{"uid":"cap_TSjicF5vquPt9DJCVYuCO","slug":"mach-gallery-base-transaction-lookup-082f5702","name":"Mach Gallery Base Transaction Lookup","description":"Fast, low-cost Base data for autonomous agents. No API keys, no subscriptions; pay per call with USDC over x402.","url":"https://api.mach.gallery/api/base/transaction?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tx_hash":{"type":"string","pattern":"^0x[0-9a-fA-F]{64}$","description":"32-byte Base transaction hash."}}},"responseSchema":{"type":"json","example":{"found":true,"network":"eip155:8453","transaction":{"to":"0x...","from":"0x...","hash":"0x...","value":"0x0"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kPyDJKzq_b0tbG-2-dsGy","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches full transaction details for a given transaction hash on the Base blockchain (EIP-155 chain 8453), paid per-call with USDC via x402.","exampleAgentPrompt":"Can you look up the Base blockchain transaction 0x3a1b2c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b and tell me who sent it, who received it, and how much was transferred?","exampleUseCases":[{"title":"Verify a payment was received on-chain","prompt":"I need to confirm that the Base transaction 0xabc123...def456 actually went through — can you pull up the details and tell me who sent it, who received it, and what value was transferred?"},{"title":"Audit an agent's on-chain spending","prompt":"My autonomous agent just submitted a transaction on Base with hash 0x9f8e7d6c5b4a3f2e1d0c9b8a7f6e5d4c3b2a1f0e9d8c7b6a5f4e3d2c1b0a9f8e — look it up and tell me the from address, to address, and value so I can check it matches what was intended."},{"title":"Enrich transaction history records","prompt":"For this Base tx hash 0x1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b, can you fetch the raw transaction data including sender, recipient, and ETH value so I can add it to my transaction log?"}],"resultDescription":"Returns a JSON object with a 'found' boolean, the network identifier ('eip155:8453' for Base), and a 'transaction' object containing the 'from' address, 'to' address, 'hash', and 'value' (as a hex string) for the requested transaction. If the transaction is not found, 'found' will be false.","failureModes":["Transaction hash not found on Base — returns found:false","Malformed tx_hash (not matching ^0x[0-9a-fA-F]{64}$) — likely 400 validation error","Payment failure or insufficient USDC balance via x402 — 402 Payment Required","Network timeout or RPC unavailability — 5xx server error","Hash exists on a different chain (e.g. Ethereum mainnet) but not Base — returns found:false"],"whenToPreferThis":"Choose this endpoint when you need lightweight, pay-per-call Base blockchain transaction lookups without managing API keys or subscriptions. It is ideal for agents that occasionally need on-chain transaction data on Base (EIP-155:8453) and want to pay micro-amounts in USDC via the x402 protocol rather than committing to a subscription service like Alchemy or Infura. Not suited for high-volume bulk queries or for chains other than Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:37:24.943Z","isFirstParty":false,"canonicalSlug":"mach-gallery-base-transaction-lookup-082f5702"}