{"uid":"cap_8S69ZBPg052U5VzsNFkht","slug":"signalharness-evm-transaction-inspector-6ccbd096","name":"SignalHarness EVM Transaction Inspector","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/evm_transaction_inspect/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"evm_transaction_request":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Supplied transaction fields are not independently verified on-chain."],"service_id":"evm_transaction_inspect","evidence_scope":"caller_supplied_data","transaction_inspection":"{\"from\":\"0x0000000000000000000000000000000000000001\",\"gas_limit\":\"21000\",\"hash\":\"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\"input_bytes\":0,\"nonce\":\"1\",\"supplied_fields\":[\"from\",\"gas\",\"hash\",\"input\",\"nonce\",\"to\",\"value\"],\"to\":\"0x0000000000000000000000000000000000000002\",\"type\":null,\"value_atomic\":\"10\"}"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"evm_transaction_inspect","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"9589bdd9a678a1ba003f45ee3be6d05229d07a03a8a71c10f89825700247c8b1","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_DkvwrTxqNJJxrFReXS0Fk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Inspects and analyzes an EVM transaction request, returning warnings, risk signals, and a detailed transaction inspection report.","exampleAgentPrompt":"Before I approve this transaction, can you inspect this EVM transaction request and tell me if there are any warnings or red flags I should know about? Here's the raw transaction data: 0x...","exampleUseCases":[{"title":"Pre-signing transaction safety check","prompt":"I'm about to sign this EVM transaction from a DApp — can you inspect it and tell me if there's anything suspicious or risky before I approve it? Here's the transaction payload: 0x095ea7b3000000000000000000000000..."},{"title":"Smart contract interaction audit","prompt":"My wallet is asking me to approve a smart contract call on Base. Can you analyze this transaction request and explain what it does and whether there are any warnings I should be aware of?"},{"title":"Phishing transaction detection","prompt":"Someone sent me a transaction request and it looks off. Can you run it through your EVM transaction inspector and tell me if this looks like a phishing or drainer attack? Transaction data: 0xa9059cbb..."}],"resultDescription":"Returns a JSON object containing a 'transaction_inspection' narrative, a list of 'warnings', an 'evidence_scope' field (e.g. caller_supplied_data), a 'replay' boolean indicating replay risk, and a full receipt with payment and execution metadata including latency, service version, and result hash.","failureModes":["Invalid or malformed EVM transaction string returns an error","Transaction data too short (below minLength of 2) or too long (above 65536 chars) fails validation","Payment not received or insufficient USDC results in 402 rejection","Ambiguous or non-EVM formatted input may return generic or low-confidence inspection results","Network or service timeout may cause execution failure with no result"],"whenToPreferThis":"Choose this endpoint when you need a fast, per-transaction AI-powered inspection of raw EVM transaction data before signing or broadcasting — especially useful in agentic wallets, DApp browsers, or security bots that need to flag risky approvals, drainer calls, or suspicious calldata on EVM-compatible chains like Base or Ethereum. Prefer this over general blockchain explorers when you want structured warnings and a natural-language inspection rather than raw on-chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:54:55.268Z","isFirstParty":false}