# QuietSignal HTTP Policy Inspector

> QuietSignal HTTP Policy Inspector is a paid API for AI agents from 83-29-153-50.sslip.io, paid per call via x402, $0.02/call, status down (last checked 2026-10-13).

Inspects a public HTTP(S) URL and returns observed policy signals such as HTTPS usage and HSTS headers.

## Facts

- Endpoint: GET https://83-29-153-50.sslip.io/v1/http-policy?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quietsignal-http-policy-inspector-12d26990
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_czcTriJBMCOC0BrFxFG7m

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 quietsignal-http-policy-inspector-12d26990
```

Example prompt: Can you check the HTTP policy signals for https://example.com — specifically whether it uses HTTPS and has strict transport security enabled, following up to 2 redirects?

## When to prefer this

Use this endpoint when you need a quick, machine-readable read on a public URL's HTTP transport security posture — specifically HTTPS usage and HSTS — without running a full security scanner. It is ideal for lightweight pre-integration checks, compliance spot-checks, or automated pipelines that need per-URL policy facts at low cost ($0.02/call) via USDC on Base.

## Known failure modes

- Invalid or malformed URL returns a validation error
- URL is unreachable or times out causing a failed probe response
- Redirect count exceeds the specified max_redirects limit, halting traversal early
- Non-public or private IP URLs may be rejected
- Payment failure over HTTP 402 if USDC balance is insufficient

## How this service works

QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.

## Output

Returns a JSON object with a policy schema version, a policies map (e.g. uses_https: true/false, has_strict_transport_security: true/false), the HTTP status code of the final response, the number of redirects followed, and a disclaimer that results reflect observed public signals only and are not a security audit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "format": "uri",
       "description": "Public HTTP(S) URL to inspect"
      },
      "max_redirects": {
       "type": "integer",
       "maximum": 5,
       "minimum": 0
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "schema": "http-policy/v1",
  "policies": {
   "uses_https": true,
   "has_strict_transport_security": true
  },
  "disclaimer": "Observed public HTTP policy signals only; not a security audit.",
  "status_code": 200,
  "redirect_count": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quietsignal-http-policy-inspector-12d26990/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 83-29-153-50.sslip.io](https://www.zero.xyz/host/83-29-153-50.sslip.io/llms.txt)