{"uid":"cap_qKgcB2WFe4VOD6-Ux2XBN","slug":"x402-fuchss-app-x402-payment-trace-37edc2f0","name":"x402.fuchss.app — x402 Payment Trace","description":"Know before you pay: deterministic trust scores (0-100) for 100,000+ x402 endpoints, backed by continuous probes and on-chain settlement data.","url":"https://x402.fuchss.app/v1/x402-payment-trace","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"txHash":{"type":"string"},"network":{"type":"string"}}},"responseSchema":{"type":"json","example":{"model":"llama-3.3-70b","route":{"knownTo":["cdp"],"reseller":"x402.fuchss.app","x402Resource":"https://x402.fuchss.app/v1/x402-trust","ourLedgerMatch":true},"trace":{"txHash":"0x384c5adf64e87fadc0b176005c49051cdc192d5c28b0158c05c3e9251a01d556","gasUsed":"85000","blockNumber":12345678},"txHash":"0x384c5adf64e87fadc0b176005c49051cdc192d5c28b0158c05c3e9251a01d556","network":"base-mainnet","payment":{"payee":"0xbBECBE90F28632a9d52ed67b33b43767b8c89285","payer":"0x1e82de8B9d2b12b86b2E11EAC29A36140543C451","token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","settled":true,"amountUsd":"0.005","selectorUsed":"transferWithAuthorization"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.011673","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.011673/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.011673","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.011673","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XNT49wiu4BQttAIassAuh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.011673","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Traces and decodes an on-chain USDC payment transaction to verify it was a valid x402 protocol settlement, returning compliance and settlement details.","exampleAgentPrompt":"Can you trace this x402 payment transaction for me — the hash is 0xabc123...def456 on base-mainnet — and confirm it was a valid settlement for https://api.example.com/my-resource?","exampleUseCases":null,"resultDescription":"Returns a structured object with on-chain payment trace data including x402 envelope compliance status, verified settlement amount in USDC, matched resource URL, network details, and any detected anomalies or protocol violations for the given transaction.","failureModes":["Invalid or malformed txHash returns a 4xx error","Transaction not found on specified network returns not-found error","Transaction exists but is not an x402 payment returns non-compliant result","Network slug mismatch causes lookup on wrong chain","Service itself costs $0.017624 USDC per call via x402 — missing payment returns 402","hintResource URL mismatch flagged in response but not a hard failure"],"whenToPreferThis":"Use this endpoint when you need to verify or audit a specific on-chain USDC transaction to confirm it was a legitimate x402 protocol payment — for example, to reconcile payments, investigate disputes, or validate that a particular tx hash corresponds to a specific API resource. Prefer this over generic blockchain explorers when you need x402-specific compliance and envelope validation rather than raw transaction data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:35:13.682Z","isFirstParty":false}