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agent402.tools HTTP Security Headers Analyzer
x402
agent402.tools HTTP Security Headers Analyzer is a paid API for AI agents from agent402.tools, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Fetches HTTP response headers from a URL and performs a scored security analysis covering HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and COOP/CORP/COEP.
Price / call$0.003
Success—
StatusUnknown
How this service works
Fetch a URL and return every response header plus a security analysis: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP/CORP/COEP. Scores 0–100 by presence, flags weak HSTS, and warns on Server/X-Powered-By identity leaks. SSRF-protected.
Output
Returns all HTTP response headers from the target URL plus a 0–100 security score based on the presence and quality of headers like HSTS (with weak-configuration flags), CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP, CORP, and COEP, along with warnings for information-leaking headers like Server or X-Powered-By.
Example use cases
Example prompt
“Can you fetch the HTTP headers from https://example.com and give me a security score with analysis of their HSTS, CSP, X-Frame-Options, and any other security headers — I want to know what's missing or weak?”
Technical details
Endpoint
POSThttps://agent402.tools/api/http-headersWhen to prefer
Choose this endpoint when you need a structured security header audit with a numeric score and per-header analysis rather than just raw header values. Ideal for automated security checks, CI/CD pipelines, or compliance reviews where you need to know not just what headers are present but whether they are correctly configured (e.g., weak HSTS max-age, missing CSP directives).
Side effects
- URL is unreachable or times out — error returned with no headers or score
- Non-public or localhost URL provided — rejected or no response
- Invalid URL format — validation error before any request is made
- HTTP redirect loops or TLS errors — connection failure reported
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public http(s) URL to probe |
| method | string | GET or HEAD (default GET) |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/",
"status": 200,
"headers": {
"server": "ECAcc (nyd/D17C)",
"content-type": "text/html; charset=UTF-8"
},
"finalUrl": "https://example.com/",
"security": {
"score": 0,
"findings": [
{
"value": null,
"header": "HSTS",
"present": false
}
],
"warnings": [
"Server header leaks identity: ECAcc (nyd/D17C)"
]
},
"fetchedAt": "2026-06-19T22:00:00.000Z",
"redirected": false,
"statusText": "OK",
"httpVersion": null
}
}Tags
x402
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