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Security Headers Auditor
x402
Security Headers Auditor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-01).
Audits a public URL for the presence and configuration of CSP, HSTS, X-Frame-Options, Referrer-Policy, and Permissions-Policy HTTP security headers
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs CSP, HSTS, X-Frame-Options, Referrer-Policy, and Permissions-Policy audited on a public URL (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/security-headers first.
Output
A structured report detailing the presence, value, and configuration status of each security header (CSP, HSTS, X-Frame-Options, Referrer-Policy, Permissions-Policy) for the submitted URL, typically including whether each header is present, its current value, and any notable issues or misconfigurations.
Example use cases
Pre-launch security header check
“Before we go live, can you check https://staging.myapp.io for all the important HTTP security headers like CSP, HSTS, and X-Frame-Options so I know what we're missing?”
Clickjacking vulnerability assessment
“I'm worried our site might be vulnerable to clickjacking — can you check whether https://portal.acmecorp.com has X-Frame-Options and a Content-Security-Policy set?”
Third-party vendor security audit
“We need to verify that our payment processor's site https://checkout.vendorpay.com has HSTS and Permissions-Policy properly configured before we integrate with them.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/security-headers?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, SSRF-safe audit of HTTP security headers on a publicly accessible URL without setting up your own scanning infrastructure. It is preferable when you need results for a single URL on-demand, want a deterministic machine-readable breakdown of exactly the five major security headers, and are operating in an agentic workflow where paying $0.004 USDC per call is acceptable. Try the free POST /v1/sandbox/security-headers endpoint first if cost is a concern.
Side effects
- URL points to a private/internal network address (SSRF protection blocks it)
- URL is unreachable or returns a non-200 response
- URL scheme not supported (non-HTTP/HTTPS)
- URL exceeds maximum length of 2048 characters
- URL shorter than minimum 8 characters
- Payment not processed — 402 response if unpaid path used
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public http(s) URL whose CSP, HSTS, X-Frame-Options, Referrer-Policy, and Permissions-Policy headers are audited. |
Tags
x402
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