# Checkout Mandate Boundary Decision Map

> Checkout Mandate Boundary Decision Map is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-09-15).

Returns a decision procedure and schema for choosing between a user-signed open Checkout Mandate and an agent-signed closed Payment Mandate when an agent reprices a cart after the user leaves.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/checkout-mandate-boundary-decision-map
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/checkout-mandate-boundary-decision-map-d6998d6c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DLJijh7s684f3jYXr4A0P

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 checkout-mandate-boundary-decision-map-d6998d6c
```

Example prompt: I need to know whether my agent should use an open Checkout Mandate signed by the user or a closed Payment Mandate signed by itself when it reprices a cart after the user has already left — can you get me the decision procedure and thresholds for that boundary call?

## When to prefer this

Choose this endpoint when an autonomous agent needs structured, authoritative guidance on whether to use a user-signed open Checkout Mandate or an agent-signed closed Payment Mandate during post-checkout cart repricing within x402 payment flows. It is especially valuable when implementing agentic checkout pipelines where the user may no longer be present and the agent must make a bounded authorization decision without human confirmation. Prefer this over general payment documentation when you need machine-readable decision logic, thresholds, and failure modes in a single paid API call.

## Known failure modes

- Payment required if meta=0 and no x402 payment header is provided — returns 402 with payment details
- Invalid HTTP method (POST, PUT, PATCH) returns error since only GET/HEAD/DELETE are accepted
- Topic override may return a procedure unrelated to mandate boundary if malformed
- Service unavailable or generation failure returns ok:false in the result object
- Network timeout or provider-side LLM/reasoning failure may produce an empty or partial brief

## How this service works

Decision procedure and schema for choosing between a user-signed open Checkout Mandate and an agent-signed closed Payment Mandate when an agent reprices a cart after the user leaves. Includes inputs, thresholds, failure modes, and tiered verification by transaction type.

## Output

A structured JSON payload containing a prose decision procedure (brief) explaining when to use a user-signed open Checkout Mandate vs an agent-signed closed Payment Mandate, including inputs, numeric thresholds, failure modes, tiered verification requirements by transaction type, the generation source (llm, reasoning, or deterministic), and an ISO-8601 timestamp of when the procedure was generated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Checkout mandate boundary decision map paid response",
     "$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": {
         "type": "string"
        },
    
… (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": "checkout-mandate-boundary-decision-map",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "checkout-mandate-boundary-decision-map",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/checkout-mandate-boundary-decision-map-d6998d6c/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)