2 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Native ETH balance plus up to 20 ERC20 token balances for one wallet on Base mainnet, in a single Multicall3 round trip regardless of token count.
Bulk wallet balances on Ethereum, Base, Arc or BNB Chain: up to 50 wallets in one call, the native coin or one ERC20 you name, all read at the same block through Multicall3. Pass ?addresses=0x..,0x..&token=&chain=. Cheap...