Pricing

Pay per usage

SSL Certificate Monitor — Bulk Expiry & Chain Checker

Monitor SSL/TLS certificates in bulk. Expiry dates, issuer, protocol version, key size, certificate chain, SAN list. Webhook alerts for expiring certs. 5 domains free.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Manchitt Sanan

Actor stats

Bookmarked

Total users

Monthly active users

14 hours ago

Last modified

Why this exists

Expired SSL certificates cause browser warnings, lost traffic, and SEO penalties. Existing Apify SSL checkers charge $0.009/check or have 90% success rates. This actor checks more fields, costs less, and sends webhook alerts when certificates are about to expire.

Quick start

{
    "domains": ["google.com", "github.com", "example.com"],
    "checkChain": true
}

What it checks per domain

Field	Description
`valid`	Certificate is trusted (authorized by CA)
`issuer`	Certificate Authority that issued it
`subject`	Domain the cert was issued for
`validFrom` / `validTo`	Certificate validity period
`daysUntilExpiry`	Days until expiration
`expiryStatus`	`ok` (>30d), `warning` (7-30d), `critical` (<7d), `expired`
`protocol`	TLS version (TLSv1.2, TLSv1.3)
`keySize`	RSA/EC key size in bits
`signatureAlgorithm`	Signing algorithm (sha256WithRSAEncryption, etc)
`altNames`	Subject Alternative Names (all domains covered by cert)
`chain`	Full certificate chain: leaf → intermediate → root CA
`fingerprint`	SHA-256 certificate fingerprint
`serialNumber`	Certificate serial number

Input

Field	Type	Default	Description
`domains`	array	(required)	Domains to check (no https://)
`checkChain`	boolean	`true`	Include full certificate chain
`timeout`	integer	`10000`	TLS connection timeout in ms
`webhookUrl`	string	(optional)	POST alert when certs expire within 7 days
`dryRun`	boolean	`false`	Check certs without charges

Pricing

$0.003 per domain checked (pay-per-event pricing).

Errors and dry runs are never charged.
100 domains = $0.30

Webhook alerts

If webhookUrl is set, the actor POSTs a JSON alert when any certificate is expiring within 7 days or already expired:

{
    "alertType": "ssl-expiry",
    "domains": [
        {
            "domain": "example.com",
            "daysUntilExpiry": 3,
            "expiryStatus": "critical",
            "validTo": "2026-04-17T00:00:00Z"
        }
    ]
}

Use with Apify scheduled runs (daily/weekly) + webhook to Slack, PagerDuty, or email for automated certificate monitoring.

Limitations

Port 443 only. Does not check certificates on non-standard ports.
Self-signed certificates are reported as valid: false but all other fields are still populated.
Rate: Sequential checking (one domain at a time) to avoid connection floods. ~1-2 seconds per domain.

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Run on Apify

No setup needed. Click above to run in the cloud. $0.003 per operation.

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