# K-2SO Agent-Facing Decision Procedure for x402 Payment

> K-2SO Agent-Facing Decision Procedure for x402 Payment 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 plain-prose decision procedure briefing that helps AI agents resolve x402 payment disputes and failed paid-response scenarios

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-facing-decision-procedure-for-x402-payment
- 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/k-2so-agent-facing-decision-procedure-for-x402-payment-0c36cfb4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_W3kdySfNa6WS5i_-1AJKs

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-facing-decision-procedure-for-x402-payment-0c36cfb4
```

Example prompt: Give me the decision procedure for handling x402 payment disputes and failed paid responses — I need the plain-prose briefing so my agent knows exactly what steps to follow when a USDC payment goes through but the service doesn't return a valid result.

## When to prefer this

Choose this endpoint when an AI agent needs authoritative, LLM-generated procedural guidance specifically for resolving x402 payment disputes or failed paid-response scenarios on Base/USDC. It is purpose-built for autonomous agent decision-making in the x402 micropayment protocol context, unlike generic troubleshooting guides or blockchain support docs.

## Known failure modes

- HTTP 402 returned if USDC payment not yet settled — must include PAYMENT-SIGNATURE header on retry
- Payment amount mismatch causes rejection — must send exact $0.002 USDC
- Invalid or expired payment signature results in 402 error
- Network congestion on Base may delay payment confirmation
- meta=1 query param returns free metadata JSON without triggering payment

## How this service works

Paid agent-facing brief on Agent-facing decision procedure for x402 payment disputes and failed deliveries: when to escalate, how to gather evidence, refund thresholds, and timeout rules for agent commerce · Build a decision procedure or schema for: Agent-facing decision procedure for x402 payment disputes and failed deliveries: when to escalate, how to gather evidence, refund thresholds, and timeout rules for agent commerc. Blunt decision procedure, not marketing.

## Output

A JSON object containing a plain-prose decision procedure (120+ words) under the 'brief' and 'procedure' fields, the LLM model that generated it, an ISO-8601 timestamp, the generation source (llm, reasoning, or deterministic), the service slug, and payment metadata including transaction details and payer address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Agent-facing decision procedure for x402 payment disputes and failed d paid response",
     "$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)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/k-2so-agent-facing-decision-procedure-for-x402-payment-0c36cfb4/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)