{"uid":"cap_kZtBKDAu_HSViwBfaXDio","slug":"speraxos-internal-transactions-lookup-916a6d84","name":"SperaxOS Internal Transactions Lookup","description":"AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.","url":"https://chat.sperax.io/api/x402/tools/internal-txs/getInternalTxs?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"type":"string","default":"ethereum","description":"Chain: ethereum, arbitrum, polygon, optimism, base"},"limit":{"type":"number","default":20,"description":"Max results (default 20)"},"address":{"type":"string","description":"Wallet or contract address"},"endBlock":{"type":"number","description":"End block number"},"startBlock":{"type":"number","default":0,"description":"Start block number"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mFQux3YX5P9IxPNziykIu","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0xD74f5255D557944cf7Dd0E45FF521520002D5748","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves internal (trace-level) transactions for a given wallet or contract address on EVM-compatible chains","exampleAgentPrompt":"Show me the last 50 internal transactions for wallet address 0xAbC...123 on Arbitrum, starting from block 18000000.","exampleUseCases":[{"title":"DeFi contract call audit","prompt":"Pull up all internal transactions for the Uniswap V3 contract 0x1F98431c8aD98523631AE4a59f267346ea31F984 on Ethereum, up to 30 results, so I can audit which contracts it called internally."},{"title":"Wallet internal transfer history","prompt":"Show me the internal transactions for my wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base between block 5000000 and 6000000, limit 20."},{"title":"Cross-chain internal tx comparison","prompt":"Get the last 20 internal transactions for address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Polygon so I can see what smart contract calls happened under the hood."}],"resultDescription":"A list of internal transactions (traces) for the specified address on the chosen EVM chain, including details such as calling contract addresses, value transferred, block numbers, and call type — up to the specified limit and bounded by the optional start/end block range.","failureModes":["Invalid or malformed wallet/contract address returns an error","Unsupported chain name returns a validation error","Start block greater than end block returns empty results or an error","No internal transactions found in the given block range returns an empty list","Rate limiting or payment failure via x402 protocol results in a 402 Payment Required response","Extremely wide block ranges with high activity may time out or be truncated"],"whenToPreferThis":"Use this endpoint when you need to inspect internal (trace-level) transaction activity — i.e. contract-to-contract calls and ETH transfers that don't appear as top-level transactions — for a specific address across major EVM chains including Ethereum, Arbitrum, Polygon, Optimism, and Base. Prefer this over external transaction endpoints when you need to understand what happened beneath the surface of a transaction, such as internal calls made by DeFi protocols or value flows within a smart contract. It's pay-per-request with no API key required, making it ideal for agents needing on-demand blockchain tracing without upfront credential setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:41:54.205Z","isFirstParty":false,"canonicalSlug":"speraxos-internal-transactions-lookup-916a6d84"}