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x402.forgemesh.io Certificate Expiry Checker
x402
x402.forgemesh.io Certificate Expiry Checker is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Checks a domain's TLS/SSL certificate and returns its issuer, subject, validity dates, and exact days remaining (or overdue) before expiration
Price / call$0.003
Success—
StatusUnknown
How this service works
Certificate expiration checker: point it at any domain and get back its certificate's issuer, subject, valid-from and valid-until dates, and exactly how many days remain before it expires, even for certificates that are already expired or fail validation. Built for renewal-reminder cron jobs, uptime monitors, and security audits that can't afford a surprise lapse.
Output
Returns the certificate's issuer name, subject, valid-from date, valid-until date, and the precise number of days remaining until expiration (negative if already expired), even for certificates that fail validation or have already lapsed.
Example use cases
Example prompt
“Check when the SSL certificate for github.com expires — I need the issuer, the valid-from and valid-until dates, and exactly how many days are left before it runs out.”
Technical details
Endpoint
POSThttps://x402.forgemesh.io/cert-expiry-checkerWhen to prefer
Use this endpoint when you need machine-readable TLS certificate expiry metadata for any domain, especially in renewal-reminder workflows, cron-based monitoring, uptime dashboards, or security audits. It handles already-expired and validation-failing certificates gracefully, making it more robust than browser-based checks.
Side effects
- Domain does not exist or is unreachable — connection timeout or DNS failure
- Domain has no TLS/SSL certificate configured — no certificate data returned
- Malformed hostname input — validation error
- Network error reaching the target host on port 443
- Certificate already expired — still returns data but days-remaining will be negative
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | hostname, e.g. example.com |
Output
Schema · Response
{
"type": "json",
"example": {
"issuer": "DigiCert Inc",
"authorized": true,
"days_until_expiry": 143
}
}Tags
x402
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