CertPost

SSL certificate monitoring for teams and agencies

CertPost monitors SSL/TLS certificates by reading the certificate a server actually serves via a live TLS handshake. It validates the full chain (leaf, intermediates, root), hostname/SAN match, and expiry, and detects certificate changes via fingerprint comparison. It works on any TLS port (443, 465, 993, 8443, etc.) over IPv4 and IPv6, monitors domain registration expiry via RDAP, watches Certificate Transparency logs for new issuances, and sends alerts by email or webhook at 30, 14, 7, and 1 days before expiry, plus a weekly all-clear digest. A free public check API is available at /api/v1/check.

Category: Monitoring & observability
Pricing: freemium · from $0
Free tier: yes
API: yes
MCP server: no
SDK: no
Open source: no

#ssl #tls #certificate-monitoring #uptime #alerts #webhooks #domain-expiry #certificate-transparency

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Listed 2026-10-21 · last verified 2026-10-21 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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API

curl https://toolgrep.com/api/products/certpost