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SSL Certificate Check
x402
SSL Certificate Check is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).
Retrieves TLS/SSL certificate details for a domain, including validity, issuer, expiry, SANs, TLS version, and cipher suite.
Price / call$0.002
Success—
StatusUnknown
How this service works
TLS certificate of a domain: whether it is valid, issuer, subject, valid-from and expiry dates, days left, all SAN hostnames, TLS version and cipher. Use for uptime/expiry monitoring or security checks.
Output
Returns whether the TLS certificate is valid, the issuer and subject details, the valid-from and expiry dates, the number of days remaining, all Subject Alternative Name (SAN) hostnames covered by the certificate, the TLS protocol version negotiated, and the cipher suite in use.
Example use cases
SSL expiry monitoring for production site
“Check the SSL certificate for api.mycompany.com — is it still valid, and how many days are left before it expires? I want to make sure we're not about to get caught out.”
Security audit of third-party domain
“I'm doing a security review — can you pull the full TLS certificate details for payments.acme.com, including the issuer, cipher suite, TLS version, and all the SAN hostnames listed on the cert?”
Non-standard port certificate inspection
“Can you check the SSL certificate on mail.example.com port 993 — I need to know if it's valid, what subject it's issued to, and when it expires?”
Technical details
Endpoint
GEThttps://bess-x402.onrender.com/v1/web/ssl?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need detailed TLS certificate metadata for a specific domain — especially for expiry monitoring, security audits, or verifying certificate configuration. Prefer this over generic HTTPS reachability checks when you need issuer, SAN list, cipher, or TLS version details. Supports non-standard ports for mail and LDAP servers.
Side effects
- Domain does not exist or is unreachable — connection error returned
- Domain has no TLS/SSL certificate configured — connection refused or handshake failure
- Invalid port specified — only 443, 8443, 465, 993, 995, or 636 are supported
- Certificate is expired or self-signed — still returns data but validity flag will be false
- Timeout if the domain is slow to respond
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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