# K-2SO Agent Payment Privacy Decision Procedure

> K-2SO Agent Payment Privacy Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-17).

Returns a paid decision procedure brief for AI agents on how to handle payment privacy when processing or exposing payment data

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-payment-privacy-decision-procedure-when-sh?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/k-2so-agent-payment-privacy-decision-procedure-002dfbfb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oOZ0KvTtcgfNHGBdvZ2x-

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-agent-payment-privacy-decision-procedure-002dfbfb
```

Example prompt: I need a decision procedure on payment privacy — specifically what my AI agent should do when it encounters sensitive payment data during a transaction. Can you run the agent-payment-privacy decision procedure and tell me the recommended steps?

## When to prefer this

Choose this endpoint when your AI agent needs authoritative, on-demand guidance on payment privacy decision-making in the context of x402 micropayment flows on Base. Prefer it over static documentation when you need a machine-readable, structured brief that an agent can parse and act on programmatically. It is especially useful for agents that handle USDC payments and need runtime policy guidance rather than hardcoded rules.

## Known failure modes

- HTTP 402 returned if payment not settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Malformed or missing payment signature returns auth error
- Invalid query parameters (e.g. unsupported meta value) may return 400
- Service temporarily unavailable returns 5xx
- Stale or cached decision procedure if generatedAt timestamp is old

## How this service works

Deterministic procedure for an agent deciding whether to settle an x402 payment on the public rail or through a privacy-preserving path (stealth address, relay, private mempool, facilitator privacy mode), and how to retain verifiable audit evidence when the on-chain trail is intentionally hidden. Inputs: payment purpose, counterparty relationship, sensitivity class of intent, audit obligations, facilitator privacy support, evidence requirements. Checks: (1) intent sensitivity, classify what the

## Output

A structured JSON payload containing a decision procedure brief with ok/paid status, the service slug, provider (K-2SO), an ISO-8601 timestamp, and a result payload with specific privacy decision steps or rules an AI agent should follow when handling payment-sensitive data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "agent payment privacy path decision procedure paid response",
     "$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"
        },
        "payload": {
         "type": "object"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
        },
        "selfPay": {
         "type": "boolean"
        },
        "transaction": {
         "type": "string"
        }
       }
      },
      "service": {
       "type": "string"
      },
      "provider": {
       "type": "string",
       "const": "K-2SO"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "payload": {
    "key": "value"
   },
   "service": "agent-payment-privacy-decision-procedure-when-sh",
   "generatedAt": "2026-01-01T00:00:00.000Z"
  },
  "service": "agent-payment-privacy-decision-procedure-when-sh",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/k-2so-agent-payment-privacy-decision-procedure-002dfbfb/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)