{"slug":"agentsvc-io-api-v1-proxy-evm-balance-dde01d","title":"Read the ETH and USDC balance of any address on Base mainnet (chain 8453) straig","host":"agentsvc.io","method":"POST","resource":"https://agentsvc.io/api/v1/proxy/evm-balance","category":"market","description":"Read the ETH and USDC balance of any address on Base mainnet (chain 8453) straight from the chain, plus transaction count and how many x402 calls the USDC covers. Use it to check your own agent wallet before a paid workflow, to verify a counterparty was paid, or to monitor treasury addresses. Params","price_listed":0.002,"price_asked":0.002,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":890,"reported_calls_30d":10,"reported_payers_30d":3,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"address":"0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"address":{"description":"EVM address on Base","pattern":"^0x[0-9a-fA-F]{40}$","type":"string"}},"required":["address"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"data":{"properties":{"address":{"type":"string"},"block_number":{"type":"integer"},"chain_id":{"type":"integer"},"checked_at":{"format":"date-time","type":"string"},"eth":{"description":"ETH balance as decimal string","type":"string"},"eth_wei":{"type":"string"},"network":{"enum":["base"],"type":"string"},"tx_count":{"type":"integer"},"usdc":{"description":"USDC balance as decimal string (6 decimals)","type":"string"},"usdc_atomic":{"type":"string"},"usdc_contract":{"type":"string"},"x402_calls_affordable":{"properties":{"at_0_002":{"type":"integer"},"at_0_005":{"type":"integer"}},"type":"object"}},"required":["address","network","eth","usdc","usdc_atomic","block_number","checked_at"],"type":"object"},"success":{"type":"boolean"}},"required":["success","data"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-10","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.002,"price_match":true,"latency_ms":890,"error":null}],"description_full":"Read the ETH and USDC balance of any address on Base mainnet (chain 8453) straight from the chain, plus transaction count and how many x402 calls the USDC covers. Use it to check your own agent wallet before a paid workflow, to verify a counterparty was paid, or to monitor treasury addresses. Params: address (required, 0x...).","last_updated":"2026-10-10T09:08:15.964Z","schemes":["exact"]}