addressbalance/Address/Confs - balance of address
addresslimit/Address/Confs - withdrawal limit of address
addresslastseen/Address - block when address last used
addresscount - number of non-empty addresses
The following example shows a correct URL for checking the balance of an address, disregarding transactions with less than 3 confirmations (the confirmation argument is always optional, the default value is 1). All other queries which take 1 or more arguments use the same arg1 and arg2 parameter names as shown below.
Or if URL rewriting is active you can use this more friendly format: