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SSL Certificate Checker
x402
SSL Certificate Checker is a paid API for AI agents from minty-sprout.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).
Checks an SSL certificate for a given domain, returning validity, issuer, expiry date, days remaining, SANs, cipher, and TLS version.
Price / call$0.001
Success—
StatusUnknown
How this service works
SSL certificate check: validity, issuer, expiry date and days left, SANs and TLS version. Input: a domain.
Output
A JSON object containing: host, valid (boolean), issuer, subject, expiry timestamp, not_before date, days_left (integer), SANs array, TLS version string, and cipher suite name.
Example use cases
Pre-launch HTTPS security audit
“Before we go live, check the SSL certificate for app.mycompany.com — I need to know if it's valid, who issued it, and how many days are left before it expires.”
Monitor certificate expiry for client site
“Can you check the SSL cert on clientportal.acmecorp.com and tell me if it's going to expire in the next 30 days? I need the exact expiry date and days remaining.”
Verify TLS version and cipher for compliance
“I need to confirm that api.fintech-partner.com is using TLS 1.3 and a strong cipher — can you pull the full SSL certificate details for that domain?”
Technical details
Endpoint
POSThttps://minty-sprout.onrender.com/v1/ssl-cert?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, structured summary of an SSL certificate — including expiry, issuer, SANs, and TLS version — for a single domain. Prefer it over manual browser inspection or general DNS tools when an agent needs machine-readable certificate metadata for monitoring, compliance checks, or security audits.
Side effects
- Invalid or non-existent domain returns an error or empty result
- Domain has no SSL certificate (HTTP-only) may return an error
- Network timeout if the target domain is unreachable
- Malformed domain string causes a validation error
- Wildcard or multi-level subdomain resolution may differ from root domain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | A domain |
Output
Schema · Response
{
"type": "json",
"example": {
"san": [
"coinbase.com",
"*.cdp.coinbase.com"
],
"host": "coinbase.com",
"valid": true,
"cipher": "TLS_AES_256_GCM_SHA384",
"issuer": "Google Trust Services",
"expires": "2026-12-20T02:34:19+00:00",
"subject": "coinbase.com",
"days_left": 49,
"not_before": "Sep 21 01:34:31 2026 GMT",
"tls_version": "TLSv1.3"
}
}Tags
x402
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