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2s HTTP Security Headers Analyzer
x402
2s HTTP Security Headers Analyzer is a paid API for AI agents from 2s.io, paid per call via x402, $0.0018/call, status unknown (last checked 2026-09-14).
Fetches a URL's live HTTP response headers and grades them for security best practices, returning a letter grade, score, and per-header analysis.
Price / call$0.0018
Success—
StatusUnknown
How this service works
Fetch a URL and grade its HTTP security headers. Pass url (scheme optional — defaults to https). Returns an overall letter grade + score, the list of present/missing headers, and a per-header analysis with the live value and specific issues for: Strict-Transport-Security (HSTS max-age/includeSubDomains), Content-Security-Policy (flags 'unsafe-inline'/'unsafe-eval'/missing default-src), X-Frame-Options or CSP frame-ancestors (clickjacking), X-Content-Type-Options (nosniff), Referrer-Policy, Permissions-Policy, and Cross-Origin-Opener/Resource-Policy. Also flags Server/X-Powered-By info disclosure. Analyzed from the target's LIVE response headers through an SSRF-guarded fetch (private/loopback targets refused) — an LLM cannot see a site's current headers. For web-app security review, vendor assessment, and CI gates.
Output
Returns a JSON object with ok status, an array of items each containing: the analyzed URL, a letter grade (e.g. 'C'), a numeric score and max score, HTTP status code, per-header breakdown with issues and presence flags, lists of missing and present security headers, the final redirect URL, and any server/x-powered-by info disclosure found.
Example use cases
Example prompt
“Can you check the HTTP security headers on https://example.com and tell me what grade it gets, what's missing, and whether it's leaking any server info?”
Technical details
Endpoint
GEThttps://2s.io/api/security/http-headersWhen to prefer
Use this endpoint when you need a live, real-time audit of a specific URL's HTTP security headers — including grade, score, per-header issues, and info disclosure — without signing up or managing API keys. Prefer over static scanners when you need ground-truth data from the actual live response.
Side effects
- Invalid or unreachable URL returns error or non-200 status
- URL with no scheme may still resolve but could cause ambiguous results
- Sites behind CAPTCHA or bot protection may return unexpected headers
- Payment failure (402) if USDC balance insufficient
- Timeout if target URL is slow to respond
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://example.com"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"items": [
{
"url": "https://example.com/",
"note": "Graded from the target’s live HTTP response headers (SSRF-guarded fetch). Private/loopback targets are refused.",
"grade": "F",
"score": 0,
"source": {
"url": "https://2s.io/security/http-headers",
"license": "Computed by 2s.io from the target’s live HTTP response headers.",
"provider": "2s.io HTTP security-header analyzer (live fetch)"
},
"status": 200,
"headers": [
{
"value": null,
"header": "strict-transport-security",
"issues": [
"missing HSTS"
],
"weight": 3,
"present": false
},
{
"value": null,
"header": "content-security-policy",
"issues": [
"missing CSP"
],
"weight": 3,
"present": false
},
{
"value": null,
"header": "x-frame-options",
"issues": [
"no X-Frame-Options and no CSP frame-ancestors (clickjacking risk)"
],
"weight": 2,
"present": false
},
{
"value": null,
"header": "x-content-type-options",
"issues": [
"missing x-content-type-options"
],
"weight": 2,
"present": false
},
{
"value": null,
"header": "referrer-policy",
"issues": [
"missing referrer-policy"
],
"weight": 1,
"present": false
},
{
"value": null,
"header": "permissions-policy",
"issues": [
"missing permissions-policy"
],
"weight": 1,
"present": false
},
{
"value": null,
"header": "cross-origin-opener-policy",
"issues": [
"missing cross-origin-opener-policy"
],
"weight": 1,
"present": false
},
{
"value": null,
"header": "cross-origin-resource-policy",
"issues": [
"missing cross-origin-resource-policy"
],
"weight": 1,
"present": false
}
],
"missing": [
"strict-transport-security",
"content-security-policy",
"x-frame-options",
"x-content-type-options",
"referrer-policy",
"permissions-policy",
"cross-origin-opener-policy",
"cross-origin-resource-policy"
],
"present": [],
"finalUrl": "https://example.com/",
"maxScore": 14,
"infoDisclosure": {
"server": "cloudflare",
"xPoweredBy": null
}
}
],
"total": 1,
"source": {
"url": "https://2s.io/security/http-headers",
"license": "Computed by 2s.io from the target’s live HTTP response headers.",
"provider": "2s.io HTTP security-header analyzer (live fetch)"
}
},
"meta": {
"cost": {
"usd": 0.0018,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "security.http-headers",
"settlement": {
"txHash": "0x009aae1757002304700e0bf4285f76be3d0d817cf3c889c578509c8f93c24785",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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