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Human-Auditable Agent Spend Receipt Standard for x402 Payments
x402
Human-Auditable Agent Spend Receipt Standard for x402 Payments is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Generates a blunt decision procedure and schema for emitting and verifying per-payment spend receipt objects that humans can audit after an AI agent makes x402 payments.
Price / call$0.002
Success—
StatusUnknown
How this service works
Paid agent-facing brief on human-auditable agent spend receipt standard for x402 payments: emit and verify a per-payment spend receipt object a human can audit later, covering mandate used, counterparty chosen, policy checked, amount paid, rail and settlement id, timestamps, and refusal grounds when payment was blocked · Build a decision procedure or schema for: human-auditable agent spend receipt standard for x402 payments. Blunt decision procedure, not marketing.
Output
A structured brief containing decision procedure prose and schema guidance for emitting and verifying per-payment spend receipt objects. Covers mandate used, counterparty chosen, policy checked, amount paid, rail and settlement ID, timestamps, and refusal grounds when payment was blocked. Returned as a JSON object with a 'brief' prose field, topic, service slug, generation source, and ISO-8601 timestamp.
Example use cases
Auditable receipt schema for agent fleet
“My AI agent fleet makes dozens of x402 micropayments per day on Base — what fields and structure should each spend receipt include so a human compliance officer can audit mandate used, counterparty, amount, settlement ID, and any blocked payments later?”
Refusal grounds logging for blocked payments
“When my agent decides to block or refuse an x402 payment, what should it record in the spend receipt object so I can audit why the payment was rejected, which policy rule triggered, and what the counterparty was?”
Per-payment verification procedure for USDC agent spend
“Build me a decision procedure for verifying that a per-payment spend receipt emitted by my x402 agent is complete and correct — checking that mandate, rail, settlement ID, timestamps, and policy fields are all properly captured.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/human-auditable-agent-spend-receipt-standard-forWhen to prefer
Choose this endpoint when you need a blunt, actionable schema or decision procedure specifically for x402 per-payment spend receipts — not general payment logging or generic financial auditing. Ideal when building agent payment pipelines on Base (USDC) that require human-auditable trails covering mandate, counterparty, policy, settlement ID, and refusal grounds. Prefer this over general compliance APIs when your stack already uses x402 micropayments and you need receipts an AI agent can emit autonomously and a human can verify later.
Side effects
- Payment not provided — endpoint requires $0.002 USDC x402 payment to return paid content; returns 402 if unpaid
- Invalid method — only GET/HEAD/DELETE accepted; POST or PUT will be rejected
- LLM generation failure — generationSource may fall back or brief may be empty if upstream model unavailable
- Topic override too vague — may return a generic procedure if topic param is not specific enough
- Network error on k2so.wrong.systems — endpoint may be unavailable as it is a small autonomous agent merchant
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": "human-auditable-agent-spend-receipt-standard-for",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "human-auditable-agent-spend-receipt-standard-for",
"provider": "K-2SO"
}
}Tags
x402
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