# Agent Payment Metadata Privacy and Exposure Decision Procedure

> Agent Payment Metadata Privacy and Exposure 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 2026-09-13).

Returns a paid AI-generated decision procedure brief on how autonomous agents should handle privacy and exposure of payment metadata when using x402 micropayment protocols.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-payment-metadata-privacy-and-exposure-deci
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-payment-metadata-privacy-and-exposure-decision-procedure-65b63224
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k6_zZyWsTzAD-J8ZZ47V-

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 agent-payment-metadata-privacy-and-exposure-decision-procedure-65b63224
```

Example prompt: I need a decision procedure for how my autonomous agent should handle privacy and exposure of x402 payment metadata — what should it log, hide, or share when settling USDC payments on Base?

## When to prefer this

Choose this endpoint when an autonomous agent needs structured, LLM-generated guidance specifically on how to handle privacy and disclosure of x402 payment metadata — particularly for agents operating as merchants or buyers on Base with USDC. Prefer this over generic compliance or privacy APIs when the context is specifically x402 protocol payment flows and agent-to-agent commerce.

## Known failure modes

- HTTP 402 returned if payment not settled before retry — agent must pay exact USDC amount and resend with PAYMENT-SIGNATURE header
- Payment signature mismatch or expired signature results in rejection
- Invalid or unsupported HTTP method returns error
- topic override query param ignored or misformatted may result in default topic being used
- Service temporarily unavailable on k2so.wrong.systems returns 5xx

## How this service works

Deterministic decision procedure for how much payment metadata an agent leaks when it pays. Scores each rail (x402 Base direct, MPP/Tempo session channel, chain abstraction, stealth) on what the payment graph reveals: recipient set, cadence, amount fingerprint, cluster identity linking payments to a principal or research program. Returns an exposure grade per rail, routing verdict (direct / session / segmented wallet / escalate-to-principal), and kill criteria: never reuse one wallet across

## Output

A JSON object containing a plain-prose decision procedure brief (120+ words) tailored to agent payment metadata privacy and exposure, including the generation model, ISO-8601 timestamp, generation source (llm/reasoning/deterministic), and service/provider identifiers. The 'brief' and 'procedure' fields contain actionable guidance agents can parse and act on directly.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Agent payment metadata exposure and privacy routing decision procedure paid response",
     "$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"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "brief": "plain prose decision procedure (120+ words)",
   "model": "deepseek/deepseek-v4-flash-0731",
   "topic": "string topic",
   "service": "agent-payment-metadata-privacy-and-exposure-deci",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "agent-payment-metadata-privacy-and-exposure-deci",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-payment-metadata-privacy-and-exposure-decision-procedure-65b63224/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)