CDNJS 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://api.cdnjs.com/api/

Result

HTTP 200 · application/json · 16,588 bytes · compressed

Response time

39 ms (median of 3) · fastest 28 ms

Transport

TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Google Trust Services

Browser CORS

Allowed — Access-Control-Allow-Origin: *

Served by

cloudflare

Recorded

2026-08-10

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Captured Response

Captured from a real request to https://api.cdnjs.com/api/ on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.

{
  "openapi": "3.0.0",
  "info": {
    "title": "cdnjs API",
    "description": "The cdnjs API allows for easy programmatic navigation of our libraries.",
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://api.cdnjs.com",
      "description": "Production"
    }
  ],
  "components": {
    "schemas": {
      "Error": {
        "…": "(4 more fields)"
      },
      "Library": {
        "…": "(3 more fields)"
      },
      "LibraryResult": {
        "…": "(2 more fields)"
      },
      "LibraryVersion": {
        "…": "(3 more fields)"
      }
    }
  },
  "paths": {
    "/libraries": {
      "get": {
        "…": "(5 more fields)"
      }
    },
    "/libraries/{library}": {
      "get": {
        "…": "(5 more fields)"
      }
    },
    "/libraries/{library}/{version}": {
      "get": {
        "…": "(5 more fields)"
      }
    },
    "/api": {
      "get": {
        "…": "(5 more fields)"
      }
    },
    "/stats": {
      "get": {
        "…": "(5 more fields)"
      }
    },
    "/whitelist": {
      "get": {
        "…": "(5 more fields)"
      }
    }
  }
}

Implementation Example

Request skeleton. The URL below is this API's documentation page, not a live endpoint — swap in the path you need from the provider's docs before running it.

const url = "https://api.cdnjs.com/libraries/jquery?fields=name,version,description?fields=name,version,description";
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://api.cdnjs.com/libraries/jquery?fields=name,version,description?fields=name,version,description"
headers = {}

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

curl -s "https://api.cdnjs.com/libraries/jquery?fields=name,version,description"

What Can You Build?

// Get repository or project information
const response = await fetch(`https://api.cdnjs.com/libraries/jquery`);
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://api.cdnjs.com/libraries/jquery`);
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://api.cdnjs.com/libraries/jquery`);
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.

{
  "error": true,
  "status": 404,
  "message": "Endpoint not found"
}

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.