We have prepared ping command, which only returns code 1000 and you could try WAPI functionality. Assuming that the query contains all required items with the correct value.
Example of use:
XML request:
<request> <user>tester</user> <auth>463870369aef393f3b82274107c9ade4b5b2a414</auth> <command>ping</command> <clTRID>6Aqj3kn9nNLL</clTRID> </request>
XML response:
<response> <code>1000</code> <result>OK</result> <timestamp>1286463108</timestamp> <clTRID>6Aqj3kn9nNLL</clTRID> <svTRID>1286463108.1704.23122</svTRID> <command>ping</command> </response>