Query Parameters
Your Etherscan API key.
Chain ID to query, eg
1 for Ethereum, 8453 for Base from our supported chains.Set to
account for this endpoint.Set to
balance for this endpoint.The address to query, like
0xfefefefefefefefefefefefefefefefefefefefe. Up to 20 addresses can be queried, separated by commas.Use
latest for the last block number of the chain. Also accepts a specific block number in hex format, like 0x10d4f up to the last 128 blocks. For historical balances, use the Historical Balance endpoint.