{"uid":"cap_0jXVw7kLheF_uZJvxHKkb","slug":"joe-evm-rpc-live-balance-f9810d78","name":"Joe EVM RPC – Live Balance","description":"Live Base and Ethereum RPC for AI agents: block tip, balances, transactions, and ENS. $0.001 USDC per call on Base.","url":"https://joe-evm-rpc.marnick-yezo.workers.dev/api/chain/live-balance","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"pathParams":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["account"],"properties":{"tokens":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}(,0x[a-fA-F0-9]{40}){0,19}$","maxLength":859,"description":"Comma-separated ERC-20 addresses, max 20"},"account":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"Wallet address (alias: address)"},"network":{"enum":["base","ethereum"],"type":"string","default":"base","description":"EVM network. Default base."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{"tokens":[{"symbol":"USDC","balance":"0x0","contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","decimals":6}],"address":"0x0000000000000000000000000000000000000000","eth_balance":"0x0"},"meta":{"rpc":"https://mainnet.base.org","network":"base","endpoint":"/api/chain/live-balance","cost_usdc":"0.001","request_id":"00000000abcdef01"}}},"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_MYtsYprCpaO-W4fTdQs-0","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":"Fetches the live native ETH balance and optional ERC-20 token balances for a given wallet address on Base or Ethereum mainnet.","exampleAgentPrompt":"What's the live ETH balance and USDC balance (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base mainnet?","exampleUseCases":[{"title":"DeFi portfolio snapshot for a wallet","prompt":"Can you check the live ETH balance and USDC balance on Base for my wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045? The USDC contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913."},{"title":"Verify payment received on-chain","prompt":"Did the wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B receive any USDC on Base yet? Check its current USDC balance at contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913."},{"title":"Ethereum mainnet balance check","prompt":"Look up the current ETH balance for address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Ethereum mainnet — I need the raw on-chain balance right now."}],"resultDescription":"Returns a JSON object containing the wallet's native ETH balance in hex, an array of ERC-20 token balances (each with symbol, hex balance, contract address, and decimals), plus metadata including the RPC endpoint used, network name, cost in USDC, and a unique request ID.","failureModes":["Invalid wallet address format (not a valid 0x hex address) — request rejected at schema validation","Invalid ERC-20 token contract address — token entry may return zero or error","Network not supported — only 'base' and 'ethereum' are valid; other values rejected","Payment failure — x402 micropayment of $0.001 USDC not settled, request blocked","RPC upstream timeout — underlying Base/Ethereum node unreachable, 502/504 error","More than 20 token addresses supplied — schema validation error","No response for a brand-new wallet with no on-chain history — balances returned as 0x0"],"whenToPreferThis":"Choose this endpoint when an AI agent needs real-time, on-chain wallet balances on Base or Ethereum mainnet with per-call micropayment pricing ($0.001 USDC via x402), without needing API keys or subscriptions. It is ideal for agents that need to check ETH and multiple ERC-20 balances in a single call. Prefer it over general-purpose Ethereum node providers when operating in a pay-per-use, agent-native context where x402 payment rails are already available.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:36:00.049Z","isFirstParty":false}