{"uid":"cap_J2ac5okoHuj0o3vNKi99k","slug":"ethereum-address-activity-lookup-c1aca469","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://asistent-crypto.vercel.app/api/x402/data/address","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":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SJsltOgvWpqOSsBBIcwkb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the ETH balance and recent large transfers in and out for a given Ethereum address","exampleAgentPrompt":"Pull up the ETH balance and recent large transfers for this Ethereum address: 0xBE0eB53F46cd790Cd13851d5EFf43D12404d33E8 — I want to see what's been moving in and out.","exampleUseCases":[{"title":"Investigate exchange wallet after headline","prompt":"I just saw a news article about Binance's cold wallet — can you check the ETH balance and recent large transfers for 0xBE0eB53F46cd790Cd13851d5EFf43D12404d33E8 so I can see the actual on-chain activity behind the story?"},{"title":"Monitor DAO treasury wallet activity","prompt":"Keep an eye on this DAO treasury address 0x8617E340B3D01FA5F11F306F4090FD50E238070D — what's the current ETH balance and have there been any large transfers recently?"},{"title":"Due diligence on a named wallet","prompt":"Someone on crypto Twitter is claiming this wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B is about to dump — can you pull the ETH balance and recent big outbound transfers so I can see if there's anything to it?"}],"resultDescription":"Returns the ETH balance of the specified address along with a list of recent large transfers (both inflows and outflows), including transfer amounts, counterparty addresses, and direction, enabling on-chain movement analysis without needing a full blockchain explorer.","failureModes":["Invalid or malformed Ethereum address returns an error","Address with no recent large transfers returns empty transfer list but valid balance","Network or RPC provider downtime may cause timeouts","Payment failure (insufficient USDC or x402 protocol error) blocks the request","Rate limiting if called too frequently"],"whenToPreferThis":"Use this endpoint when you need a quick snapshot of a specific Ethereum address — its current ETH balance plus recent large-value transfers — without querying a full blockchain explorer. Ideal for investigating wallets named in news stories, monitoring exchange or treasury wallets, or doing rapid due diligence on a specific address. Prefer this over general market data endpoints when the user has a specific address in mind and wants movement context, not price data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:41:30.243Z","isFirstParty":false}