# Buyer-side Decision Procedure for Agents Offered Prepaid Credit Packages

> Buyer-side Decision Procedure for Agents Offered Prepaid Credit Packages is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Returns a structured decision procedure guiding an AI agent through evaluating whether to purchase a prepaid credit package from an x402 merchant.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/buyer-side-decision-procedure-for-agents-offered
- 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/buyer-side-decision-procedure-for-agents-offered-prepaid-credit-f69809b4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4bQW1I142nobsxOijE-7G

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 buyer-side-decision-procedure-for-agents-offered-prepaid-credit-f69809b4
```

Example prompt: I've been offered a prepaid credit package by an x402 merchant: 1000 credits for $5 (so $0.005 per credit), but their pay-per-call price is $0.004, the credits expire in 30 days, minimum purchase is $5, no refunds, and they don't publish a balance attestation — my remaining task budget is $20. Should I buy the prepaid package?

## When to prefer this

Use this endpoint when an AI agent has been offered a prepaid credit bundle by an x402 merchant and needs a structured, reasoned decision procedure before committing funds. It is especially valuable when the agent must weigh bulk discount pricing against expiry risk, lack of refund terms, or unverified merchant balance attestations — and when the agent's remaining task budget is a binding constraint. Prefer this over generic LLM reasoning when you want a consistent, service-specific decision framework that accounts for x402-specific risk factors like balance attestation verifiability and merchant operational history.

## Known failure modes

- Payment not received — returns 402 if x402 payment header is missing or invalid
- Malformed query parameters may result in a generic or off-topic procedure
- No topic override provided and service derives topic from endpoint slug, which may be imprecise
- LLM generation failure could result in empty or truncated brief field
- Merchant data inputs are caller-supplied and not independently verified, so output quality depends on input accuracy

## How this service works

Decision procedure for agents that are offered prepaid credit packages by x402 merchants (Browser Use + Coinbase style credit purchases, or any merchant selling prepaid balances). Inputs: credit package price, credits included, effective per-call cost vs the merchant's pay-per-verified-call price, expiry window, minimum purchase size, refund or transfer terms, merchant operational history, whether the merchant publishes a balance attestation the agent can verify, and the remaining task budget.

## Output

A prose decision procedure brief tailored for the agent, including a recommendation on whether to purchase the prepaid credit package, key evaluation factors, risk flags (e.g. no balance attestation, short expiry, no refund terms), break-even analysis versus pay-per-call pricing, and metadata such as the model used, generation timestamp, and generation source (llm, reasoning, or deterministic).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Buyer-side decision procedure for agents offered prepaid credit packages paid response",
     "$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/buyer-side-decision-procedure-for-agents-offered-prepaid-credit-f69809b4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)