Merchants of Knowledge and Magic
Part 1 of the Pentagonal Dominion series
"My secret would plunge the world into chaos." "How much is it worth?" Calinthe is an asexual dragonfly-person who was sent on a mission to find two missing men. She learns one of the men is from a species thought to be extinct, who had the misfortune of being captured in a matriarchal society where all non-women are enslaved. Though she maintains a disguise with help from her companion's illusions, Calinthe is actually intersex. If her secret were to be discovered by the matriarchy, she would be enslaved as well.