{"uid":"cap_W1yyoQQ3eAorsZ6-gzUPc","slug":"delx-base-native-balance-28d3226f","name":"Delx Base Native Balance","description":"Native ETH balance for one address on Base mainnet for $0.001 USDC via live JSON-RPC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.","url":"https://api.delx.ai/api/v1/x402/base-balance","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string"}}},"responseSchema":{"type":"json","example":{"result":{},"tool_name":"get_base_native_balance"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_g9aaai9BPUox70QaOSb1c","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the native ETH balance for a single Ethereum address on Base mainnet via live JSON-RPC, charged at $0.001 USDC per call.","exampleAgentPrompt":"What's the current native ETH balance of the wallet 0x4838B106FCe9647Bdf1E7877BF73cE8B0BAD5f97 on Base mainnet?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"Can you tell me how much ETH the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 is holding on Base mainnet right now?"},{"title":"Pre-transaction gas verification","prompt":"Before I send a transaction, check if wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e has enough native ETH on Base to cover gas fees."},{"title":"Agent treasury monitoring","prompt":"Look up the current ETH balance on Base for our agent's treasury wallet at 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B so I know if it needs topping up."}],"resultDescription":"Returns the native ETH balance (in wei or ETH) for the queried address on Base mainnet, sourced from a live JSON-RPC call at the time of the request.","failureModes":["Invalid or malformed Ethereum address returns an error response","Network or RPC connectivity issues may cause timeouts or 5xx errors","Payment failure (insufficient USDC or x402 payment not processed) results in a 402 response","Address with no on-chain activity may return a zero balance (not an error)"],"whenToPreferThis":"Choose this endpoint when you need a live, real-time native ETH balance on Base mainnet for a single address and are comfortable with a micro-payment ($0.001 USDC) per call. Prefer it over general-purpose RPC nodes when you need a simple, agent-friendly API without managing your own RPC infrastructure or API keys.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:59:48.477Z","isFirstParty":false}