{"uid":"cap_3r1ZX2BxQ_ttQOiKPbL-I","slug":"onvexia-whale-alerts-cd19f17f","name":"Onvexia Whale Alerts","description":"Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.","url":"https://onvexia.com/v1/whales/alerts","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"data":[],"meta":{"docs":"https://onvexia.com/openapi.json","endpoint":"/v1/whales/alerts"}}},"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_z9k4Ce4_5Knz5_VhfhF40","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":"Returns large on-chain transaction alerts (whale movements) across multiple blockchains with labelled addresses and asset metadata.","exampleAgentPrompt":"Pull the latest whale alerts from Onvexia so I can see which large wallets are moving significant funds across chains right now.","exampleUseCases":[{"title":"Crypto trader whale movement monitor","prompt":"Check Onvexia for any big whale alerts in the last few hours — I want to know if any large wallets are moving ETH or BTC before I make a trade."},{"title":"DeFi protocol risk surveillance","prompt":"Get me the latest whale alerts from Onvexia for any large transfers involving labelled exchange or protocol addresses — I need to flag unusual outflows for a risk report."},{"title":"On-chain investigator address tracking","prompt":"Pull whale alerts from Onvexia and filter for any flagged or labelled addresses moving funds — I'm trying to track a known large holder's activity."}],"resultDescription":"Returns a JSON object with a data array of whale alert events (large on-chain transactions), including labelled sender/receiver addresses, asset identifiers, chain, amount, and timestamps, plus a meta object pointing to the full OpenAPI docs at onvexia.com/openapi.json.","failureModes":["Empty data array returned when no whale alerts match the filter criteria","Invalid or unrecognised properties parameter returns an error or empty result","Payment not processed correctly via x402 protocol results in a 402 response blocking the call","Rate limiting if the endpoint is called too frequently without valid payment","Stale data if the analytics pipeline has a processing delay"],"whenToPreferThis":"Choose this endpoint when you need real-time or near-real-time large transaction alerts across multiple blockchains from a single API, especially when you want labelled addresses and cross-chain coverage in one call rather than querying individual chain explorers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-19T12:56:17.769Z","isFirstParty":false}