SSL Certificate Monitor

What does SSL Certificate Monitor do?

SSL Certificate Monitor audits the TLS certificate of any list of domains in a single run. It checks issuer, validity window, days-to-expiry, chain validity, subject alternative names (SANs) and negotiated protocol, plus HTTP/HTTPS reachability. It flags certificates that are expired, expiring soon or invalid. Paste bare domains or full URLs — they're auto-cleaned to the apex. Turn on monitoring to catch renewals and upcoming expiries before they take a site down. DNS, WHOIS, email-auth and blacklist checks are available too for a full domain audit.

How to use this actor

• 👉 Register for a free Apify account — no credit card required.
• 🎉 Just click Sign up free on Apify → and complete a quick signup.
• 💰 A free Apify account includes $5 in monthly credits — enough to test this actor.
• ⏳ Scrape during the free trial, with no commitment or upfront payment required.

Key features

• 🔒 Full certificate detail — issuer, subject, valid-from / valid-to, days-to-expiry, chain validity, SANs and negotiated TLS protocol, parsed for every domain.
• ⏰ Expiry & validity flags — SSL_EXPIRED, SSL_EXPIRING_SOON (≤30 days) and SSL_INVALID surface the certificates that need attention now, so nothing lapses unnoticed.
• 🌐 HTTP/HTTPS status — status codes for both schemes plus whether the site upgrades http to https, flagging domains with no HTTPS redirect.
• ♻️ Certificate monitoring — incremental mode flags NEW / UPDATED domains and detects certificate renewals and fingerprint changes since the previous run.
• 🧩 Full audit option — enable DNS, WHOIS, email-authentication and blacklist checks for complete domain data alongside the certificate signals.
• 🔔 Notifications — push new findings to Telegram, Discord, Slack, WhatsApp or a generic webhook (n8n / Make / Zapier).
• 📦 Compact + MCP output — a compact at-a-glance mode and MCP-connector export for AI-agent and automation workflows.

What data can you get for each domain?

Each result includes Core domain fields (domain, inputUrl, securityScore, flags, dns, whois, ssl, and http, and more). In standard mode, all fields are always present — unavailable data points are returned as null, never omitted. In compact mode, only core fields are returned.

Input

Configure the actor through the input schema in Apify Console.

Key parameters:

• domains — Domains or full URLs to inspect — one per line, or paste a JSON array. Full URLs are auto-cleaned to the apex domain (https://www.example.com/path → example.com).
• checks — Which inspections to run per domain. Defaults to the SSL set (certificate + HTTP/HTTPS); enable DNS/WHOIS/email/blacklist too for a full audit. (default: ["ssl","http"])
• recordTypes — Which DNS record types to resolve when the DNS check is enabled. (default: ["A","AAAA","MX","TXT","CNAME","NS","SOA","CAA"])
• dkimSelectors — DKIM cannot be enumerated, so common selectors (default, google, selector1/2, k1…) are probed automatically. Add your ESP's selector here to catch custom setups. (default: [])
• compact — At-a-glance verdict only (domain, security score, email grade, flags) — drops the raw record blocks. Ideal for AI-agent / MCP workflows. (default: false)
• excludeEmptyFields — Drop null, empty-string, and empty-array fields from each record before push. Smaller payloads for AI agents and dashboards. (default: false)
• incrementalMode — Compare each domain against the previous run and flag changes (NEW / UPDATED / UNCHANGED). Detects cert renewals, WHOIS expiry, DNS changes, email-auth drift and blacklist appearances over time. stateKey is optional — defaults to a stable key derived from the domain list + checks. (default: false)
• stateKey — Optional. Stable identifier for the monitored domain set. Leave empty to auto-generate from the domain list + checks.
• emitUnchanged — When monitoring, also output domains whose signals did not change since the last run. Off = only NEW and UPDATED domains are emitted. (default: false)
• telegramToken — Telegram bot token (from @BotFather). Required for Telegram notifications.
• telegramChatId — Telegram chat or channel ID (e.g. "-100123456789"). Required when telegramToken is set.
• ...and 12 more parameters

Input examples

Basic search — Pick one or more checks from the supported taxonomy.

→ Full payload per result — all standard fields populated where the source provides them.

{
  "checks": [
    "dns"
  ]
}

Incremental tracking — Only emit domains that changed since the previous run with this stateKey.

→ First run builds the baseline state. Subsequent runs emit only records that are new or whose tracked content changed. Set emitUnchanged: true to include unchanged records as well.

{
  "checks": [
    "dns"
  ],
  "incrementalMode": true,
  "stateKey": "dns-tracker"
}

Compact output for AI agents — Return only core fields for AI-agent and MCP workflows.

→ Small payload with the most important fields — ideal for piping into LLMs without token overhead.

{
  "checks": [
    "dns"
  ],
  "compact": true
}

Output

Each run produces a dataset of structured domain records. Results can be downloaded as JSON, CSV, or Excel from the Dataset tab in Apify Console.

Example domain record

{
  "domain": "github.com",
  "inputUrl": "github.com",
  "securityScore": 100,
  "ssl": {
    "ok": true,
    "subject": "github.com",
    "issuer": "Sectigo Limited",
    "altNames": [
      "github.com",
      "www.github.com"
    ],
    "validFrom": "Jul  3 00:00:00 2026 GMT",
    "validTo": "Sep 30 23:59:59 2026 GMT",
    "daysToExpiry": 74,
    "expired": false,
    "certSha256": "17:F8:FD:2E:3F:D2:C1:13:FC:B9:77:2D:8A:4B:AB:B8:52:2D:D0:6D:D0:79:49:15:A4:FF:98:B1:B6:86:3A:00",
    "protocol": "TLSv1.3"
  },
  "http": {
    "http": {
      "status": 200,
      "finalUrl": "https://github.com/",
      "redirected": true,
      "server": "github.com"
    },
    "https": {
      "status": 200,
      "finalUrl": "https://github.com/",
      "redirected": false,
      "server": "github.com"
    },
    "upgradesToHttps": true
  },
  "checkedAt": "2026-07-18T13:05:18.587Z",
  "source": "ssl-certificate-monitor"
}

Incremental fields

When incremental mode is on, each record also carries:

• changeType — one of NEW, UPDATED, UNCHANGED, REAPPEARED, EXPIRED. Default output covers NEW / UPDATED / REAPPEARED; set emitUnchanged: true to opt into the others.

How to audit domains

1. Go to SSL Certificate Monitor in Apify Console.
2. Configure the input.
3. Set maxResults to control how many results you need.
4. Click Start and wait for the run to finish.
5. Export the dataset as JSON, CSV, or Excel.

Use cases

• Monitor a portfolio of domains for SSL/TLS certificates expiring soon and renew them before they lapse and break the site.
• Alert on certificate changes — a new issuer or fingerprint — across your domains as a security and change-management signal.
• Verify HTTPS is correctly configured (valid chain, http→https redirect) across many domains in one pass.
• Audit vendor or acquisition-target domains for certificate hygiene as part of due diligence.
• Combine with DNS, WHOIS and email-auth checks for a full security-posture review of a domain portfolio.

How much does it cost to audit domains?

SSL Certificate Monitor uses pay-per-event pricing. You pay a small fee when the run starts and then for each result that is actually produced.

• Run start: $0.00005 per run
• Per result: $0.001 per domain record

Example costs:

• 10 results: $0.01
• 25 results: $0.025
• 100 results: $0.1
• 200 results: $0.2
• 500 results: $0.5

Example: recurring monitoring savings

These examples compare full re-scrapes with incremental runs at different churn rates. Churn is the share of domains that are new or whose tracked content changed since the previous run. Actual churn depends on your query breadth, source activity, and polling frequency — the scenarios below are examples, not predictions.

Example setup: 250 results per run, daily polling (30 runs/month). Event-pricing examples scale linearly with result count.

Churn rate	Full re-scrape run cost	Incremental run cost	Savings vs full re-scrape	Monthly cost after baseline
5% — stable niche query	$0.25	$0.01	$0.24 (95%)	$0.38
15% — moderate broad query	$0.25	$0.04	$0.21 (85%)	$1.13
30% — high-volume aggregator	$0.25	$0.08	$0.17 (70%)	$2.25

Full re-scrape monthly cost at daily polling: $7.50. First month with incremental costs $0.61 / $1.34 / $2.43 for the 5% / 15% / 30% scenarios because the first run builds baseline state at full cost before incremental savings apply.

Platform usage is included in the per-result fee shown above.

FAQ

How many domains can I check per run?

Every domain in your input list is checked — there is no fixed cap, so the number of domains per run is limited only by your list size and the run's time budget.

Does SSL Certificate Monitor support recurring monitoring?

Yes. Enable incremental mode to only receive new or changed domains on subsequent runs. This is ideal for scheduled monitoring where you want to track changes over time without re-processing the full dataset.

Can I integrate SSL Certificate Monitor with other apps?

Yes. SSL Certificate Monitor works with Apify's integrations to connect with tools like Zapier, Make, Google Sheets, Slack, and more. You can also use webhooks to trigger actions when a run completes.

Can I use SSL Certificate Monitor with the Apify API?

Yes. You can start runs, manage inputs, and retrieve results programmatically through the Apify API. Client libraries are available for JavaScript, Python, and other languages.

Can I use SSL Certificate Monitor through an MCP Server?

Yes. Apify provides an MCP Server that lets AI assistants and agents call this actor directly. Use compact mode and excludeEmptyFields to keep payloads manageable for LLM context windows.

Is it legal to audit domains?

This actor queries publicly available DNS, WHOIS, certificate and reputation data for the domains you provide. Looking up public domain data is generally legal, but you should ensure your use complies with applicable laws and the queried services' terms, including GDPR where relevant.

Your feedback

If you have questions, need a feature, or found a bug, please open an issue on the actor's page in Apify Console. Your feedback helps us improve.

You might also like

• Domain Intelligence Scraper — All-in-one domain audit: DNS, WHOIS, SSL, HTTP, email authentication and blacklist checks with a.
• Email Deliverability Checker — SPF, DMARC, DKIM and DNSSEC audit with an A-F inbox-readiness grade for sending domains.
• DNS Lookup — Bulk DNS record lookup: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA and DNSSEC per domain.

Getting started with Apify

New to Apify? Create a free account with $5 credit — no credit card required.

1. Sign up — $5 platform credit included
2. Open this actor and configure your input
3. Click Start — export results as JSON, CSV, or Excel

Need more later? See Apify pricing.