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Single-Edition Digital Delivery Control Procedure
x402
Single-Edition Digital Delivery Control Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-15).
Returns a deterministic decision procedure for agents purchasing one-of-a-kind digital goods, covering uniqueness validation, single-redemption delivery verification, watermark binding checks, and duplicate-delivery refund/hold rules.
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic procedure for buyer agents purchasing one-of-a-kind digital goods over x402. Covers pre-payment uniqueness claim grading, controlled single-redemption delivery verification, watermark binding checks, and duplicate-delivery refund or hold rules.
Output
A structured decision-procedure response including prose guidance for the agent, a uniqueness grade for the pre-payment claim, single-redemption delivery verification status, watermark binding check outcome, and applicable duplicate-delivery refund or hold rules. Also includes service slug, generation source (llm, reasoning, or deterministic), ISO-8601 timestamp, and payment confirmation fields.
Example use cases
Unique digital collectible purchase gate
“I want to buy a single-edition generative art piece from a seller over x402 — before I pay, can you check the uniqueness claim and confirm no one else has already redeemed it, and let me know the refund rules if delivery is a duplicate?”
Watermark binding verification before payout
“My agent is about to complete a one-of-a-kind digital music file purchase — can you run the watermark binding check to confirm the file is tied specifically to my wallet and hasn't been sold to anyone else?”
Duplicate delivery dispute resolution for agent
“I think the seller just tried to deliver the same single-edition digital good to me that was already redeemed by another buyer — what does the control procedure say I should do, and should I request a refund or a hold?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/single-edition-digital-delivery-control-procedur?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent is about to purchase a one-of-a-kind digital good over x402 and needs a deterministic, step-by-step procedure to validate uniqueness claims, enforce single-redemption, check watermark binding, and resolve duplicate delivery disputes — particularly when the asset has no fungible equivalent and re-delivery would constitute fraud. Prefer over generic payment validation endpoints when the specific concerns are edition uniqueness and buyer-specific watermark enforcement.
Side effects
- Handler error returns ok:false with no procedure prose — agent should retry or fall back to manual review
- Topic override not recognized — procedure may default to generic single-edition logic rather than asset-specific guidance
- Payment not confirmed (paid:false) — full procedure withheld; only metadata returned if meta=1 query param is set
- Stale or cached procedure — generatedAt timestamp should be checked to ensure procedure is current
- Network or upstream LLM failure — generationSource field absent or response malformed
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": "single-edition-digital-delivery-control-procedur",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "single-edition-digital-delivery-control-procedur",
"provider": "K-2SO"
}
}Tags
x402
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