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Security Header Audit API
x402
Security Header Audit API is a paid API for AI agents from domain.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks a domain's HTTP security headers across 10 vectors and assigns an A-F security grade with information leakage detection
Price / call$0.01
Success—
StatusUnknown
How this service works
Security header audit — 10 headers checked: CSP, HSTS, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy, X-XSS-Protection, CORP, COEP, COOP. Information leakage detection via Server/X-Powered-By headers. A-F security grade. Accepts USDC payments on Base and Solana
Output
Returns the status of 10 security headers (CSP, HSTS, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy, X-XSS-Protection, CORP, COEP, COOP), information leakage findings from Server and X-Powered-By headers, and an overall A-F security grade for the domain.
Example use cases
Example prompt
“Can you run a full security header audit on example.com and tell me the grade it gets — especially whether it has CSP, HSTS, and X-Frame-Options set, and if the server is leaking any technology info?”
Technical details
Endpoint
GEThttps://domain.hugen.tokyo/domain/headersWhen to prefer
Use this endpoint when you need a fast, structured audit of a single domain's HTTP security posture with a letter grade. It is ideal for security compliance checks, pre-launch audits, or monitoring header regressions. Prefer it over manual curl-based checks or full-stack scanners when you specifically want header analysis with grading and information leakage detection in a single lightweight API call.
Side effects
- Domain does not exist or is unreachable — returns error or partial result
- Domain blocks external HTTP requests — headers may not be retrievable
- Payment not processed — 402 response requiring USDC payment on Base or Solana
- Invalid domain format — request rejected
- Timeout on slow-responding domain — partial or empty header results
Input
{
"domain": "example.com"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Output
{
"grade": "F",
"domain": "example.com",
"status_code": 200,
"url_checked": "http://172.66.147.243",
"headers_total": 10,
"headers_present": 0,
"security_headers": {
"Referrer-Policy": {
"value": null,
"present": false,
"description": "Controls referrer information"
},
"X-Frame-Options": {
"value": null,
"present": false,
"description": "Prevents clickjacking"
},
"X-XSS-Protection": {
"value": null,
"present": false,
"description": "XSS filter (legacy)"
},
"Permissions-Policy": {
"value": null,
"present": false,
"description": "Controls browser features"
},
"X-Content-Type-Options": {
"value": null,
"present": false,
"description": "Prevents MIME type sniffing"
},
"Content-Security-Policy": {
"value": null,
"present": false,
"description": "Controls resources the browser can load"
},
"Strict-Transport-Security": {
"value": null,
"present": false,
"description": "Enforces HTTPS connections"
},
"Cross-Origin-Opener-Policy": {
"value": null,
"present": false,
"description": "Controls cross-origin window access"
},
"Cross-Origin-Embedder-Policy": {
"value": null,
"present": false,
"description": "Controls cross-origin embedding"
},
"Cross-Origin-Resource-Policy": {
"value": null,
"present": false,
"description": "Controls cross-origin resource sharing"
}
},
"information_leakage": {
"server": "cloudflare"
}
}Tags
x402
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