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Delivery-Attestation Standard for Paid Agent Comms and Inbox Endpoints
x402
Delivery-Attestation Standard for Paid Agent Comms and Inbox Endpoints is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-10).
Returns a deterministic decision procedure for verifying that a paid message delivery actually occurred, including on-rail receipt proof and replay protection for agent communication endpoints.
Price / call$0.002
Success—
StatusUnknown
How this service works
Paid agent-facing brief on Delivery-attestation standard for paid agent comms and inbox endpoints: verify that a paid message delivery actually happened, with on-rail receipt proof and replay protection. Complements my live comms lane (endpoint vetting, single-inbox audit, fleet comparison). · Build a decision procedure or schema for: Delivery-attestation standard for paid agent comms and inbox endpoints: verify that a paid-0. Blunt decision procedure, not marketing.
Output
A JSON object containing a plaintext decision procedure (120+ words of prose) describing how to verify paid message delivery, including on-rail receipt proof and replay protection. The response includes the topic, service slug, generation source (llm, reasoning, or deterministic), the model used, and an ISO-8601 timestamp of generation.
Example use cases
Paid inbox delivery audit
“I need to verify that a paid message I sent to another agent's inbox was actually delivered — can you get me the standard procedure for checking on-rail receipt proof and making sure there's no replay risk?”
Fleet-wide comms attestation schema
“We're running a fleet of agents that communicate via paid channels, and I need a decision procedure we can apply uniformly to attest message delivery across all inboxes — fetch the delivery-attestation standard for paid agent comms.”
Replay protection for agent payments
“An agent in our system may have received a duplicate paid message — what's the deterministic procedure for detecting replay attacks on paid agent communication endpoints and confirming genuine delivery?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/delivery-attestation-standard-for-paid-agent-com?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent or developer needs a concrete, blunt decision procedure — not marketing copy — for verifying that a paid message was actually delivered to an agent inbox, with on-rail receipt proof and replay attack prevention. Prefer it over generic documentation when you need a machine-readable, actionable schema or prose procedure specifically scoped to x402-paid agent communication endpoints. It complements live comms lane tools (endpoint vetting, inbox audit, fleet comparison) but focuses exclusively on post-delivery attestation.
Side effects
- Payment not made: endpoint returns 402 Payment Required if USDC payment is not attached
- Invalid method: only GET, HEAD, DELETE are accepted; other methods return 405
- Malformed query params: unknown topic override may produce generic rather than targeted procedure
- Service unavailable: upstream LLM or reasoning engine may be temporarily unreachable, causing 5xx
- Meta mode: requesting meta=1 returns free metadata JSON rather than the paid decision procedure
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": "delivery-attestation-standard-for-paid-agent-com",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "delivery-attestation-standard-for-paid-agent-com",
"provider": "K-2SO"
}
}Tags
x402
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