CK-12 Scraper

Extract K-12 textbook chapters, interactive simulations, practice exercises, and adaptive learning paths from CK-12. Built on spider-browser .

Get started Docs

target
ck12.org: success rate
99.9%: latency
~4ms

Quick start

Extract data in minutes.

ck12-scraper.ts

import { SpiderBrowser } from "spider-browser";

const spider = new SpiderBrowser({
  apiKey: process.env.SPIDER_API_KEY!,
});

await spider.connect();
const page = spider.page!;
await page.goto("https://www.ck12.org/browse/");

const data = await page.evaluate(`(() => {
  const subjects = [];
  document.querySelectorAll(".subject-card").forEach(el => {
    const name = el.querySelector(".subject-title")?.textContent?.trim();
    const concepts = el.querySelector(".concept-count")?.textContent?.trim();
    const description = el.querySelector(".subject-description")?.textContent?.trim();
    const grades = el.querySelector(".grade-range")?.textContent?.trim();
    if (name) subjects.push({ name, concepts, description, grades });
  });
  return JSON.stringify({ total: subjects.length, subjects: subjects.slice(0, 15) });
})()`);

console.log(JSON.parse(data));
await spider.close();

ready to run · spider-browser · TypeScript

Fetch API

One endpoint for ck12.org.

Structured JSON from ck12.org with a single POST. AI-resolved selectors, cached on the first call.

POST /fetch/ck12.org/

SubjectConcept titleGrade levelResource typeLesson countPractice problems

Try it Fetch docs

cURL

curl -X POST https://api.spider.cloud/fetch/ck12.org/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"return_format": "json"}'

Python

import requests

resp = requests.post(
    "https://api.spider.cloud/fetch/ck12.org/",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={"return_format": "json"},
)
print(resp.json())

Node.js

const resp = await fetch("https://api.spider.cloud/fetch/ck12.org/", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ return_format: "json" }),
});
const data = await resp.json();
console.log(data);

Extraction