{"uid":"cap_v9NzgRvsY04qfFa2be8Y_","slug":"defi-shield-hazel-vercel-app-1f796d0d","name":"Base Address Label Lookup","description":"Provides human-readable labels and metadata for blockchain addresses to identify wallets, contracts, and services across supported networks.","url":"https://defi-shield-hazel.vercel.app/api/data/address-label","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":{"request":{"address":"0x4200000000000000000000000000000000000006"},"response":{"known":true,"label":"WETH (Wrapped Ether)","address":"0x4200000000000000000000000000000000000006","success":true,"category":"token","verified":true,"is_contract":false,"contract_name":"WETH9","response_time_ms":128}},"exampleRequest":{"address":"0x4200000000000000000000000000000000000006"},"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KmHj9TV_kzuW9KRtoXy-H","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Labels a Base blockchain address with a known protocol name, contract detection, and on-chain verification status","exampleAgentPrompt":"Can you tell me what this Base address is — 0x4200000000000000000000000000000000000006 — specifically whether it's a known protocol, what it's called, what category it falls under, and whether it's verified?","exampleUseCases":null,"resultDescription":"Returns whether the address is recognized (known: true/false), a human-readable label (e.g. 'WETH (Wrapped Ether)'), the category (e.g. 'token'), whether it's verified, whether it is a contract, the contract name if applicable, the original address, and response time in milliseconds.","failureModes":["Unknown address returns known: false with no label","Invalid address format may return an error or empty result","Unverified contract may return is_contract: true but verified: false","Network timeout or upstream failure may result in non-200 response","Address not on Base mainnet may not resolve correctly"],"whenToPreferThis":"Use this endpoint when you need to quickly identify or label a Base network address — particularly to distinguish known DeFi protocols, tokens, and verified contracts from unknown wallets. Prefer this over generic Ethereum explorers when working specifically with Base addresses and needing structured label + category data in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:47:36.448Z","isFirstParty":false}