{"uid":"cap_dxjBElSGbhr_YuZrVwb8e","slug":"x402-web-probe-blockchain-transaction-lookup-us-central-8d96bd32","name":"x402 Web Probe – Blockchain Transaction Lookup (US Central)","description":"Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from US Central (St. Louis). USDC on Base via x402. No account or API key.","url":"https://rockndefi.xyz:8443/v1/chain/tx?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"],"type":"string"},"queryParams":{"type":"object","required":["chain","hash"],"properties":{"hash":{"type":"string","example":"0x142d15b73dfbf96c4a75a62079e8a1f4999916229734e0c28feafc752323e599","description":"0x transaction hash"},"chain":{"type":"string","example":"base","description":"base or ethereum"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"to":"0x...","from":"0x...","block":36000000,"status":"success","gas_used":"52000","value_eth":"0","confirmations":12}},"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_f5bxl0B_RiPppNuNOCcja","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":"Fetches on-chain transaction details (status, gas, value, confirmations) for a given transaction hash on Base or Ethereum, paid per-call via x402/USDC.","exampleAgentPrompt":"Can you look up the transaction 0x142d15b73dfbf96c4a75a62079e8a1f4999916229734e0c28feafc752323e599 on Base and tell me if it succeeded, how many confirmations it has, and how much gas was used?","exampleUseCases":[{"title":"Verify DeFi payment confirmation","prompt":"I just sent a USDC payment on Base with hash 0x142d15b73dfbf96c4a75a62079e8a1f4999916229734e0c28feafc752323e599 — can you check if it's confirmed and how many confirmations it has so far?"},{"title":"Audit gas costs for a transaction","prompt":"Look up transaction 0xabc123...def456 on Ethereum and tell me how much gas was used and what the final status was — I need to reconcile the cost."},{"title":"Identify sender and receiver of a tx","prompt":"For transaction hash 0x9f8e7d6c5b4a3210 on Base, who sent it and who received it, and what block was it included in?"}],"resultDescription":"Returns a JSON object with: 'to' and 'from' wallet addresses, 'block' number, 'status' (success/failure), 'gas_used', 'value_eth' (amount transferred), and 'confirmations' count. No account required; payment is $0.002 USDC on Base via x402.","failureModes":["Invalid or malformed transaction hash returns an error","Unsupported chain value (not 'base' or 'ethereum') causes rejection","Transaction not yet indexed returns empty or pending state","Network connectivity issues from US Central node may cause timeouts","x402 payment failure results in HTTP 402 and no data returned"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, no-account, pay-per-call transaction lookup on Base or Ethereum without setting up an API key with Etherscan, Alchemy, or Infura. Ideal for agents that need occasional, ad-hoc on-chain verification rather than bulk indexing. The x402 micropayment model makes it frictionless for low-frequency use.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:40:26.083Z","isFirstParty":false,"canonicalSlug":"x402-web-probe-blockchain-transaction-lookup-us-central-8d96bd32"}