{"uid":"cap_mImA2HQFjBrTXs8D44pVy","slug":"x402-gateway-whale-alerts-94036441","name":"x402-gateway Whale Alerts","description":"Pay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, og_image_generator=$0.001, jobs=$0.002. MCP flat rate $0.001.","url":"https://x402.freeq.one/tools/whale_alerts","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string","description":"Ethereum address to monitor"},"direction":{"type":"string","description":"in, out, or both (default both)"},"min_value_eth":{"type":"number","description":"Minimum ETH value threshold"}}},"responseSchema":{"type":"json","example":{"result":{}}},"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_on_f2BQuaXC3ARott8vy_","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":"Fetches large on-chain cryptocurrency transfer alerts (whale movements) across blockchain networks, paid per-call via x402 on Base.","exampleAgentPrompt":"Show me the latest whale alerts — large on-chain transfers over $1 million in ETH on Ethereum from the past hour.","exampleUseCases":[{"title":"Real-time whale movement monitoring","prompt":"Show me any large ETH transfers over $500k that happened in the last 30 minutes so I can gauge market sentiment."},{"title":"Token-specific whale tracking for traders","prompt":"Are there any big USDC whale movements on-chain right now? I want to know if someone is moving tens of millions before I make a trade."},{"title":"DeFi bot whale signal detection","prompt":"Pull the latest whale alerts for BTC and ETH — anything above $2 million — so my trading bot can factor large transfers into its strategy."}],"resultDescription":"Returns a list of large on-chain transfer events including transaction hashes, sender and receiver wallet addresses, token type, amount transferred, USD value, blockchain network, and timestamp. Useful for identifying market-moving wallet activity.","failureModes":["Payment not received or x402 payment header missing — returns 402 Payment Required","No whale alerts found for specified parameters — returns empty result set","Invalid token symbol or unsupported chain — returns error or empty response","Network timeout if upstream blockchain data provider is slow","Rate limiting if too many calls in a short window"],"whenToPreferThis":"Choose this endpoint when you need real-time or near-real-time large on-chain transfer alerts and want to pay per-call with no subscription, using USDC on Base via x402. Prefer over scraping block explorers or subscribing to expensive whale-tracking SaaS when usage is intermittent.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:43:30.228Z","isFirstParty":false}