{"uid":"cap_47popTOCeEwwM8adtKGff","slug":"signalharness-abi-event-decoder-2b0e78ed","name":"SignalHarness ABI Event Decoder","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/abi_event_decode/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"abi_event_decode_request":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Decoded logs are not independently verified receipts."],"service_id":"abi_event_decode","decoded_event":"{\"args\":{\"account\":\"0x0000000000000000000000000000000000000001\",\"value\":\"5\"},\"eventName\":\"Changed\"}","evidence_scope":"caller_supplied_data"},"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":"abi_event_decode","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"71cc9e37ca3a7b3db01eef23c28b210412f3c573ffcd524467a49e448bb59dbe","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_ux9m6gfzNMcw5xwExnPyL","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":"Decodes Ethereum ABI-encoded smart contract events from raw log data into human-readable form","exampleAgentPrompt":"Decode this raw Ethereum ABI-encoded event log for me — I pulled it from a transaction receipt on Base and need to know what the event fields and values actually are: 0x000000000000000000000000...","exampleUseCases":[{"title":"Decode DeFi swap event from transaction","prompt":"I have a raw ABI-encoded event log from a Uniswap swap transaction on Base — can you decode it and tell me what the token amounts and addresses are?"},{"title":"Debug smart contract event in agent workflow","prompt":"My agent received this encoded event log from a smart contract call and I can't tell what happened — decode it so I can see the field names and values."},{"title":"Parse NFT transfer log for wallet tracker","prompt":"I'm building a wallet tracker and got this raw EVM log from an NFT transfer event — decode the ABI encoding so I know which token ID moved between which addresses."}],"resultDescription":"Returns a decoded event object with human-readable field names and values extracted from the ABI-encoded input, along with any warnings about the data, an evidence scope tag indicating the data came from caller-supplied input, and a full receipt including payment ID, network, latency, execution ID, and a SHA-256 result hash for verification.","failureModes":["Malformed or truncated ABI-encoded input returns a decode error","Missing or invalid ABI definition causes field mapping failure","Input string below minimum length (2 chars) is rejected with validation error","Non-ABI-encoded data submitted will produce garbled or warning-laden output","Network or service unavailability returns a non-succeeded status"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call ABI event decoding service with cryptographic receipt proof (SHA-256 result hash) and structured output, especially within agent workflows on Base network that already use x402 micropayment infrastructure. It is well suited for one-off event decoding without managing your own ABI parsing infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:39:43.645Z","isFirstParty":false}