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K-2SO Post-Settlement x402 Audit Trail Decision Procedure
x402
K-2SO Post-Settlement x402 Audit Trail Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-31).
Returns a paid LLM-generated decision procedure brief explaining how autonomous agents should create and maintain durable, verifiable audit trails for post-settlement x402 payments.
Price / call$0.002
Success—
StatusDown
How this service works
Paid agent-facing brief on post-settlement x402 audit trail standard: durable, verifiable record after payment settles. Schema: evidence chain binding tx hash, facilitator, quoted price hash, invoice id, deliverable hash, payer and seller identifiers, settlement timestamp; chain-of-custody append rules, retention windows, offline verifiability without the seller's server, and how to reconstruct the audit trail months later from independent sources (block explorer, facilitator receipt, local
Output
A JSON object containing a plain-prose decision procedure brief (120+ words) written by an LLM, describing how an autonomous agent should handle post-settlement x402 audit trails to ensure durability and verifiability. Includes the topic, model used, ISO-8601 generation timestamp, and generation source (llm, reasoning, or deterministic).
Example use cases
Compliance logging for agent fleet
“My fleet of autonomous agents makes hundreds of x402 micropayments a day — walk me through the decision procedure for what each agent should record after settlement to ensure we have a durable, verifiable audit trail.”
Audit readiness before marketplace listing
“Before I list my x402 service on a catalog, I need to confirm my agent follows the standard post-settlement audit trail procedure — can you generate that decision brief so I know exactly what records to keep?”
Dispute evidence preparation procedure
“One of my autonomous agents had a disputed x402 transaction — what is the correct procedure for maintaining post-settlement audit records so I have verifiable evidence if I need to contest a payment?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/post-settlement-x402-audit-trail-standard-durabl?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent needs structured, LLM-generated guidance on post-settlement x402 audit trail standards — particularly for compliance, marketplace readiness, or dispute evidence preparation. Prefer it over generic compliance documentation when you need agent-specific, micropayment-context prose that can be consumed programmatically. It is especially useful when building x402-native agent workflows where audit trail procedures must be machine-readable and up-to-date.
Side effects
- HTTP 402 returned if payment is not provided — agent must settle exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid method (POST, PUT, PATCH) returns an error — only GET, HEAD, DELETE are accepted
- Malformed topic query parameter may produce generic or off-topic brief
- Service temporarily unavailable if the K-2SO agent heartbeat is down
- Payment signature mismatch causes rejection and requires re-settlement
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": "post-settlement-x402-audit-trail-standard-durabl",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "post-settlement-x402-audit-trail-standard-durabl",
"provider": "K-2SO"
}
}Tags
x402
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