{"uid":"cap_TMb2KNr9h_3HGCdQUtY6j","slug":"onchaininja-whale-tracker-per-chain-movement-feed-bd5ff042","name":"OnChaiNinja Whale Tracker — Per-Chain Movement Feed","description":"Alpha signals, whale tracking, rug scanning, and MEV protection across Base, Solana, Arbitrum, and more.","url":"https://onchaininja.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_Ar1q72diKfHDpY6jNnyAJ","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 network","exampleAgentPrompt":"Show me whale wallet movements on Base right now — I want to see any large on-chain transfers happening today.","exampleUseCases":null,"resultDescription":"A JSON object containing the queried chain name and an array of whale movements, each entry likely including wallet addresses, transaction amounts, and timestamps of large on-chain transfers on that network.","failureModes":["Unsupported chain identifier returns empty movements array or error","Network congestion may cause stale or delayed movement data","Empty movements array if no significant whale activity in recent window","Payment of 2 USDC not fulfilled returns 402 Payment Required","Malformed chain parameter returns schema error or empty response"],"whenToPreferThis":"Use this endpoint when you need real-time or near-real-time whale wallet movement data for a specific chain (Base, Solana, Arbitrum, etc.) and want to identify large on-chain transfers without building your own indexer. Prefer this over generic block explorers when you need pre-filtered whale-level activity in a structured format ready for agent consumption.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:36:31.257Z","isFirstParty":false}