{"uid":"cap_KtO1i22HUl9SxBKfPv29u","slug":"speraxos-whale-alerts-api-0c0e793b","name":"SperaxOS Whale Alerts API","description":"AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.","url":"https://chat.sperax.io/api/x402/intel/whale-alerts?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4mJMVjQhTpP6a7rI1AAqG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0xD74f5255D557944cf7Dd0E45FF521520002D5748","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns AI-powered DeFi whale alert data — large on-chain transactions and wallet movements — payable per-request via x402 USDC on Base","exampleAgentPrompt":"Pull the latest DeFi whale alerts from SperaxOS right now — I want to see which wallets are making unusually large on-chain moves so I can gauge market sentiment.","exampleUseCases":[{"title":"Pre-trade market sentiment check","prompt":"Before I ape into this position, can you check SperaxOS for any big whale moves happening on-chain right now? I want to know if smart money is buying or dumping."},{"title":"Automated DeFi trading signal feed","prompt":"Every 15 minutes, grab the latest whale alerts from SperaxOS and flag anything over $500k so I can react to large market-moving transactions in time."},{"title":"Research report on whale activity","prompt":"I'm writing a DeFi market brief — can you fetch the current whale alert data from SperaxOS and summarize which tokens and wallets are seeing the biggest unusual movements today?"}],"resultDescription":"Returns a list of recent whale alert events including large on-chain transactions, the wallets involved, token amounts, chains, and AI-generated intelligence signals about notable DeFi movements. Each alert surfaces data points useful for trading decisions or market monitoring.","failureModes":["402 Payment Required if no valid x402 USDC payment is attached","Stale or empty data if no whale activity meets threshold in recent window","Malformed filter properties result in ignored params or 400 error","Network timeout if Base payment settlement is delayed","Rate limiting if many requests are sent in rapid succession without payment"],"whenToPreferThis":"Choose this endpoint when you need real-time or near-real-time intelligence on large on-chain wallet movements and whale transactions in DeFi markets, especially if you want to avoid API key management and pay micro-amounts per call in USDC. Prefer it over general blockchain explorers when you need AI-curated, signal-grade whale alerts rather than raw transaction data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T18:55:40.747Z","isFirstParty":false,"canonicalSlug":"speraxos-whale-alerts-api-0c0e793b"}