Kandra's are used by the main houses as spies against the other houses.
Kandras are paid for their contracts using atium, the most valuable metal. For more information, see the last section of the book the Hero of Ages.
The Mistborn series was written by Brandon Sanderson.
The series is still called Mistborn, but the new setting starts with the book The Alloy of Law.
The Mistborn series by Brandon Sanderson consists of three books in the original trilogy: "Mistborn: The Final Empire," "Mistborn: The Well of Ascension," and "Mistborn: The Hero of Ages." There are also additional books and novellas set in the same world.
Kelsier
Tor Fantasy .
three books
They were used for pushing so the mistborn could propel themselves into the air.
She wanted to make him the ideal king.
It is set in an Urban setting with modern technologies
The new series happens many years after the original, and it does have a steampunk feel to it.
Brandon Sanderson said that it is going to be a 'trilogy of a trilogies'. The second sequel is set in an urban setting with modern technology. However The Alloy of Law is a stand alone short novel, not the start of the second sequel.