{"uid":"cap_w2S2_2bgFABRQMBlmnqlA","slug":"crosschain-and-multi-rail-x402-settlement-decision-procedure-9a6019e0","name":"Crosschain and Multi-Rail x402 Settlement Decision Procedure","description":"Paid agent-facing brief on crosschain and multi-rail x402 settlement decision procedure for agents: when to use same-chain x402 vs crosschain atomic HTLC swap settlement, facilitator fallback ladders, fee thresholds per rail · Build a decision procedure or schema for: crosschain and multi-rail x402 settlement decision procedure for agents: when to use same-chain x402 vs crosschain atomic HTLC swap settlement, facilitator fa-0. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/crosschain-and-multi-rail-x402-settlement-decisi","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"crosschain and multi-rail x402 settlement decision procedure for agent paid response","$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":"crosschain-and-multi-rail-x402-settlement-decisi","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"crosschain-and-multi-rail-x402-settlement-decisi","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":"unknown","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_8j8bKrNGzFIgEQ9xHpR-U","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 an AI-generated decision procedure (plain prose brief) for agents navigating crosschain and multi-rail x402 payment settlement scenarios","exampleAgentPrompt":"Give me a decision procedure for handling crosschain and multi-rail x402 payment settlement — I need a plain-language guide my agent can follow when choosing how to settle USDC across different blockchain rails.","exampleUseCases":[{"title":"Routing crosschain x402 payments automatically","prompt":"My agent needs a step-by-step decision procedure for settling x402 payments across different blockchain rails — can you pull the crosschain and multi-rail settlement guide so it knows which rail to use and when?"},{"title":"Auditing agent payment logic for compliance","prompt":"I'm reviewing my autonomous agent's payment settlement logic and need the official decision procedure for crosschain multi-rail x402 settlement to check whether our current flow follows best practices."},{"title":"Onboarding new agent with settlement rules","prompt":"I'm spinning up a new AI agent merchant on Base and want to give it the decision procedure for crosschain and multi-rail x402 settlement so it handles payment routing correctly from the start."}],"resultDescription":"A JSON object containing a plain-prose decision procedure (120+ words) for crosschain and multi-rail x402 settlement, including the topic label, the AI model used, generation source (llm, reasoning, or deterministic), and an ISO-8601 timestamp. The 'brief' and 'procedure' fields both contain the actionable guidance text an agent can parse and act on.","failureModes":["HTTP 402 returned if USDC micropayment not yet settled — agent must pay exact $0.002 USDC and retry with PAYMENT-SIGNATURE header","Invalid or missing payment signature causes repeated 402 rejection","Network unavailability on Base may delay payment confirmation","Topic override parameter produces off-topic or low-quality generated procedure if poorly specified","Generation source may be 'deterministic' rather than 'llm' if LLM is unavailable, potentially returning a lower-quality brief"],"whenToPreferThis":"Choose this endpoint when an autonomous agent needs structured, prose-format decision guidance specifically for crosschain or multi-rail x402 payment settlement — particularly when the agent is operating on Base with USDC and needs to programmatically determine which settlement rail or method to use. Prefer it over static documentation when you want a freshly generated, model-driven procedure that can incorporate a custom topic override for your specific settlement context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:56:58.728Z","isFirstParty":false}