{"uid":"cap_cjdXAna-hnEDKuIGBKAh1","slug":"free-asset-radar-x402-base-address-profile-15236915","name":"Free Asset Radar x402 – Base Address Profile","description":"Stable edge-hosted x402 utilities for autonomous agents.","url":"https://free-asset-radar-x402.besenok2018.workers.dev/api/x402/base-address-profile?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"eth":"0.01","nonce":12,"address":"0x...","network":"eip155:8453","isContract":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_IkLGohxp8_afsPpnODqEl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns an on-chain profile for a Base network address, including ETH balance, nonce, and whether it is a contract.","exampleAgentPrompt":"Can you pull the on-chain profile for the Base address 0xAbC123...def456? I want to know its ETH balance, nonce, and whether it's a smart contract.","exampleUseCases":[{"title":"Check if wallet is a contract","prompt":"Is the Base address 0x1234567890abcdef1234567890abcdef12345678 a smart contract or a regular wallet, and what's its current ETH balance?"},{"title":"Verify address activity before payment","prompt":"Before I send funds, can you check the nonce and ETH balance of 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef on Base so I know it's an active account?"},{"title":"Audit on-chain stats for a DeFi address","prompt":"Give me a quick on-chain profile of the Base address 0xaAbBcCdDeEfF00112233445566778899aAbBcCdD — I need its ETH balance, transaction count, and whether it's a contract."}],"resultDescription":"Returns a JSON object containing: the canonical address (0x...), current ETH balance as a decimal string, the nonce (transaction count), the network identifier ('eip155:8453' for Base mainnet), and a boolean isContract indicating whether the address is a smart contract.","failureModes":["Invalid or malformed address returns an error response","Address not found or zero-activity address may return zero balances and nonce","Network connectivity issues to Base RPC may cause timeouts","Missing required address parameter results in a bad request error","Rate limiting or payment failure may block the x402-gated request"],"whenToPreferThis":"Choose this endpoint when you need a quick, lightweight on-chain profile of a Base network address without setting up your own RPC node. It is ideal for agents that need to verify wallet vs. contract status, check ETH balance, or inspect nonce before executing a transaction or payment on Base (eip155:8453). Prefer it over full blockchain explorers when you only need these core fields and want a simple JSON response via a pay-per-call x402 model.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:36:39.410Z","isFirstParty":false,"canonicalSlug":"free-asset-radar-x402-base-address-profile-15236915"}