# x402 Merchant Growth Plan & Seller Readiness Audit

> x402 Merchant Growth Plan & Seller Readiness Audit is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.019/call, status unknown (last checked 2026-10-15).

Generates a prioritized x402 and paid MCP seller growth plan including directory visibility audit, listing recommendations, pricing review, buyer onboarding steps, and retest checklist.

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/paid/x402-growth-plan?utm_source=zero.xyz
- Price: $0.019/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-merchant-growth-plan-seller-readiness-audit-c73833f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fqwjdbKMkhlcVxy92x7Km

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-merchant-growth-plan-seller-readiness-audit-c73833f7
```

Example prompt: Can you audit my x402 seller listing for 'MyDataFeed API' at https://myapi.example.com and give me a prioritized growth plan — covering directory visibility, pricing, buyer onboarding steps, and a retest checklist so I know what to fix to get more machine buyers?

## When to prefer this

Use this endpoint when an x402 or paid MCP seller wants a concrete, actionable growth plan rather than raw analytics — especially when they need directory visibility scoring, listing audit, pricing guidance, buyer onboarding steps, and a retest checklist all in one report. Prefer over generic SEO or API analytics tools when the context is specifically machine-to-machine commerce on x402/Base.

## Known failure modes

- Missing required 'input' object with 'type' and 'method' fields returns validation error
- Service URL too long (>2048 chars) or goal too long (>240 chars) causes schema rejection
- No service_name or url provided may return a generic rather than targeted plan
- Payment of $0.019 USDC via x402 not settled results in 402 Payment Required response
- Timeout if response generation exceeds 30000ms

## How this service works

Short canonical x402 merchant-readiness and seller growth-plan URL for machine buyers. Generates a prioritized directory visibility, paid MCP listing audit, pricing, buyer onboarding, and retest checklist for x402 and paid MCP sellers. Short stable alias for marketplace probes and machine buyers. Pay up to $0.019 per request with x402 USDC on Base.

## Output

Returns a structured JSON report containing a prioritized growth plan with: directory visibility score and recommendations, paid MCP listing audit findings, pricing analysis, buyer onboarding steps, and a retest checklist tailored for x402 and paid MCP sellers.

## 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",
     "properties": {
      "url": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "goal": {
       "type": "string",
       "maxLength": 240
      },
      "pages": {
       "type": "integer",
       "maximum": 3,
       "minimum": 1
      },
      "query": {
       "type": "string",
       "maxLength": 160
      },
      "pay_to": {
       "type": "string",
       "maxLength": 80
      },
      "baseUrl": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "sources": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "base_url": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "page_size": {
       "type": "integer",
       "maximum": 100,
       "minimum": 20
      },
      "timeout_ms": {
       "type": "integer",
       "maximum": 30000,
       "minimum": 3000
      },
      "service_name": {
       "type": "string",
       "maxLength": 160
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tool": {
       "type": "string"
      },
      "fetchedAt": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-merchant-growth-plan-seller-readiness-audit-c73833f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)