{"uid":"cap_k0NfiK4ynqy3-vtKduZYK","slug":"saylor-innovations-evm-wallet-balance-optimism-71415cb7","name":"Saylor Innovations EVM Wallet Balance — Optimism","description":"EVM Wallet Balances (optimism). Optimism ERC-20 token balance and native ETH balance for any wallet: up to 20 ERC-20 tokens (?tokens=) in one call, with symbols, decimals and human-readable amounts. Live chain head.","url":"https://saylorinnovations.com/api/evm/optimism/balance/:address?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wFAHvwqvT4cY_yu8K476Z","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the native token balance of an Ethereum-compatible wallet address on the Optimism L2 network","exampleAgentPrompt":"What's the current native token balance for wallet address 0x4200000000000000000000000000000000000006 on the Optimism network?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"Can you check the ETH balance on Optimism for wallet 0xAbCd1234567890AbCd1234567890AbCd12345678? I want to know how much is sitting there before I make a move."},{"title":"Verify payment receipt on Optimism","prompt":"Did the payment arrive? Check the on-chain balance of 0x1234567890abcdef1234567890abcdef12345678 on Optimism and tell me the current native token amount."},{"title":"Monitor wallet funding status","prompt":"I need to know if 0xDeAdBeEf1234567890DeAdBeEf1234567890dEaD has any ETH on Optimism — can you pull the current balance for that address?"}],"resultDescription":"Returns the native token (ETH) balance of the specified wallet address on the Optimism L2 network, representing on-chain data at the time of the query.","failureModes":["Invalid or malformed wallet address returns an error","Address with zero balance may return 0 rather than an error","Network congestion or RPC issues could cause timeouts","Non-EVM-compatible address format will fail validation"],"whenToPreferThis":"Use this endpoint when you need to look up the native token balance of a specific wallet on the Optimism L2 network. Prefer this over Ethereum mainnet balance endpoints when the user explicitly references Optimism or OP Mainnet. Ideal for lightweight, single-address balance checks without needing a full blockchain node.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:38:37.088Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-evm-wallet-balance-optimism-71415cb7"}