{"uid":"cap_nHrnfW8vTVoLKmDMx1F8B","slug":"x402-settlement-network-check-9b0b1ee3","name":"X402 Settlement Network Check","description":"X402 Settlement Network Check: compares settlement chain with the accepted challenge network using only bounded caller-supplied values. Call when you need a bounded x402 settlement network check result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Settlement Network Check as versioned determinist…","url":"https://api.delx.ai/api/v1/x402/x402-settlement-network-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"accepted_network":{"type":"string","maxLength":8192,"description":"Accepted Network supplied to X402 Settlement Network Check; used only for this bounded calculation and processed in memory without retention."},"settlement_network":{"type":"string","maxLength":8192,"description":"Settlement Network supplied to X402 Settlement Network Check; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"actual":"eip155:8453","matched":true,"expected":"eip155:8453"},"schema":"delx/util-x402-settlement-network-check/v1","status":"pass","evidence":{"retained":false,"input_sha256":"3f67bde369ab9e2fa887e91c329b545b0ab55c7e5f31ec07cec47e8c94798178","external_calls":0},"operation":"delivery_contract:x402_settlement_network_check"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SadxiNm35cezgslCSWRng","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates that a payment's settlement chain matches the accepted challenge network, returning a pass/fail verdict with mismatch reasons for x402 payments.","exampleAgentPrompt":"Before we accept this x402 payment, check whether the settlement network 'base-mainnet' matches the accepted challenge network 'base-mainnet' — give me the verdict and any mismatch reasons.","exampleUseCases":[{"title":"Pre-payment network compatibility check","prompt":"I'm about to pay for an x402 service — the challenge says accepted_network is 'base-mainnet' but the settlement_network in the result is 'ethereum-mainnet'. Can you verify if these match and tell me if it's safe to proceed?"},{"title":"Agent delivery validation before acceptance","prompt":"Before my agent accepts this assembled delivery, check that the settlement network 'base-sepolia' lines up with the accepted challenge network 'base-sepolia' and return any mismatch reasons if something's off."},{"title":"Automated x402 fraud guard in payment pipeline","prompt":"Run a settlement network check on this x402 payment — accepted_network is 'optimism-mainnet' and settlement_network is 'base-mainnet' — and tell me whether to accept or reject it with the specific reasons."}],"resultDescription":"Returns an explicit accept or reject status, contract-specific validation checks, normalized evidence from the input networks, and a list of mismatch reasons explaining why the networks do or do not align.","failureModes":["Missing or empty accepted_network or settlement_network fields returns a validation error","Inputs exceeding 8192 characters are rejected","Ambiguous or unrecognized network identifiers may result in inconclusive checks","Network string formatting inconsistencies may cause false mismatches"],"whenToPreferThis":"Use this endpoint when operating within an x402 payment or agent delivery flow and you need a lightweight, no-external-provider check to confirm that the settlement chain in a result matches the network declared in the accepted challenge. Prefer this over manual string comparison when you need normalized evidence and structured mismatch reasons rather than a raw boolean.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T07:14:54.851Z","isFirstParty":false,"canonicalSlug":"x402-settlement-network-check-9b0b1ee3"}