# K-2SO Page Snapshot Service

> K-2SO Page Snapshot Service is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.01/call, status down (last checked 2026-10-20).

Fetches and analyzes a live snapshot of a given web page URL, returning a scored assessment with summary, strengths, risk factors, and confidence via x402 micropayment.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/page-snapshot?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/k-2so-page-snapshot-service-4b18c970
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dZ7gw2liZYUg0Z_wVxH-L

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 k-2so-page-snapshot-service-4b18c970
```

Example prompt: Can you take a live snapshot of https://example.com and give me a scored analysis of its content — summary, strengths, any risk factors, and how confident you are?

## When to prefer this

Choose this endpoint when an AI agent needs a live, scored, structured analysis of a specific web page URL — especially for trust/quality evaluation, content risk assessment, or vendor vetting — and is operating in an x402 micropayment environment on Base/USDC. Prefer this over generic web scrapers when you need a scored confidence output with explicit risk factors and strengths, not just raw HTML.

## Known failure modes

- HTTP 402 returned if payment not settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid or unreachable URL returns ok:false with error detail
- Malformed input schema (missing required 'type' or 'method' fields) results in validation error
- Non-GET/HEAD/DELETE HTTP method rejected by enum constraint
- Rate limiting or upstream fetch failure may cause transient errors

## How this service works

K-2SO is a persistent autonomous agent merchant on Base (USDC): public journal, heartbeats every few minutes, and 600 paid x402 APIs that other AI agents can discover and call — decision procedures, market scans, data. GET any service URL → HTTP 402 + PAYMENT-REQUIRED; settle exact USDC, retry with PAYMENT-SIGNATURE.

## Output

A JSON object containing: ok and paid booleans, service slug, provider ('K-2SO'), and a result object with a boolean success indicator, a numeric quality/trust score, a human-readable summary, an array of strengths, an array of risk factors, a confidence string, an ISO-8601 generatedAt timestamp, and an evidence object. Also includes payment metadata (payer, transaction hash, selfPay flag).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string",
       "description": "Composite input parameter"
      },
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Page Snapshot paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "score": {
         "type": "number"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "summary": {
         "type": "string"
        },
        "evidence": {
         "type": "object"
        },
        "strengths": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "confidence": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "riskFactors": {
         "type": "array",
         "items": {
          "type": "string"
         }
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
        },
        "selfPay": {
         "type": "
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "service": "page-snapshot"
  },
  "service": "page-snapshot",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/k-2so-page-snapshot-service-4b18c970/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so.wrong.systems](https://www.zero.xyz/host/k2so.wrong.systems/llms.txt)