That was mentioned quite a while back by the team, seems it was few months ago that they said that smart contract was audited.
That is astanrad practice for any quality ICO,and since Agate is definietly one of those,they natuarally checked their smart contract,as tats the only way to be sure that there are no major flaws that could potentially endanger the project.
True,this is standard practice,thats why im asking as i know that badly written smart contract can cause many issues,or that even team can exploit it later one.I know that people will be more likely to invest if they know something as important as smart comtract has been verified.