{"sample":true,"note":"Static example of what /eth/balance returns; not live data and not charged. Call without sample=1 and pay $0.003 with any x402 client for a live result.","tool":"/eth/balance","price":"$0.003","example":{"chain":"Ethereum","chainId":1,"address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","balanceWei":"1234500000000000000","balance":"1.2345","symbol":"ETH","block":123456789}}