You can access the Certificate Transparency Subdomain & Certificate Monitor 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.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

1from apify_client import ApifyClient
2
3# Initialize the ApifyClient with your Apify API token
4# Replace '<YOUR_API_TOKEN>' with your token.
5client = ApifyClient("<YOUR_API_TOKEN>")
6
7# Prepare the Actor input
8run_input = {}
9
10# Run the Actor and wait for it to finish
11run = client.actor("afkdigital/newapi31-certificate-transparency-monitor").call(run_input=run_input)
12
13# Fetch and print Actor results from the run's dataset (if there are any)
14print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
15for item in client.dataset(run.default_dataset_id).iterate_items():
16    print(item)
17
18# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

Certificate Transparency Subdomain Monitor API in Python

The Apify API client for Python is the official library that allows you to use Certificate Transparency Subdomain & Certificate Monitor API in Python, providing convenience functions and automatic retries on errors.

Install the apify-client

$pip install apify-client

Other API clients include:

Certificate Transparency Subdomain & Certificate Monitor API in JavaScript

Certificate Transparency Subdomain & Certificate Monitor API through CLI

Certificate Transparency Subdomain & Certificate Monitor OpenAPI definition

Certificate Transparency Subdomain & Certificate Monitor API

SSL Certificate Checker

automation-lab/ssl-certificate-checker

SSL Certificate Checker connects to domains over TLS and inspects their SSL certificates. It returns structured data about certificate validity, expiry, issuer chain, TLS protocol version, cipher suite, and a security grade from A+ to F.

Automation Lab

SSL Certificate Monitor

q_services/ssl-certificate-monitor

Check SSL/TLS certificates in bulk and monitor expiry dates, issuers, SANs and validation errors.

Q Services

SAML Metadata & Certificate Rotation Monitor

monema/saml-metadata-certificate-monitor

Track public SAML IdP federation metadata, signing-certificate expiry and rotation, SSO endpoints, and trust-sensitive changes across scheduled runs.

Maarten Vreeburg

SSL Certificate Monitor: New Certs & Subdomains

m_ctim/certificate-transparency-monitor

Search Certificate Transparency logs for newly issued SSL/TLS certificates on a domain and its subdomains. Spot unauthorized certs or newly launched subdomains — official CT log data, no proxy, no scanning.

Timothy Kelvin

Certificate Transparency & Subdomain Discovery Scraper

scrapers_lat/certificate-transparency-scraper

Discover subdomains and SSL/TLS certificates for any domain from public certificate transparency logs. Extract SAN hostnames, issuer, validity dates, wildcard and expiry flags. Perfect for attack-surface mapping, OSINT and asset inventory. Export to JSON, CSV or Excel.

Scrapers Lat

Turkey Public Tender Tracker (EKAP)

afkdigital/turkey-public-tender-tracker

Filter official Turkish public tender notices by keyword, sector text, province, date, and procurement type.

AFK Digital

TLS Certificate Monitor

junipr/tls-certificate-monitor

Monitor TLS certificates, expiry, chain health, issuer changes, and HTTPS readiness.

junipr

Certificate Transparency Log Firehose

jungle_synthesizer/certificate-transparency-log-firehose-scraper

Streams newly-issued certificates from public CT logs (Google, Cloudflare, DigiCert, Sectigo, TrustAsia) with a keyword/pattern watch-list match — delta-since-last-run, not a one-domain lookup.

BowTiedRaccoon

Certificate Transparency & DNS Subdomain Inventory

thescrapelab/subdomain-intelligence-osint

Discover subdomains from public certificate tables, validate DNS and optionally profile public pages. Includes source coverage and reports without external provider APIs.

Inus Grobler

Certificate Transparency Monitor — AI Agent Recon API

logiover/certificate-transparency-monitor

Keyless certificate transparency intelligence for AI agents: crt.sh CT logs. Track new TLS certs for any domain, discover subdomains via wildcard, batch domains. Issuer, validity, SAN domains and serial per row. No API key, no browser.