{"uid":"cap_4ogafsG_qhb77LI0STPTh","slug":"blockscout-internal-transactions-lookup-126974a9","name":"Blockscout Internal Transactions Lookup","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/internal-transactions","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"},"transaction_index":{"type":"integer"},"include_zero_value":{"type":"boolean"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"meta":{"status":0,"message":"string"},"items":[{"to":{},"from":{"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"}]},"type":"string","error":"string","index":0,"value":"string","success":true,"gas_limit":"string","timestamp":"string","block_number":0,"created_contract":{},"transaction_hash":"string","transaction_index":0}],"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_NMefMyyjUS3X7rgl-WOV8","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 all internal transactions (call traces) for a specific transaction hash on a given blockchain network via Blockscout's multichain explorer API","exampleAgentPrompt":"Can you pull up all the internal transactions for Ethereum tx hash 0xabc123... on chain ID 1 using Blockscout, and show me which internal calls succeeded and what value was transferred in each?","exampleUseCases":[{"title":"DeFi swap internal call trace","prompt":"I just sent a Uniswap transaction on Ethereum — tx hash is 0xd3f12...abc — can you show me all the internal calls and value transfers that happened inside it using Blockscout?"},{"title":"Failed transaction debug","prompt":"My transaction 0x9fa34...bee on chain 137 (Polygon) failed. Can you fetch its internal transactions from Blockscout so I can see which internal call threw an error?"},{"title":"Smart contract creation audit","prompt":"For transaction hash 0x77c01...d12 on Base (chain ID 8453), can you list all internal transactions and tell me if any new contracts were created as part of it?"}],"resultDescription":"Returns a paginated list of internal transactions for the given tx hash, each containing: from/to addresses (with metadata like ENS name, scam flags, public tags, contract status), transfer value, call type, gas limit, success/error status, timestamp, block number, and any created contract address. Includes next_page_params for pagination.","failureModes":["Invalid or malformed transaction hash returns error or empty result","Unsupported chain_id returns 404 or empty response","Transaction with no internal calls returns empty items array","Rate limiting or payment failure returns 402 or 429","Network unavailability causes timeout or 503"],"whenToPreferThis":"Use this endpoint when you need to deeply inspect the internal call tree of a specific transaction — especially for debugging failed transactions, auditing DeFi interactions, tracing value flows inside smart contract executions, or detecting contract creations triggered mid-transaction. Prefer this over top-level transaction APIs when you need sub-call granularity across any of the supported Blockscout chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:46:39.106Z","isFirstParty":false}