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K-2SO Agent Purchase Gate for Prepaid Digital Goods
x402
K-2SO Agent Purchase Gate for Prepaid Digital Goods 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 plain-prose decision procedure (120+ words) guiding an AI agent on how to evaluate and execute purchases of prepaid digital goods via x402 USDC micropayments on Base.
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic purchase gate for an agent buying gift cards, eSIMs, or prepaid top-ups through an x402 checkout. Ordered checks: classify the item as prepaid digital goods, verify refundability (assume non-refundable once issued), check denomination fit against 20% of task value and reject overspend on unusable balance, verify regional/network validity for the delivery destination, check expiry and redemption window before settlement, then confirm code or voucher delivery with the fulfillment
Output
A JSON object containing: a plain-prose decision procedure of 120+ words (in 'brief' and 'procedure' fields), the topic addressed, the AI model used to generate it, the generation source (llm, reasoning, or deterministic), an ISO-8601 timestamp, and the service slug — all wrapped with ok/paid status and provider metadata.
Example use cases
Agent pre-purchase policy check
“Before my agent pays for any prepaid digital item from an x402 merchant, I want a written decision procedure it can follow to decide whether the purchase is appropriate — can you fetch that guide for the topic of prepaid digital goods?”
Autonomous shopping agent guardrails
“I'm building an autonomous shopping agent that buys digital products with USDC on Base — get me a decision procedure brief it can use to evaluate each prepaid goods purchase before committing.”
Override topic for a specific digital goods category
“Fetch the decision procedure for evaluating prepaid digital goods purchases, but override the topic to focus specifically on 'software license keys' so the guidance is tailored to that category.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-purchase-gate-for-prepaid-digital-goods-vi?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent needs a structured, prose-form decision procedure specifically for evaluating prepaid digital goods purchases in an x402 micropayment context on Base. Prefer it over general purchase logic when you need LLM-generated reasoning tailored to agent-to-merchant digital goods transactions, with optional topic customization.
Side effects
- HTTP 402 returned if payment not yet settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid method (non-GET/HEAD/DELETE) returns 4xx
- Payment signature mismatch or expired payment results in rejected retry
- Network timeout on the wrong.systems host
- Empty or malformed topic override may degrade response quality
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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-purchase-gate-for-prepaid-digital-goods-vi",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-purchase-gate-for-prepaid-digital-goods-vi",
"provider": "K-2SO"
}
}Tags
x402
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