{"uid":"cap_2KZBwg69aU4bqYz4bys7d","slug":"transaction-lookup-d3e705b7","name":"Transaction Lookup","description":"Look up a transaction on Base by hash. POST {\"hash\":\"0x...\"} and receive its status, block number, from and to addresses, value, gas used and effective gas price. Returns a clear not-found rather than an empty object when the hash is unknown.","url":"https://x402-echo-service.onrender.com/chain/tx","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"hash":{"type":"string","description":"32-byte transaction hash."}}},"responseSchema":null,"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_ZlqFEAb5LVT5oeYA4mxDS","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":"Look up a Base blockchain transaction by hash, returning its status, block number, addresses, value, gas used, and effective gas price.","exampleAgentPrompt":"Can you look up transaction 0x4a7b3c1d... on Base and tell me its status, which block it landed in, and how much gas it used?","exampleUseCases":[{"title":"Confirm payment settled on-chain","prompt":"Check if the transaction 0xabc123...def456 on Base went through — I need to know its status and whether it was included in a block."},{"title":"Debug a failed on-chain transfer","prompt":"I just sent a transfer on Base with hash 0x9f8e7d... but I'm not sure it succeeded — can you pull up the transaction details including from/to addresses and gas used?"},{"title":"Audit gas costs for a specific transaction","prompt":"What was the effective gas price and total gas used for Base transaction 0x1a2b3c4d...? I'm trying to reconcile my gas spend."}],"resultDescription":"Returns the transaction's confirmation status, block number, originating address (from), destination address (to), ETH value transferred, gas used, and effective gas price. Returns a clear not-found message if the hash does not exist on Base rather than an empty object.","failureModes":["Unknown hash returns a clear not-found response rather than empty object","Invalid or malformed hash (not 32 bytes / not hex) may return a validation error","Transaction exists on a different network (e.g. Ethereum mainnet) will return not-found","Network or RPC timeout may result in a service error","Pending/mempool transactions may not be found if not yet included in a block"],"whenToPreferThis":"Use this endpoint when you need to retrieve on-chain transaction details from the Base network by hash — particularly when you want structured fields like status, gas, and addresses in a single call. Prefer this over a generic block explorer scrape when you need a machine-readable response. Note it is Base-specific and will not find transactions on Ethereum mainnet or other chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:41:54.353Z","isFirstParty":false}