{"uid":"cap_-2IpC9soBX17Xz0UYDDor","slug":"multi-chain-gas-oracle-whale-watch-whale-watch-6dfe8ed8","name":"Multi-Chain Gas Oracle & Whale Watch – /whale-watch","description":"Live gas prices across Base, Ethereum, Arbitrum, and Optimism, plus ETH price, block number, gas prediction, and large Base whale transfers. Paid via x402 on Base mainnet.","url":"https://gas-optical-production-30aa.up.railway.app/whale-watch?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"count":1,"timestamp":1710000000,"transfers":[{"to":"0x2222...","from":"0x1111...","token":"ETH","tx_hash":"0xabc123","value_eth":2500.5}],"threshold_eth":1000}},"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_OHs35J_5VJr0tx6fdvXhl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live large-value ETH transfer events on Base, filtering transfers above a threshold (default 1000 ETH), along with count, timestamp, sender/receiver addresses, transaction hashes, and ETH values.","exampleAgentPrompt":"Can you pull up the latest whale transfers on Base — I want to see any ETH moves above 1000 ETH, including who sent them, who received them, and the transaction hashes?","exampleUseCases":[{"title":"DeFi trading signal from whale moves","prompt":"Show me all large ETH transfers on Base from the last few minutes — I want to see who's moving more than 1000 ETH so I can decide whether to adjust my position."},{"title":"On-chain alert bot for whale activity","prompt":"Keep an eye on big ETH transfers happening on Base right now and tell me every time a whale moves more than 1000 ETH, including the sender, receiver, and tx hash."},{"title":"Research report on Base whale behavior","prompt":"Pull the latest whale watch data from Base mainnet for me — I need the count of large transfers, the ETH values, and the wallet addresses involved so I can include them in my on-chain activity report."}],"resultDescription":"Returns a JSON object with: a count of qualifying transfers, a Unix timestamp, a threshold_eth value used for filtering, and a transfers array where each entry includes from address, to address, token symbol (ETH), transaction hash, and value in ETH for transfers exceeding the threshold on Base mainnet.","failureModes":["No transfers above threshold in recent blocks — returns empty transfers array with count 0","Payment not fulfilled via x402 — returns 402 Payment Required","Railway hosting downtime — 503 Service Unavailable","Base RPC node latency or outage — may return stale or incomplete data","Invalid or malformed request parameters — 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you specifically need real-time large-value ETH transfer surveillance on the Base network, particularly for whale-watching, trading signals, or on-chain anomaly detection. It is distinct from gas oracle endpoints on the same host and is best suited for agents monitoring market-moving wallet activity rather than fee estimation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T00:39:09.408Z","isFirstParty":false,"canonicalSlug":"multi-chain-gas-oracle-whale-watch-whale-watch-6dfe8ed8"}