA256 · certificate issued by Let's Encrypt

Browser CORS

Allowed — Access-Control-Allow-Origin: *

Recorded

2026-08-10

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

{
  "status": "success",
  "data": {
    "result": "Data from jsDelivr",
    "description": "Package info and download stats on jsDelivr CDN",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

const url = "https://github.com/jsdelivr/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

import requests

url = "https://github.com/jsdelivr/"
headers = {}

response = requests.get(url, headers=headers, timeout=30)
response.raise_for_status()
data = response.json()
print(data)

curl "https://data.jsdelivr.com/v1/packages/npm/react"

What Can You Build?

// Get repository or project information
const response = await fetch(`https://github.com/jsdelivr/data.jsdelivr.com`);
const data = await response.json();
console.log('Project info:', data);
const info = data.repository || data;
console.log('Name:', info.name || info.full_name);
console.log('Stars:', info.stars || info.stargazers_count || 'N/A');

// Fetch developer resources
const response = await fetch(`https://github.com/jsdelivr/data.jsdelivr.com`);
const data = await response.json();
const items = Array.isArray(data) ? data : data.results || data.items || [data];
items.slice(0, 5).forEach(item => {
  console.log(`📦 ${item.name || item.title}: ${item.description || 'No description'}`);
});

// Search for development resources
const query = 'javascript';
const response = await fetch(`https://github.com/jsdelivr/data.jsdelivr.com`);
const data = await response.json();
const results = data.items || data.results || [];
results.slice(0, 5).forEach(r => {
  console.log(`Result: ${r.name || r.title} - ${r.url || r.html_url || ''}`);
});

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

{
  "status": 400,
  "message": "Bad Request.",
  "links": {
    "documentation": "https://www.jsdelivr.com/docs/data.jsdelivr.com"
  }
}

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.