# AsterPay Agent-Readiness Scanner

> AsterPay Agent-Readiness Scanner is a paid API for AI agents from x402.asterpay.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Scans any public website and returns a 0-100 agent-readiness score across six dimensions: MCP server, agent.json, llms.txt, OpenAPI validity, JSON-LD catalog, and x402/MPP payability.

## Facts

- Endpoint: GET https://x402.asterpay.io/v2/x402/agent-readiness
- 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/asterpay-agent-readiness-scanner-aeeaed17
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rdnahYMDvPg4KKkd2iMhg

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 asterpay-agent-readiness-scanner-aeeaed17
```

Example prompt: Can you scan stripe.com and give me its agent-readiness score — I want to know if it supports MCP, llms.txt, OpenAPI, JSON-LD, and x402 payments, and what the biggest gaps are?

## When to prefer this

Use this endpoint when you need a structured, multi-dimensional audit of whether a public website meets AI agent interoperability standards — especially if you want a single score covering MCP, llms.txt, OpenAPI, JSON-LD, and x402 payability in one call. Prefer this over manual inspection or single-signal checks when you need a normalized, comparable score across multiple domains.

## Known failure modes

- Private or loopback hostnames rejected with 4xx error
- Unreachable or non-public URLs return an error
- Malformed URL input causes validation failure
- Upstream DNS/network timeouts may return incomplete signals
- Payment not provided or incorrect amount returns 402

## How this service works

Agent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, OpenAPI validity, JSON-LD catalog and x402/MPP payability. Same published methodology as the asterpay.io checker. Paid via x402.

## Output

Returns a JSON object with a numeric score (0-100), a readiness bucket ('invisible', 'partial', or 'agent-ready'), a signals object with per-dimension earned vs weighted scores, and a top_gaps array listing the most impactful missing agent features.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Public website hostname or URL to scan (private/loopback hosts rejected)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "required": [
   "score",
   "bucket"
  ],
  "properties": {
   "score": {
    "type": "number",
    "maximum": 100,
    "minimum": 0
   },
   "bucket": {
    "enum": [
     "invisible",
     "partial",
     "agent-ready"
    ],
    "type": "string"
   },
   "signals": {
    "type": "object"
   },
   "top_gaps": {
    "type": "array"
   }
  }
 },
 "example": {
  "mcp": {
   "via": [],
   "detected": false,
   "verified": false
  },
  "url": "https://example.com/",
  "score": 60,
  "bucket": "partial",
  "openapi": {
   "valid": true,
   "security_schemes": false
  },
  "signals": {
   "llms": {
    "earned": 15,
    "weight": 15
   },
   "discoverable": {
    "earned": 25,
    "weight": 25
   }
  },
  "top_gaps": [
   {
    "label": "Agents can't pay you yet"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/asterpay-agent-readiness-scanner-aeeaed17/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.asterpay.io](https://www.zero.xyz/host/x402.asterpay.io/llms.txt)