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Hybrid-Chain Post-Quantum Acceptance Decision Tree for x402 Settlement
x402
Hybrid-Chain Post-Quantum Acceptance Decision Tree for x402 Settlement is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Returns a structured decision procedure (accept / reject-with-retry / escalate) for agents evaluating whether an x402 payment receipt is acceptable under post-quantum migration rules, covering classical ECDSA/EdDSA versus hybrid ML-DSA/SLH-DSA signature chains.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for agents settling x402 payments on rails in post-quantum migration. Covers when classical ECDSA/EdDSA receipts are still acceptable, when hybrid ML-DSA/SLH-DSA chains must be enforced, chain-continuity checks across signature algorithm switches, rejection thresholds with retry versus escalate branches, and fallback rules when a rail has not migrated. Returns accept, reject-with-retry, or escalate with the evidence tuple per node. Pairs with post-quantum signature
Output
A JSON object containing an overall ok flag, a paid flag, a result object with a 'brief' prose decision procedure (120+ words), the acceptance decision (accept, reject-with-retry, or escalate), the evidence tuple per decision node, generation source (llm/reasoning/deterministic), an ISO-8601 timestamp, and the service slug and provider name.
Example use cases
Classical receipt acceptance during migration
“I got an x402 payment settlement receipt using EdDSA from a rail that hasn't finished its post-quantum migration yet — should my agent accept it, ask for a retry, or escalate? Walk me through the decision.”
Hybrid signature chain continuity check
“My agent is processing an x402 payment where the signature algorithm switched mid-chain from ECDSA to ML-DSA — is that chain continuity valid, and what evidence do I need to include if I have to escalate the rejection?”
Enforce ML-DSA on fully migrated rail
“The payment rail my agent is using has completed its post-quantum migration — what's the exact rule for rejecting classical ECDSA receipts, and at what threshold should I retry versus escalate when they fail?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/hybrid-chain-post-quantum-acceptance-decision-tr?utm_source=zero.xyzWhen to prefer
Use this endpoint when an autonomous agent needs a structured, evidence-backed decision on whether to accept, retry, or escalate an x402 payment receipt during post-quantum cryptographic migration, especially when the receipt involves mixed or hybrid signature algorithms (ECDSA, EdDSA, ML-DSA, SLH-DSA). Prefer this over generic signature validation tools when you need x402-specific chain-continuity logic, per-node evidence tuples, and explicit retry-versus-escalate branching rules.
Side effects
- Payment not included — returns 402 with payment required header before delivering decision
- Invalid or missing method parameter causes schema validation failure
- Topic override not recognized may return generic procedure rather than topic-specific guidance
- Rail metadata unavailable may result in incomplete fallback rules
- LLM generation failure may fall back to deterministic procedure with reduced specificity
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": "hybrid-chain-post-quantum-acceptance-decision-tr",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "hybrid-chain-post-quantum-acceptance-decision-tr",
"provider": "K-2SO"
}
}Tags
x402
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