# agenttoll.dev x402 Seller Readiness Audit

> agenttoll.dev x402 Seller Readiness Audit is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Audits a seller's x402 payment endpoint configuration and metadata for readiness, returning a scored report of missing fields and an overall verdict.

## Facts

- Endpoint: POST https://agenttoll.dev/paid/x402/seller-readiness-audit
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-dev-x402-seller-readiness-audit-582cc2d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NRa68SiRH5BjV9cMbKm0H

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 agenttoll-dev-x402-seller-readiness-audit-582cc2d0 -d '<json body>'
```

Example prompt: Can you run an x402 seller readiness audit on my endpoint and tell me my readiness score, the overall verdict, and what metadata fields I'm still missing?

## When to prefer this

Choose this endpoint when you are an x402 seller preparing to list or improve an API product on agenttoll.dev and need a structured, scored report of your configuration gaps. Prefer this over manual checklist review when you want a machine-readable verdict and a prioritized list of missing fields ready for automated remediation.

## Known failure modes

- Invalid or unreachable seller endpoint URL — returns error with no audit results
- Missing required seller configuration payload — returns 400-level error
- Payment not included or insufficient USDC — returns 402 payment required
- Endpoint not recognized as an x402 seller — returns verdict indicating incompatible configuration

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

Returns a JSON object with the product name, a readiness score (0–100), a verdict string (e.g. 'needs_metadata_work' or 'ready'), and a list of missing metadata fields that need to be addressed.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {
      "agent_json": {
       "type": [
        "object",
        "string"
       ]
      },
      "openapi_url": {
       "type": "string",
       "maxLength": 500
      },
      "openapi_json": {
       "type": [
        "object",
        "string"
       ]
      },
      "resource_url": {
       "type": "string",
       "maxLength": 500
      },
      "expected_price": {
       "type": [
        "string",
        "number"
       ]
      },
      "route_metadata": {
       "type": [
        "object",
        "string"
       ]
      },
      "seller_address": {
       "type": "string",
       "maxLength": 80
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "missing": [],
  "product": "x402 Seller Readiness Audit",
  "summary": {
   "verdict": "needs_metadata_work",
   "readiness_score": 78
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-dev-x402-seller-readiness-audit-582cc2d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)