{"uid":"cap_HTxffMXGwN02lKr76S-fk","slug":"basebuilder-crypto-contract-events-64a01e77","name":"BaseBuilder Crypto Contract Events","description":"BaseBuilder Crypto API hub - 26 paid endpoints","url":"https://bb-crypto.vercel.app/api/contract-events","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.086579","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":"$0.086579/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.086579","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.086579","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_O9TI9kvC2InA1QW0OOty7","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.086579","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches on-chain contract events for a given smart contract address on Base or compatible EVM networks","exampleAgentPrompt":"Can you pull all Transfer events from the contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base mainnet starting from block 12000000 up to the latest block?","exampleUseCases":null,"resultDescription":"Returns a list of decoded on-chain events emitted by the specified smart contract, including event names, transaction hashes, block numbers, and decoded parameter values for each log entry.","failureModes":["Invalid or non-existent contract address returns empty results or error","Block range too large may result in timeout or truncated results","Unsupported network/chain ID returns an error","Malformed request body returns 400 bad request","Payment not received or insufficient USDC returns 402 Payment Required","Rate limiting may return 429 if too many requests are made"],"whenToPreferThis":"Use this endpoint when you need to retrieve historical or recent on-chain event logs from a specific smart contract deployed on Base or an EVM-compatible chain, especially when you want decoded event data without running your own node or indexer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:44:34.928Z","isFirstParty":false}