{"uid":"cap_YuH2FVme7LeK8k8W4rAvw","slug":"evm-transaction-lookup-by-hash-438d85f5","name":"EVM Transaction Lookup by Hash","description":"60 paid endpoints with no metering, no API key and no account. Each endpoint has one flat price per call, whatever the size of the request: LLM completions with automatic failover across several large models, read-only EVM tooling over Base, Ethereum, Polygon, Arbitrum and Optimism, and pure crypto utilities that touch no network.","url":"https://flat-rate-llm.kikoribera03.workers.dev/v1/evm/tx","method":"POST","headers":{},"bodySchema":{"type":"object","required":["hash"],"properties":{"hash":{"type":"string","description":"Transaction hash."},"chain":{"type":"string","description":"base | ethereum | polygon | arbitrum | optimism."}}},"responseSchema":{"type":"object","properties":{"to":{"type":"string"},"from":{"type":"string"},"status":{"type":"string"},"gasUsed":{"type":"number"},"blockNumber":{"type":"number"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_p3CDST07BylKOwuXXpPo6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches merged transaction details and receipt (from, to, value, gas used, status, block) for a given transaction hash on EVM-compatible chains in a single call.","exampleAgentPrompt":"Can you look up the Ethereum transaction 0xabc123...def456 and tell me whether it succeeded, how much gas it used, and which block it landed in?","exampleUseCases":[{"title":"Verify payment confirmation on-chain","prompt":"I just sent a payment on Base — the tx hash is 0x4f2a9...b81c. Can you check whether it went through and who received it?"},{"title":"Debug a failed smart contract call","prompt":"My Polygon transaction 0x9d3f1...a22e failed — can you pull the full details including gas used and status so I can figure out what went wrong?"},{"title":"Audit transaction sender on Arbitrum","prompt":"Can you look up Arbitrum transaction 0x7c8b2...d91f and confirm the from and to addresses and what block it was included in?"}],"resultDescription":"A JSON object containing the destination address (to), sender address (from), transaction status (success or failure), gas used as a number, and block number where the transaction was confirmed.","failureModes":["Transaction hash not found on the specified chain — returns empty or error response","Wrong chain specified — transaction exists on a different network and will not be found","Malformed transaction hash — invalid hex string causes a 400 or validation error","Chain not supported — only base, ethereum, polygon, arbitrum, optimism are valid chain values","Transaction pending — not yet mined, so receipt fields may be null or absent"],"whenToPreferThis":"Use this endpoint when you need both transaction details and receipt data in a single call without managing two separate RPC requests. Ideal for agents that need to verify transaction finality, check success/failure status, or audit sender/receiver without running their own Ethereum node or managing API keys. Preferred over raw RPC when working across multiple EVM chains (Base, Ethereum, Polygon, Arbitrum, Optimism) from a single interface.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:53:15.264Z","isFirstParty":false}