{"uid":"cap_W3RUj1qmZv48SipHh5b0C","slug":"synthora-whale-alert-b0baa1e4","name":"SYNTHORA Whale Alert","description":"Per-call whale and large-transfer alerts for any token or wallet on Base, keyless. Returns the biggest recent ERC-20 transfers plus a WHALE ACTIVITY / MODERATE / QUIET verdict. Unlike Nansen, Arkham or Whale Alert which are subscription-only, autonomous agents can buy this per-call with a wallet. Agent-to-agent smart-money monitoring for A2A trading and risk systems.","url":"https://whale-alert.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"token":{"type":"string"},"wallet":{"type":"string"},"min_usd":{"type":"number"}}},"responseSchema":{"type":"json","example":{"verdict":"WHALE ACTIVITY","top_transfers_count":10}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jXazC3WoeZiJNJeNP41mS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects and reports large on-chain transfers (whale activity) for any token or wallet on Base, returning a verdict and top transfer count per call.","exampleAgentPrompt":"Check for whale activity on Base for the token 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and flag any transfers above $50,000.","exampleUseCases":[{"title":"DeFi token whale watch","prompt":"Is there any whale activity happening right now for the token 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base? Flag transfers above $100,000."},{"title":"Wallet large-transfer check","prompt":"Check if wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base has made any large transfers above $25,000 recently."},{"title":"Pre-trade whale signal scan","prompt":"Before I buy this token 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb on Base, can you check if there's been any whale activity with transfers over $200,000?"}],"resultDescription":"Returns a JSON object with a 'verdict' field (e.g. 'WHALE ACTIVITY') indicating whether large transfers were detected, and 'top_transfers_count' showing how many significant transfers were found meeting the threshold criteria.","failureModes":["Invalid or malformed token/wallet address returns an error","No whale activity found returns a benign verdict with zero transfer count","Network issues with Base RPC may cause timeouts","min_usd threshold set too low may return large result sets or be rejected","Missing both token and wallet fields may result in a validation error"],"whenToPreferThis":"Choose this endpoint when you need a single, on-demand per-call whale alert for Base network tokens or wallets without committing to a subscription. Ideal for autonomous agents that need to check whale activity conditionally as part of a workflow rather than on a continuous basis. Prefer this over subscription-based whale alert services when cost efficiency per query matters or when checks are sporadic rather than continuous.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:33:28.005Z","isFirstParty":false}