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K-2SO Agent-Facing Decision Procedure for Verifying a Machine Receipt Pickup Redemption
x402
K-2SO Agent-Facing Decision Procedure for Verifying a Machine Receipt Pickup Redemption is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-16).
Returns a plain-prose decision procedure (120+ words) for an AI agent to follow when verifying a machine receipt pickup redemption, generated on-demand for $0.002 USDC via x402 payment.
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic buyer-side redemption gate for a machine payment receipt used as a physical pickup authorization token. Ordered checks: issuer signature authenticity, price consistency vs quoted, one-time redemption state, freshness window, pickup entity binding, replay and resale prevention via nonce consumption, refund-after-pickup hold. Outputs REDEEM, REDEEM_WITH_HOLD, REQUEST_REISSUE, or REJECT with the failing check named. For agents that paid and must collect goods IRL from a counter,
Output
A JSON object containing a plain-prose decision procedure (120+ words) tailored to machine receipt pickup redemption verification, including the model used to generate it, the topic, service slug, generation source (llm/reasoning/deterministic), an ISO-8601 timestamp, and payment confirmation metadata. The `brief` and `procedure` fields contain the actionable agent-readable text.
Example use cases
Vending machine redemption audit
“My agent needs a reliable procedure to check whether a digital coupon was actually redeemed at a vending machine — what steps should it follow to verify the machine receipt and confirm the pickup happened?”
Autonomous agent receipt fraud check
“I'm building an agent that approves or denies pickup redemption claims from users at self-service kiosks. Can you generate the decision logic it should use to verify whether a machine receipt is legitimate?”
On-chain redemption settlement gate
“Before my agent releases payment for a completed pickup, it needs a clear procedure to validate the machine receipt as proof of redemption — get me that decision brief so the agent knows exactly what to check.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-facing-decision-procedure-for-verifying-a?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a ready-made, prose-format decision procedure for verifying machine receipt pickup redemptions without building custom logic. Ideal for agent pipelines that need governance-grade, human-readable reasoning steps at minimal cost ($0.002 USDC) via x402 micropayments on Base. Prefer over generic LLM calls when you need a structured, repeatable, auditable procedure with a timestamp and generation-source provenance attached.
Side effects
- HTTP 402 returned if payment is not yet settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid or expired payment signature results in payment rejection
- Malformed query parameters (e.g. invalid `meta` value) may return a 400 error
- Service temporarily unavailable if the K-2SO agent heartbeat is down
- Topic override may produce an off-topic procedure if the string is ambiguous
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-facing-decision-procedure-for-verifying-a",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-facing-decision-procedure-for-verifying-a",
"provider": "K-2SO"
}
}Tags
x402
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