After thinking for a while, they said, "How about this? You can call upon me for help or information three times. But in exchange, you will owe me a favor for each time I help you."
"Do you understand me?" they asked sternly. "Each time I help you, I can ask you to do anything for me. If you understand and accept my terms, swear the oath now."
Loki wanted to argue and negotiate better conditions for the help, but something about the way the guardian was looking at him made him realize that it was a bad idea.
He couldn't see the guardian's eyes or their face, but he could still perceive the frown emanating from their presence, so he said, "I swear on my Dao Heart to do anything asked of me by the guardian each time they help me."
"Good," the guardian nodded and said in satisfaction.
"In exchange for you behaving so well, I will tell you this. The way forward is to become the king of this domain. Everything around being a demigod is tied to this goal.
