{"uid":"cap_FmTmEFHRZwIAUfo54otJ0","slug":"onchaininja-whale-tracker-multi-chain-69a7f823","name":"OnChaiNinja Whale Tracker — Multi-Chain","description":"Alpha signals, whale tracking, rug scanning, and MEV protection across Base, Solana, Arbitrum, and more.","url":"https://x402ninja.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":"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":"$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_8GFaIPG19YJAs0SlqC82I","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 on-chain transfers for a specified blockchain (Base, Solana, Arbitrum, etc.)","exampleAgentPrompt":"Show me the latest whale movements on Base — I want to see any large wallet transfers happening right now on that chain.","exampleUseCases":null,"resultDescription":"A JSON object containing the queried chain name and a list of whale movements, including large on-chain transfers and wallet activity detected on that blockchain.","failureModes":["Unsupported chain identifier returns empty movements array or error","Payment not completed results in 402 response blocking data access","Chain parameter missing or malformed returns invalid request error","No recent whale activity may return an empty movements array"],"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), especially when tracking large on-chain transfers as alpha signals for trading or monitoring purposes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T00:30:01.738Z","isFirstParty":false}