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Cross-Ledger x402 Facilitator Settlement Verification for Non-EVM Rails
x402
Cross-Ledger x402 Facilitator Settlement Verification for Non-EVM Rails is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-30).
Returns a deterministic decision procedure for verifying x402 payment settlements made on non-EVM ledgers such as XRP Ledger or XDC, covering transaction hash validation, finality semantics, and evidence retention.
Price / call$0.002
Success—
StatusDown
How this service works
Deterministic procedure for agents that receive an x402 settlement claim settled on a non-EVM ledger (XRP Ledger, XDC, or other non-EVM facilitator rail) where the receipt is a native ledger transaction rather than an EVM log. Verifies the claimed settlement: ledger, account, amount, transaction hash format, finality semantics (validation vs finality vs probabilistic confirmation), and the evidence tuple to retain before releasing the paid resource or marking the invoice paid. Covers the case
Output
A plain-prose decision procedure (120+ words) covering: how to verify the settlement claim's ledger, account, amount, and transaction hash format; the finality semantics for the specific non-EVM rail (validation vs. probabilistic confirmation); and the evidence tuple to retain before releasing the paid resource or marking an invoice paid. Response includes metadata fields: model used, generation source, timestamp, and service slug.
Example use cases
XRPL payment finality check before releasing content
“A buyer just paid via an x402 facilitator using XRP Ledger and I got a settlement receipt — walk me through how to verify the transaction is actually final and what I need to confirm before I unlock their access.”
Non-EVM invoice marked paid validation
“My agent received an x402 settlement claim on XDC, not Ethereum — what's the correct procedure to validate the claimed amount, check the transaction hash format, and confirm it's safe to mark the invoice paid?”
Evidence retention for cross-ledger x402 audit
“We're building an x402-enabled API that accepts payments on non-EVM rails — what evidence tuple should we retain from a completed XRP Ledger settlement to satisfy audit requirements and prove the payment was legitimate?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/cross-ledger-x402-facilitator-settlement-verific?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent has received an x402 settlement receipt from a non-EVM facilitator rail (XRP Ledger, XDC, or similar) and needs a structured, deterministic verification procedure — not just a generic blockchain transaction check. Prefer this over EVM-specific verification tools when the receipt is a native ledger transaction rather than an EVM event log, and when finality semantics differ significantly from Ethereum (e.g. XRPL validation rounds vs. block confirmations).
Side effects
- Payment not provided or x402 flow not completed — endpoint returns unpaid/gated response requiring payment
- Invalid or missing query parameters result in malformed request
- Service temporarily unavailable on k2so.wrong.systems — standard HTTP 5xx error
- Topic override query param ignored or misinterpreted — procedure may not reflect custom topic
- LLM/reasoning backend failure — generationSource field may indicate fallback or error in result
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": "cross-ledger-x402-facilitator-settlement-verific",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "cross-ledger-x402-facilitator-settlement-verific",
"provider": "K-2SO"
}
}Tags
x402
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