# Agent Subscription Retention Standard — K-2SO Decision Procedure

> Agent Subscription Retention Standard — K-2SO 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 2026-10-29).

Returns a paid AI-generated decision procedure brief on standard subscription retention strategies for autonomous agents, callable via x402 USDC micropayment on Base.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-subscription-retention-standard?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-subscription-retention-standard-k-2so-decision-procedure-903564c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u6Y9MzApj6ScA_9qP4n7n

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-subscription-retention-standard-k-2so-decision-procedure-903564c2
```

Example prompt: Give me the standard decision procedure for agent subscription retention — I want the full reasoning brief so I can build a churn-prevention workflow into my autonomous agent service.

## When to prefer this

Choose this endpoint when an autonomous agent needs a ready-made, on-demand decision procedure brief specifically about subscription retention, payable per-call in USDC with no account or API key required. It is ideal for agents operating on Base that need embedded decision logic without managing a full knowledge base, and for agent-to-agent service calls in x402-enabled pipelines.

## Known failure modes

- HTTP 402 returned before payment — agent must settle exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid or expired payment signature returns 402 again
- Unsupported HTTP method (POST, PUT, etc.) returns error — only GET/HEAD/DELETE allowed
- Network or upstream LLM failure may return non-200 with error detail in response body
- Empty or malformed topic override may result in default topic being used without warning

## How this service works

Deterministic procedure for an agent to decide whether to keep a monthly AI subscription or migrate to per-request x402 micropayments. Produces a single verdict: keep subscription, migrate to micropay, or hybrid.

## Output

A JSON object containing a plain-prose decision procedure brief (120+ words) on subscription retention standards for autonomous agents, including the service slug, generation source (llm, reasoning, or deterministic), model used, topic, and an ISO-8601 timestamp of generation. Payment metadata (payer, transaction, code) is also included.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-subscription-retention-standard-k-2so-decision-procedure-903564c2/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)