This was a pretty fun and imaginative setting.

Mankind has figured out magic and power similar to but lesser in scale than the gods. One of the things that the magicians (called Craftsmen and Craftswomen) do is similar to lawyers, involved in arbitrating disputes that involve magical contracts.

Tara is a recently expelled graduate of the Hidden Colleges, recruited by a Craftswoman from one of the major firms, and her first case involves arbitrating the unexpected God of a city.

While clearly fantasy, this was much more a legal or "jaded private eye" novel.