# x402.shizu.me X402 Audit

> x402.shizu.me X402 Audit is a paid API for AI agents from x402.shizu.me, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Audits an x402 service's discovery surface across catalog, well-known endpoints, llms.txt, openapi.json, agent-card, and mcp-tools, returning per-check status and identified gaps

## Facts

- Endpoint: GET https://x402.shizu.me/x402audit
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-shizu-me-x402-audit-e6fc42c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_unNy53pcRIjoM1MCiJuEt

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 x402-shizu-me-x402-audit-e6fc42c0
```

Example prompt: Can you audit the x402 discovery surface for my service at api.myproject.com — I want to see which checks pass and what gaps are costing me autonomous buyers?

## When to prefer this

Use this endpoint when you need to assess or debug why an x402 service is not being discovered or used by autonomous AI agents. Ideal for service operators who want a structured checklist-based audit covering all standard x402 discovery surfaces in a single call, rather than manually probing each endpoint.

## Known failure modes

- Target service URL is unreachable or invalid — returns error indicating connectivity failure
- Target service has no x402-related endpoints — all checks fail with descriptive gap messages
- Rate limiting or network timeouts when probing the target service
- Malformed or partial discovery documents on the target service cause partial audit results

## How this service works

Audit any x402 service's discovery surface: catalog, /.well-known/x402, llms.txt, openapi.json, agent-card, mcp-tools. Returns per-check status and the gaps costing you autonomous buyers. Built from the checklist that runs this service.

## Output

A structured report containing per-check pass/fail status for each discovery surface (catalog, /.well-known/x402, llms.txt, openapi.json, agent-card, mcp-tools) and a list of identified gaps that reduce the service's discoverability and usability by autonomous AI agents.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "gaps": [
   "mcp_tools"
  ],
  "score": "4/6",
  "target": "https://example-x402.com"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-shizu-me-x402-audit-e6fc42c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.shizu.me](https://www.zero.xyz/host/x402.shizu.me/llms.txt)