{"uid":"cap_SbKqT5krJ9p-XrQoG5Ov0","slug":"onchaininja-whale-tracker-multi-chain-946f0f17","name":"OnChaiNinja Whale Tracker — Multi-Chain","description":"Alpha signals, whale tracking, rug scanning, and MEV protection across Base, Solana, Arbitrum, and more.","url":"https://nininonchain.vercel.app/api/whale/%7Bchain%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"chain":"base","movements":[]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"2","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$2/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"2","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"2","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-srRFndWIMddsx12NzMSt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"2","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns whale wallet movement data and large transaction signals for a specified blockchain network","exampleAgentPrompt":"Show me the latest whale movements on Base — I want to see which big wallets are making large transactions right now.","exampleUseCases":[{"title":"Spot whale accumulation on Solana","prompt":"Pull up the whale activity on Solana and tell me if any large wallets are accumulating — I want to know if smart money is moving in."},{"title":"Pre-trade whale check on Arbitrum","prompt":"Before I make a trade, can you check what the whales are doing on Arbitrum? I need to see if there are any big moves happening right now."},{"title":"Monitor Base whale flows for alpha","prompt":"Keep an eye on whale movements on Base and let me know if you see any unusual large transactions that could signal an upcoming price move."}],"resultDescription":"Returns a JSON object containing the queried chain identifier and an array of whale movements, each representing a large on-chain transaction or wallet activity signal detected on that network.","failureModes":["Unsupported chain name returns empty movements array or error","Chain with no recent whale activity returns movements as empty array","Malformed chain parameter may result in 400 error or null response","Network latency from the underlying Vercel deployment may cause timeouts","Payment failure ($2 USDC) blocks the request before processing"],"whenToPreferThis":"Use this endpoint when you need real-time whale wallet movement data for a specific blockchain (Base, Solana, Arbitrum, or others supported by OnChaiNinja) and want actionable on-chain alpha signals. Prefer this over generic block explorers when you specifically need aggregated large-transaction signals rather than raw transaction data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-12T06:30:24.994Z","isFirstParty":false}