{"uid":"cap_ilubx20Hg6A7BNTT19rUC","slug":"base-usdc-whale-transfer-tracker-4b147253","name":"Base USDC Whale Transfer Tracker","description":"Large USDC transfers on Base over the most recent blocks (default ~300), from confirmed Transfer logs: amount, sender, receiver, tx hash, block.","url":"https://auditor-x402.onrender.com/api/whale-wallet-tracker?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"windowBlocks":{"type":"number","description":"Blocks to scan, 25-600 (default 300, ~2s per block)"},"minUsdcAmount":{"type":"number","description":"Minimum transfer size in USDC (min 1000, default 100000)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_AgPsYXalguVhY6Ak9elAg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scans recent Base blockchain blocks for large USDC transfers, returning confirmed Transfer logs with amount, sender, receiver, transaction hash, and block number.","exampleAgentPrompt":"Scan the last 400 blocks on Base and show me any USDC transfers over 500,000 USDC — I want to see the sender, receiver, amount, and transaction hash for each whale movement.","exampleUseCases":[{"title":"Whale wallet movement detection","prompt":"Check the last 300 blocks on Base and find any USDC transfers above 250,000 USDC — I want to know who is moving large amounts and where it's going."},{"title":"DeFi liquidity monitoring alert","prompt":"Scan the past 600 blocks on Base for USDC transfers over 1,000,000 USDC so I can spot any major liquidity events or large protocol deposits happening right now."},{"title":"On-chain trading signal research","prompt":"Look at the last 150 blocks on Base and pull all USDC transfers above 50,000 USDC — I'm trying to identify smart money addresses that are actively moving funds."}],"resultDescription":"A list of confirmed USDC Transfer log entries from Base mainnet, each containing the transfer amount in USDC, sender wallet address, receiver wallet address, transaction hash, and block number, filtered to only include transfers meeting the specified minimum amount threshold within the scanned block window.","failureModes":["windowBlocks out of range (must be 25-600): returns validation error","minUsdcAmount below minimum (must be >= 1000): returns validation error","RPC node unavailable or Base network congestion causing scan timeout","No transfers found matching criteria in the given block window: returns empty result set","Payment failure (insufficient USDC balance for x402 payment)"],"whenToPreferThis":"Choose this endpoint when you need real-time on-chain data about large USDC transfers specifically on Base mainnet, with control over block window size and minimum transfer threshold. Prefer this over generic blockchain explorers when you need structured, machine-readable output for downstream agent processing, or when you need to programmatically detect whale activity without scraping block explorers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:33:37.554Z","isFirstParty":false,"canonicalSlug":"base-usdc-whale-transfer-tracker-4b147253"}