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DomainAudit HTTP Security Headers Grader
x402
DomainAudit HTTP Security Headers Grader is a paid API for AI agents from domainaudit.genexxis.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).
Grades a web page A-F on HTTP security headers, returning per-check pass/fail results with current header values and concrete remediation advice.
Price / call$0.005
Success—
StatusUnknown
How this service works
Deterministic security audit of a website or domain, computed live: HTTP security headers graded A-F with a fix per failed check, TLS certificate and protocol (expiry, chain trust, hostname match, legacy TLS), email anti-spoofing (SPF with recursive DNS-lookup count, DMARC, MTA-STS, TLS-RPT, BIMI, DKIM on common selectors), DNS (A/AAAA/NS/CAA), RDAP registration data, security.txt and robots.txt. The full audit returns a 0-100 score and the top 5 fixes. Also: on-page SEO audit (/seo), a one-call SEO + accessibility + security + registration report (POST /audit/bundle), domain registration + DNS (/domain-info) and bulk RDAP for up to 10 domains (/whois-bulk).
Output
A JSON object containing the URL, an A-F letter grade, a numeric score, the HTTP status code of the page, and an array of individual checks — each with a check ID (e.g. 'hsts', 'csp', 'x_content_type_options'), a pass/fail boolean, the current header value (or null if absent), and a concrete fix string for failing checks.
Example use cases
Pre-launch security header review
“We're about to launch our new site at https://launch.myapp.io — can you audit all its HTTP security headers and tell me what grade it gets, which checks fail, and exactly what headers to add to fix each issue?”
Client website security report
“I need a security header audit for my client's site https://www.clientbrand.com — grade it A-F and list every check like HSTS, CSP, X-Content-Type-Options, framing, and Referrer-Policy with the current value and a concrete fix for anything that fails.”
Catching server version leakage
“Check https://api.oldstack.net for HTTP security header issues, especially whether it's leaking server version info, and tell me what score it gets and how to fix the problems.”
Technical details
Endpoint
GEThttps://domainaudit.genexxis.com/headers?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a structured, per-header breakdown with letter grades and actionable fix strings for HTTP security headers specifically. It is more focused than a full-stack domain audit endpoint and cheaper per call; prefer it when you only need header analysis without TLS certificate details, DNS records, or RDAP data. Ideal for CI/CD pipelines, pre-launch checklists, or security review workflows targeting a single URL.
Side effects
- Invalid or unreachable URL returns an error — ensure the target is publicly accessible
- Non-HTTPS URLs may return limited results since some checks require TLS
- DNS resolution failure for the provided hostname results in an error response
- Timeout if the target server is slow to respond
- Paywalled or bot-blocked sites may return unexpected HTTP status codes affecting check accuracy
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/",
"grade": "F",
"score": 15,
"checks": [
{
"id": "hsts",
"fix": "Add Strict-Transport-Security: max-age=31536000; includeSubDomains",
"pass": false,
"value": null
},
{
"id": "x_content_type_options",
"fix": null,
"pass": true,
"value": "nosniff"
}
],
"status": 200
}
}Tags
x402
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