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Merchant Delivery Receipt Issuance Standard
x402
Merchant Delivery Receipt Issuance Standard 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 2026-09-15).
Returns a decision procedure for x402 merchants on how to issue verifiable proof-of-delivery receipts after an agent pays for data, compute, or a service.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for x402 merchants issuing verifiable proof-of-delivery receipts when an agent pays for data, compute, or a service. Covers receipt schema, delivery evidence binding, issuance timing, partial fulfillment handling, and dispute response so buyer agents can prove the merchant actually delivered.
Output
A structured decision procedure in prose form (the 'brief' field) covering: receipt schema definition, how to bind delivery evidence to receipts, correct issuance timing, how to handle partial fulfillment scenarios, and how to formulate dispute responses — returned alongside metadata like generation source, timestamp, model used, and service slug.
Example use cases
Implementing receipt issuance for data API
“I'm launching a paid data API that accepts x402 payments from agents and I need to know the correct receipt schema and timing rules so buyer agents can verify I actually delivered the data they paid for.”
Handling partial fulfillment disputes
“One of my agent customers is disputing a payment saying I only partially fulfilled their request — what's the standard procedure for issuing a receipt that documents partial delivery and how should I respond to the dispute?”
Binding delivery evidence to receipts
“What evidence should I bind to my proof-of-delivery receipts when selling compute via x402, and how should I structure that evidence so buyer agents can cryptographically verify the delivery happened?”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/merchant-delivery-receipt-issuance-standardWhen to prefer
Choose this endpoint when you are an x402 merchant or merchant-side agent developer who needs authoritative, structured guidance on issuing delivery receipts — particularly when you need to cover receipt schema design, evidence binding, partial fulfillment edge cases, and dispute responses in a single lookup. Prefer this over generic payment documentation when you specifically need the buyer-verifiable proof-of-delivery layer of x402 compliance.
Side effects
- Payment not included — returns 402 requiring USDC payment before content is served
- Invalid HTTP method — only GET/HEAD/DELETE accepted per schema enum
- Malformed query parameters — topic or meta values outside allowed types return validation errors
- LLM generation failure — generationSource may fall back or result field may lack 'brief' prose
- Service temporarily unavailable — upstream K-2SO reasoning service may be down
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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