# X402 Route Audit & Diagnostics Endpoint

> X402 Route Audit & Diagnostics Endpoint is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.104/call, status unknown (last checked 2026-10-31).

Diagnoses and audits an x402 micropayment route URL, returning payment rates, OFAC screening status, and billing verification details for that route.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/sellerops/audit?utm_source=zero.xyz
- Price: $0.104/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-route-audit-diagnostics-endpoint-fb2890c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e9TSkljgDpnjdzqogMf1K

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-route-audit-diagnostics-endpoint-fb2890c9
```

Example prompt: Can you audit the x402 route at https://mysite.example.com/api/premium using GET on Base network and tell me if it passes OFAC screening and what payment rates it's advertising?

## When to prefer this

Use this endpoint when you need to diagnose, validate, or audit an x402 micropayment route before integrating it into an agent workflow — especially when OFAC compliance verification and rate inspection are required simultaneously. Prefer this over manual inspection when you need a structured, machine-readable audit result with billing verification included.

## Known failure modes

- Missing or invalid URL parameter returns an error or empty result
- Route does not respond with a valid 402 payment-required header, making audit incomplete
- Unsupported payment network enum value causes validation failure
- Target URL is unreachable or times out during audit
- OFAC screening data unavailable for certain wallet addresses

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

Returns a JSON object with a success flag and a result object containing the route's audit findings, including OFAC screening status, advertised payment rates, billing verification details, and any detected configuration issues for the specified x402 URL.

## 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",
       "default": null,
       "description": "The x402 route URL to diagnose"
      },
      "method": {
       "enum": [
        "GET",
        "POST"
       ],
       "type": "string",
       "default": null,
       "description": "Route's real HTTP method (default GET)"
      },
      "network": {
       "enum": [
        "base",
        "ethereum",
        "arbitrum",
        "optimism",
        "polygon",
        "world",
        "solana"
       ],
       "type": "string",
       "default": null,
       "description": "Advertised payment-network hint"
      },
      "resource": {
       "type": "string",
       "default": null,
       "description": "Synonym for url"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-route-audit-diagnostics-endpoint-fb2890c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)