{"uid":"cap_OmqR_4BayrStmb6Cs_ZtU","slug":"ethereum-address-activity-lookup-d996eb1a","name":"Ethereum Address Activity Lookup","description":"Ethereum address activity: ETH balance plus recent large transfers in and out. Point it at an exchange wallet, a treasury or a wallet a headline just named, and get the movement behind the story rather than the story.","url":"https://crypto-asistent.com/api/x402/data/address?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":[],"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"pathParams":{"type":"object"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.04","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":"$0.04/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6rxkkVTMZpStEQv8GVII3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.04","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns ETH balance and recent large transfers in and out for a given Ethereum address","exampleAgentPrompt":"Pull up the ETH balance and recent large transfers in and out of this wallet address 0xBE0eB53F46cd790Cd13851d5EFf43D12404d33E8 — I want to see the on-chain movement behind the Binance story I just read.","exampleUseCases":[{"title":"Investigating a headline-named wallet","prompt":"I just saw a news story mentioning the Ethereum address 0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE — can you pull the ETH balance and any large transfers in or out so I can see what actually moved?"},{"title":"Monitoring a DeFi protocol treasury","prompt":"Can you check the on-chain activity for the Uniswap treasury wallet 0x1a9C8182C09F50C8318d769245beA52c32BE35BC — I want to know the current ETH balance and whether there have been any big inflows or outflows recently."},{"title":"Tracking exchange wallet movements","prompt":"Look up this suspected Kraken cold wallet 0xDA9dfA130Df4dE4673b89022EE50ff26f6EA73Cf and tell me the ETH balance plus any large transfers that have happened — trying to figure out if there's been unusual movement."}],"resultDescription":"Returns the ETH balance of the queried address along with a list of recent large ETH transfers (both inbound and outbound), giving context on significant capital movements associated with that wallet.","failureModes":["Invalid or malformed Ethereum address returns an error","Address with no transaction history may return empty transfer list","Very new addresses may have insufficient data","Network congestion or node issues may cause stale or delayed data","Payment failure via x402 protocol prevents call from executing"],"whenToPreferThis":"Use this endpoint when you have a specific Ethereum address and need to quickly understand its current balance and recent large-scale transfer activity — especially useful for investigating wallets named in news stories, monitoring exchange or treasury addresses, or tracking whale activity. Prefer this over the large-transfer firehose endpoint when you want address-specific context rather than a broad market scan.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T12:39:14.176Z","isFirstParty":false,"canonicalSlug":"ethereum-address-activity-lookup-d996eb1a"}