I am pretty sure that it would be something like:
function servercmdBuild(%client)
{
%client.player.tool[0] = nametoID(HammerItem);
messageClient(%client, 'MsgItemPickup', '', 0, nametoID(HammerItem));
%client.player.tool[1] = nametoID(WrenchItem);
messageClient(%client, 'MsgItemPickup', '', 1, nametoID(WrenchItem));
%client.player.tool[2] = nametoID(PrintGun);
messageClient(%client, 'MsgItemPickup', '', 2, nametoID(PrintGun));
%client.player.tool[3] = nametoID(MMWand);
messageClient(%client, 'MsgItemPickup', '', 3, nametoID(MMWand));
%client.player.tool[4] = nametoID(MultitoolItem);
messageClient(%client, 'MsgItemPickup', '', 4, nametoID(MultitoolItem));
}