# PennyRail HTTP Header Security Analysis

> PennyRail HTTP Header Security Analysis is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Analyzes HTTP response headers for security vulnerabilities and best-practice compliance

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/network/web.http-headers--header-security-analysis
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-http-header-security-analysis-1d0b7f28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m0LvUrGDLon55YL6JNUjU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pennyrail-http-header-security-analysis-1d0b7f28 -d '<json body>'
```

Example prompt: Can you run a security header analysis on my site's HTTP response headers — I want to know which security headers are missing or misconfigured, like CSP, HSTS, X-Frame-Options, and Referrer-Policy?

## When to prefer this

Choose this endpoint when you need automated, machine-readable analysis of HTTP security headers — especially in CI/CD pipelines, security audits, or compliance checks where you want structured output rather than a manual browser tool. Prefer it over browser DevTools or manual inspection when integrating header security checks into an agent workflow.

## Known failure modes

- Missing or empty input headers result in an error or empty analysis
- Malformed header values may cause incomplete analysis
- Unrecognized header formats may be skipped without warning
- Network or upstream service errors may return 5xx responses
- Payment not included or invalid x402 payment token causes 402 rejection

## How this service works

Machine-readable settlement service

## Output

Returns a structured security analysis of the provided HTTP headers, including which security headers are present, missing, or misconfigured, along with severity ratings and recommendations for remediation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-http-header-security-analysis-1d0b7f28/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)