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Vextorium SSL Certificate Inspector
x402
Vextorium SSL Certificate Inspector is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).
Retrieves and analyzes the TLS/SSL certificate of a domain, returning issuer, validity dates, days remaining, SANs, trust status, TLS version, and cipher suite.
Price / call$0.003
Success—
StatusUnknown
How this service works
TLS certificate of a domain: issuer, validity dates, days until expiry, names covered (SAN), whether it matches the domain and is trusted, TLS version and cipher. For uptime and security monitoring.
Output
Returns a JSON object with: IP address, TLS version (e.g. TLSv1.3), port, list of subject alternative names, domain, issuer (e.g. Let's Encrypt), status (ok/error), subject, cipher suite, whether the cert is trusted (confidence), valid_since and valid_until timestamps, total duration_days, and remaining_days until expiry.
Example use cases
SSL expiry alert for production site
“Check the SSL certificate on api.mycompany.com — I need to know how many days are left before it expires and whether it's still trusted, so I can set up an expiry alert.”
Security audit of cipher and TLS version
“Inspect the TLS certificate on legacy.oldportal.net port 8443 — I want to see what TLS version and cipher suite it's using to make sure it's not running something outdated like TLS 1.0.”
Verify certificate covers a new subdomain
“Pull the SSL certificate details for shop.mybrand.com and tell me whether the certificate actually covers that subdomain and who issued it.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/ssl-certificate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need detailed, structured TLS certificate metadata for a single domain — including expiry countdown, issuer identity, cipher suite, TLS version, and SAN coverage — for use in uptime monitoring pipelines, security audits, or certificate lifecycle alerting. Prefer this over generic WHOIS or DNS lookups when the specific focus is SSL/TLS layer information rather than domain registration or DNS records.
Side effects
- Domain does not exist or is unreachable — status error, null fields
- Port not open or no TLS listener on specified port — connection refused
- Certificate is expired — remaining_days will be negative
- Certificate does not cover the requested domain — covers_domain: false
- Self-signed or untrusted certificate — confidence: false
- Invalid domain format in request body — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ip": "188.114.96.5",
"tls": "TLSv1.3",
"port": 443,
"names": [
"*.vextorium.com",
"vextorium.com"
],
"domain": "vextorium.com",
"issuer": "Let's Encrypt",
"status": "ok",
"subject": "vextorium.com",
"encrypted": "TLS_AES_256_GCM_SHA384",
"confidence": true,
"valid_since": "2026-09-27T13:30:10+00:00",
"valid_until": "2026-12-26T13:30:09+00:00",
"covers_domain": true,
"duration_days": 89,
"remaining_days": 84.9
}
}Tags
x402
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