{"uid":"cap_I9vJqwyxHBmhclOFXx4GF","slug":"blockscout-transaction-logs-by-chain-ed39d830","name":"Blockscout Transaction Logs by Chain","description":"Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data","url":"https://api.blockscout.com/%7Bchain_id%7D/api/v2/transactions/%7Btransaction_hash_param%7D/logs","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","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","properties":{"chain_id":{"type":"string"},"transaction_hash_param":{"type":"string"}}},"queryParams":{"type":"object","properties":{"index":{"type":"integer"},"items_count":{"type":"integer"},"block_number":{"type":"integer"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"items":[{"data":"string","index":0,"topics":["string"],"address":{"hash":"string","name":"string","is_scam":true,"metadata":{},"proxy_type":"string","reputation":"string","is_contract":true,"is_verified":true,"public_tags":[{"label":"string","address_hash":"string","display_name":"string"}],"private_tags":[{"label":"string","address_hash":"string","display_name":"string"}],"ens_domain_name":"string","implementations":[{"name":"string","address_hash":"string"}],"watchlist_names":[{"label":"string","display_name":"string"}]},"decoded":{},"block_hash":"string","block_number":0,"smart_contract":{},"block_timestamp":"string","transaction_hash":"string"}],"next_page_params":{}}},"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_bvaFjCS3-3-TOmszEviFv","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":"Retrieves paginated event logs emitted by a specific transaction on a given blockchain network via Blockscout's multichain explorer API","exampleAgentPrompt":"Can you pull all the event logs for transaction 0xabc123...def on Ethereum (chain ID 1) from Blockscout so I can see which smart contract events were emitted?","exampleUseCases":[{"title":"Debug DeFi swap transaction events","prompt":"I just executed a Uniswap swap on Ethereum and the transaction hash is 0x7f3d...a1b2 — can you fetch all the event logs for it on chain 1 from Blockscout so I can see what Transfer and Swap events were fired?"},{"title":"Monitor NFT mint contract logs","prompt":"Can you get the transaction logs for tx hash 0x9c45...e3f1 on Polygon (chain ID 137) from Blockscout? I want to see the decoded events to confirm the NFT mint succeeded."},{"title":"Audit bridge transaction on L2","prompt":"Fetch the event logs from Blockscout for transaction 0x2b87...c9d4 on Optimism (chain ID 10) — I need to check the topics and decoded data to audit whether the bridge transfer completed correctly."}],"resultDescription":"A paginated list of log objects, each containing raw hex data, indexed topics array, the emitting contract address (with name, verification status, proxy type, tags, and ENS name), a decoded log payload, block hash, block number, block timestamp, and transaction hash. Also includes next_page_params for cursor-based pagination through large log sets.","failureModes":["Invalid or unknown transaction hash returns empty items array or 404","Unsupported chain_id results in routing error or empty response","Malformed transaction hash format causes a 400 validation error","Pagination params (index, block_number, items_count) out of range may return empty next page","Network congestion or node sync lag may return stale or incomplete log data"],"whenToPreferThis":"Choose this endpoint when you need event log data for a specific transaction across any EVM-compatible blockchain supported by Blockscout, especially when you need decoded log data, contract metadata (name, verification, tags), or ENS resolution alongside raw topics. Prefer this over generic RPC eth_getTransactionReceipt calls when human-readable decoded event names and contract reputation signals are needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-12T12:43:45.689Z","isFirstParty":false}