{"uid":"cap_sgGyNKm24Yr8gGU4-hHbC","slug":"agentsapi-top-on-chain-address-label-lookup-4181b350","name":"agentsapi.top On-Chain Address Label Lookup","description":"On-chain address identity label lookup on Base (100k+ curated entity labels). Pay per call with USDC via x402.","url":"https://agentsapi.top/v1/label/:address?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["address"],"properties":{"address":{"type":"string","format":"evm-address"}}},"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_5kyoS8jtyzoV7OZmgCqx_","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 a curated human-readable identity label for a given Base blockchain address from a dataset of 100k+ named entities.","exampleAgentPrompt":"Can you tell me what entity or organization is associated with the Base address 0x4200000000000000000000000000000000000006? I want to know if it's a known protocol, exchange, or named wallet.","exampleUseCases":[{"title":"Identify counterparty in DeFi transaction","prompt":"I just received a transaction from 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD on Base — can you look up who that address belongs to so I know if it's a known DEX or protocol?"},{"title":"Label unknown contract before interaction","prompt":"Before I interact with the contract at 0x2626664c2603336E57B271c5C0b26F421741e481 on Base, can you check if it has a known identity label so I know it's a legitimate project?"},{"title":"Enrich on-chain analytics dashboard","prompt":"I have a list of Base addresses from my analytics report — can you look up the label for 0x4Dfe1EbbF22b694f5177a6B0b4aD8DA9e1FBF2ec so I can annotate who it belongs to in my dashboard?"}],"resultDescription":"Returns a human-readable identity label (e.g. organization name, protocol name, exchange name) associated with the queried Base blockchain address, drawn from a curated dataset of 100,000+ named entities. If no label exists, may return an empty or null result.","failureModes":["Address not found in label dataset — returns null or empty label","Invalid address format — returns 400 or error response","Payment failure via x402 — call rejected if USDC payment not processed","Rate limiting or quota exceeded — returns 429 error","Network or upstream service unavailability — returns 5xx error"],"whenToPreferThis":"Choose this endpoint when you need to quickly resolve a Base blockchain address to a known human-readable entity label without running complex on-chain analytics. It is ideal for enriching transaction data, annotating dashboards, or performing counterparty due diligence on Base. Prefer it over manual EDGAR or block explorer lookups when you need fast, pay-per-call resolution with a large pre-curated label set specifically tuned for the Base network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:35:02.068Z","isFirstParty":false,"canonicalSlug":"agentsapi-top-on-chain-address-label-lookup-4181b350"}