A Friend slacks a lot AND it was on OSRS, while OpiaCows is for RS3 ;)
Also, I assume he needs the 17m cash for a bond, and there's no way OSRS bonds are 17m.
Such a bot is not for release lol, it would cause the economy to shift like crazy.
In general, good moneymaking methods are watched more to see if someone's botting them.
Quests/ban record/login screen/untradeables/...
Also, you're better off hiding more things like your total xp and some levels. I know your RSN just from looking up your total xp on the hiscores.