crt.sh Cert Monitor — Subdomain & SSL Cert Discovery
Under maintenancePricing
from $0.15 / 1,000 certificate records
Monitor certificate-transparency logs via crt.sh (keyless, no API key) for any domain: newly issued subdomains, certificate issuers, first/last-seen dates and cert IDs. Flat one-record-per-cert output for CSV/Excel/JSON export. Ideal for attack-surface discovery and brand monitoring.
You can access the crt.sh Cert Monitor — Subdomain & SSL Cert Discovery programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.
1import { ApifyClient } from 'apify-client';2
3// Initialize the ApifyClient with your Apify API token4// Replace the '<YOUR_API_TOKEN>' with your token5const client = new ApifyClient({6 token: '<YOUR_API_TOKEN>',7});8
9// Prepare Actor input10const input = {};11
12// Run the Actor and wait for it to finish13const run = await client.actor("vhsgreed/crtsh-cert-monitor").call(input);14
15// Fetch and print Actor results from the run's dataset (if any)16console.log('Results from dataset');17console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);18const { items } = await client.dataset(run.defaultDatasetId).listItems();19items.forEach((item) => {20 console.dir(item);21});22
23// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docsThe Apify API client for JavaScript is the official library that allows you to use crt.sh Cert Monitor — Subdomain & SSL Cert Discovery API in JavaScript or TypeScript, providing convenience functions and automatic retries on errors.
Install the apify-client
$npm install apify-clientOther API clients include: