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SSL/TLS Certificate Inspector
x402
SSL/TLS Certificate Inspector is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.0022/call, status unknown (last checked 2026-09-15).
Performs a full TLS handshake inspection for a given domain and returns certificate details including issuer, subject, SANs, validity dates, days remaining, fingerprint, serial number, protocol, and cipher suite.
Price / call$0.0022
Success—
StatusUnknown
How this service works
ssl certificate checker, SSL certificate validator, check SSL certificate, SSL certificate expiration, HTTPS certificate check, SSL chain analyzer. Get full TLS handshake details for any domain: issuer, subject, SANs, validity dates, days remaining, fingerprint, serial, protocol, cipher. For AI agents, security audits, monitoring, HTTPS pipelines, tls certificate check, certificate expiry Accepts payment on Base or Solana — either network works.
Output
Returns a JSON object containing: domain, validity boolean, days remaining, validFrom/validTo timestamps, expired flag, issuer object, subject object, subjectAltNames string, serial number, SHA-256 fingerprint, TLS protocol string, cipher suite object, port, and a request timestamp.
Example use cases
Example prompt
“Can you check the SSL certificate for api.stripe.com — I want to know how many days are left before it expires, who issued it, what TLS protocol and cipher it's using, and the SHA-256 fingerprint?”
Technical details
Endpoint
GEThttps://api.x402node.dev/url/ssl-checkWhen to prefer
Use this endpoint when you need programmatic, structured TLS certificate metadata for a domain — especially for security audits, certificate expiration monitoring, HTTPS infrastructure validation pipelines, or AI agent workflows that need to assess a site's security posture. Prefer this over manual browser inspection or general-purpose HTTP tools when you need machine-readable cert details including SANs, fingerprint, cipher, and protocol in a single call.
Side effects
- Domain does not exist or is unreachable — connection timeout or DNS resolution failure
- Domain has no HTTPS listener on the specified port — connection refused
- Invalid domain format in request body — validation error
- Expired or self-signed cert may still return data but with valid=false and expired=true
- Network or TLS handshake failure on the server side — may return error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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