{"uid":"cap_FsQ5Fag0cPqWctg9np3LS","slug":"blockscout-internal-transactions-api-c6ec89c1","name":"Blockscout Internal Transactions API","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/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"}}},"queryParams":{"type":"object","properties":{"index":{"type":"integer"},"items_count":{"type":"integer"},"block_number":{"type":"integer"},"transaction_hash":{"type":"string"},"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_fbbMcftcT-7oOmi6lswf2","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 internal transactions (traces) for a specific transaction on a given blockchain network via Blockscout's multichain explorer","exampleAgentPrompt":"Can you pull the internal transactions for transaction hash 0xabc123... on Ethereum (chain ID 1) using Blockscout, and show me all the internal calls including zero-value transfers?","exampleUseCases":[{"title":"Debug failed smart contract call","prompt":"This transaction 0xdeadbeef... on Ethereum failed — can you use Blockscout to fetch its internal transactions so I can see which internal call errored out?"},{"title":"Trace DeFi swap execution path","prompt":"I want to understand exactly what happened under the hood during this Uniswap swap on Base (chain ID 8453) — can you pull all the internal transactions for tx hash 0x987fed... using Blockscout?"},{"title":"Audit internal ETH transfers in a block","prompt":"For block number 19500000 on Ethereum, can you retrieve all internal transactions using Blockscout so I can audit which addresses received internal ETH transfers?"}],"resultDescription":"Returns a paginated list of internal transactions, each including from/to address details (with ENS names, tags, scam flags, contract status), transfer value, gas limit, success/error status, timestamp, block number, transaction hash, and any created contract info. Also returns next_page_params for cursor-based pagination.","failureModes":["Invalid or unsupported chain_id returns an error or empty result","Non-existent transaction_hash returns empty items array","Malformed query parameters return a 400-level error","Chain not indexed by Blockscout returns no data","Rate limiting or payment failure returns 402 or 429 error","Very recent transactions may not yet be indexed, returning empty results"],"whenToPreferThis":"Choose this endpoint when you need internal transaction traces (sub-calls, internal ETH transfers, contract creations) for a specific transaction or block on EVM-compatible chains supported by Blockscout. It is ideal for debugging smart contract interactions, auditing DeFi flows, or tracing execution paths across multiple internal calls. Prefer it over Etherscan-style APIs when working with non-mainnet EVM chains (Base, Optimism, Gnosis, etc.) that Blockscout indexes natively.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-10T00:51:10.418Z","isFirstParty":false}