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netintel TLS Certificate & Security Inspector
x402
netintel TLS Certificate & Security Inspector is a paid API for AI agents from netintel.x.c00l.site, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Inspects a domain's TLS certificate, handshake details, and HTTP security headers, returning a graded security report with certificate validity, cipher suite, and expiry information.
Price / call$0.004
Success—
StatusUnknown
How this service works
Paid-per-call network intelligence API: DNS with DNSSEC, email deliverability, TLS certificate inspection, IP/ASN lookup and DNS propagation. From $0.002 a call over x402. No account, no API key.
Output
Returns a JSON object with: an overall TLS grade (e.g. 'A'), handshake details (ALPN protocol, cipher suite, negotiated TLS version), certificate details (issuer, subject, serial number, validity window, days until expiry, expiry flag, public key algorithm and curve, subject alt names, signature algorithm), and security headers assessment (grade, numeric score, per-header penalty reasons).
Example use cases
Pre-deployment security audit
“Before we go live, check the TLS certificate and security headers for app.mycompany.com — I need the overall grade, cipher suite, TLS version, days until expiry, and a list of any header issues.”
Certificate expiry monitoring alert
“Check how many days are left before the TLS certificate on payments.acmecorp.com expires, and tell me who issued it and whether it's already expired.”
Third-party vendor security review
“I need to audit the TLS setup for api.supplierxyz.com — can you pull the certificate details including the issuer, public key algorithm, subject alt names, and give me the security headers grade?”
Technical details
Endpoint
POSThttps://netintel.x.c00l.site/tlsWhen to prefer
Choose this endpoint when you need a combined TLS certificate inspection plus HTTP security headers grade in a single call, without setting up an account or API key. It is ideal for one-off audits, automated security monitoring pipelines, or vendor due-diligence checks where you want raw certificate metadata (issuer, expiry, SANs, cipher suite) alongside a scored security headers report. Prefer it over browser-based tools or paid observatory services when you need programmatic, pay-per-call access with no subscription overhead.
Side effects
- Domain does not exist or is unreachable — connection timeout or DNS failure
- Domain has no TLS listener on port 443 — handshake failure
- Self-signed or untrusted certificate — may return low grade with error details
- Payment not included or insufficient — x402 payment required response
- Malformed hostname input — validation error
Output
Schema · Response
{
"type": "json",
"example": {
"grade": "A",
"handshake": {
"alpn": "h2",
"cipherSuite": "ECDHE-ECDSA-AES128-GCM-SHA256",
"negotiatedVersion": "TLSv1.2"
},
"certificate": {
"issuer": {
"commonName": "Sectigo ECC DV"
},
"subject": {
"commonName": "github.com"
},
"validity": {
"expired": false,
"notAfter": "2026-02-05T23:59:59.000Z",
"daysUntilExpiry": 189
},
"publicKey": {
"curve": "P-256",
"algorithm": "EC"
},
"serialNumber": "72010E03F4A067FE4E796266430718F6",
"subjectAltNames": [
"github.com",
"www.github.com"
],
"signatureAlgorithm": {
"name": "ecdsa-with-SHA256"
}
},
"securityHeaders": {
"grade": "A",
"score": 88,
"reasons": [
{
"header": "…",
"points": -5,
"reason": "…"
}
]
}
}
}Tags
x402
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