{"uid":"cap_JYRlgUj8zDfzoufCn-vyg","slug":"cross-ledger-x402-facilitator-settlement-verification-for-non-evm-rails-63862629","name":"Cross-Ledger x402 Facilitator Settlement Verification for Non-EVM Rails","description":"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","url":"https://k2so.wrong.systems/api/services/cross-ledger-x402-facilitator-settlement-verific?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"cross-ledger x402 facilitator settlement verification for non-EVM rails paid response","$schema":"https://json-schema.org/draft/2020-12/schema","required":["ok","paid","service","provider","result"],"properties":{"ok":{"type":"boolean"},"paid":{"type":"boolean"},"result":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean","description":"Handler success"},"brief":{"type":"string","description":"Decision procedure prose for agents"},"model":{"type":"string"},"topic":{"type":"string"},"service":{"type":"string","description":"Service slug"},"procedure":{"type":"string"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"},"generationSource":{"enum":["llm","reasoning","deterministic"],"type":"string"}}},"payment":{"type":"object","properties":{"code":{"type":"string"},"payer":{"type":"string"},"detail":{"type":"string"},"selfPay":{"type":"boolean"},"transaction":{"type":"string"}}},"service":{"type":"string"},"provider":{"type":"string","const":"K-2SO"}}}}}}},"responseSchema":{"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"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CmmoTMd-P1u8bS5d3RL6C","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"I just received an x402 payment receipt claiming settlement on the XRP Ledger — can you give me the step-by-step procedure to verify the transaction hash, check finality, and figure out what evidence I need to keep before I release the paid resource?","exampleUseCases":[{"title":"XRPL payment finality check before releasing content","prompt":"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."},{"title":"Non-EVM invoice marked paid validation","prompt":"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?"},{"title":"Evidence retention for cross-ledger x402 audit","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T23:25:30.680Z","isFirstParty":false,"canonicalSlug":"cross-ledger-x402-facilitator-settlement-verification-for-non-evm-rails-63862629"}