{"uid":"cap_xYqhl23J4qCr3kAHurJro","slug":"settlement-finality-index-across-x402-mpp-rails-77e90037","name":"Settlement Finality Index Across x402/MPP Rails","description":"Paid agent-facing brief on settlement-finality index across x402/MPP rails: verify a paid endpoint actually settled on-chain, per-rail finality delays (Base L2, XRPL, TRON, Solana), and double-payment risk windows during retries-0. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/settlement-finality-index-across-x402-mpp-rails?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"settlement-finality index across x402/MPP rails: verify a paid endpoin paid response","$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":"settlement-finality-index-across-x402-mpp-rails","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"settlement-finality-index-across-x402-mpp-rails","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_6zWUqI6qiFERFxgXprAgx","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 paid AI-generated decision brief on settlement finality across x402/MPP payment rails, covering per-rail finality delays, on-chain verification, and double-payment risk windows during retries.","exampleAgentPrompt":"I just sent an x402 payment and want to know if it actually settled on-chain — can you give me a blunt decision procedure covering finality delays for Base L2, XRPL, TRON, and Solana, plus how long I need to wait before retrying to avoid double-payment?","exampleUseCases":[{"title":"Verify on-chain settlement before delivering service","prompt":"Before I unlock content for this agent, I need to confirm their x402 payment actually finalized on Base L2 — what's the decision procedure I should follow and how long do I need to wait?"},{"title":"Compare finality delays across payment rails","prompt":"My agent can route payments over Base L2, Solana, or XRPL — give me a blunt breakdown of how long settlement finality takes on each rail so I can pick the fastest one."},{"title":"Assess double-payment risk during retry logic","prompt":"My x402 payment timed out and I'm about to retry — what's the risk window for accidentally sending a duplicate payment, and how do I avoid it on TRON?"}],"resultDescription":"A JSON object containing a plain-prose decision procedure brief (120+ words) covering how to verify on-chain settlement for a paid x402 endpoint, per-rail finality delay times for Base L2, XRPL, TRON, and Solana, and the double-payment risk window during retries. Also includes the model used, generation timestamp, and generation source (llm, reasoning, or deterministic).","failureModes":["Payment not confirmed — endpoint requires $0.002 USDC x402 payment before returning paid content","Invalid HTTP method — only GET, HEAD, DELETE are accepted","Topic override not recognized — may return generic finality brief rather than scoped procedure","LLM generation failure — generationSource may fall back to deterministic or cached response","Stale data — generatedAt timestamp may reflect cached generation, not live chain state"],"whenToPreferThis":"Choose this endpoint when an AI agent needs a concrete, blunt decision procedure for verifying x402 payment settlement across multiple blockchain rails — especially when retry logic and double-payment risk management are concerns. Prefer this over general blockchain explorers when you need cross-rail finality comparison (Base L2, XRPL, TRON, Solana) in a single agent-readable brief rather than raw chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:06:39.748Z","isFirstParty":false,"canonicalSlug":"settlement-finality-index-across-x402-mpp-rails-77e90037"}