# quartermaster.surewhynot.app – x402 Audit Pro (Deep Trust Report)

> quartermaster.surewhynot.app – x402 Audit Pro (Deep Trust Report) is a paid API for AI agents from quartermaster.surewhynot.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Performs a deep premium audit of any x402 paid endpoint, including live rail coverage probing (Base/Solana), multi-rail detection, HTTP status, and latency measurement.

## Facts

- Endpoint: GET https://quartermaster.surewhynot.app/v1/x402/audit-pro
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quartermaster-surewhynot-app-x402-audit-pro-deep-trust-report-9e17a958
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jSJr3zm9zpVtMwYDYL41N

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 quartermaster-surewhynot-app-x402-audit-pro-deep-trust-report-9e17a958
```

Example prompt: Run a deep x402 audit on https://api.example.com/premium-endpoint — I want to know which payment rails it supports (Base and Solana), its HTTP status, latency, and whether it passes the full trust check.

## When to prefer this

Use this endpoint when you need a comprehensive, live assessment of an x402 endpoint beyond basic auditing — specifically when you need to confirm which blockchain rails (Base, Solana) are supported, detect multi-rail capabilities, and get real measured latency and HTTP status. Prefer this over basic x402 audit when trust verification and rail coverage are critical before integrating or paying an x402 endpoint.

## Known failure modes

- Invalid or non-x402 URL provided — endpoint returns error indicating URL is not a valid x402 endpoint
- Endpoint unreachable — returns HTTP error or timeout with latency data showing the failure
- URL not a URI format — schema validation error on the url field
- Missing required url query parameter — returns 400 bad request
- Target endpoint returns unexpected non-402 response — audit report notes non-compliance

## How this service works

Deep x402 audit: the full endpoint audit plus a live probe for rail coverage (Base/Solana), multi-rail detection, HTTP status, and latency — a premium trust report on any x402 endpoint.

## Output

A premium trust report including: live probe results for Base and Solana rail coverage, multi-rail detection status, HTTP status code, latency in milliseconds, and a comprehensive audit summary of the x402 endpoint's trustworthiness and payment rail support.

## 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": "x402 paid endpoint to deeply audit"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quartermaster-surewhynot-app-x402-audit-pro-deep-trust-report-9e17a958/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quartermaster.surewhynot.app](https://www.zero.xyz/host/quartermaster.surewhynot.app/llms.txt)