ClinicalTrials.gov Scraper

Extract clinical study listings, eligibility criteria, trial status updates, and sponsor details from ClinicalTrials.gov. Built on spider-browser .

Get started Docs

target
clinicaltrials.gov: success rate
99.9%: latency
~4ms

POST /fetch/clinicaltrials.gov/

return_format

curl -X POST https://api.spider.cloud/fetch/clinicaltrials.gov/ \
  -H "Authorization: Bearer $SPIDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"return_format": "json"}'

200 OK · cache hit · response shape

{
  "url": "https://clinicaltrials.gov/",
  "status": 200,
  "data": {
    "study_title": "string",
    "nct_number": "string",
    "status": "string",
    "sponsor": "string",
    "phase": "string",
    "eligibility": "string",
    "conditions": "string",
    "enrollment": "string"
  }
}

# ClinicalTrials.gov Scraper

**Study title**: string
**NCT number**: string
**Status**: string
**Sponsor**: string
**Phase**: string
**Eligibility**: string
**Conditions**: string
**Enrollment**: string

Quick start

Extract data in minutes.

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

clinicaltrials-gov-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://clinicaltrials.gov/search?cond=cancer&aggFilters=status:rec");
await page.content();

const data = await page.evaluate(`(() => {
  const trials = [];
  document.querySelectorAll("[data-testid='search-result'], .ct-list-item").forEach(el => {
    const title = el.querySelector("h3, .ct-list-title a")?.textContent?.trim();
    const status = el.querySelector("[class*='status'], .ct-status")?.textContent?.trim();
    const conditions = el.querySelector("[class*='condition']")?.textContent?.trim();
    const nctId = el.querySelector("[class*='nctId'], .ct-nct-id")?.textContent?.trim();
    if (title) trials.push({ title, status, conditions, nctId });
  });
  return JSON.stringify({ total: trials.length, trials: trials.slice(0, 10) });
})()`);

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

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

import requests

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

const resp = await fetch("https://api.spider.cloud/fetch/clinicaltrials.gov/", {
  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);