Ysoki are ratlike humanoids with communities on many worlds and a reputation for practical ingenuity. They navigate crowded environments, adapt equipment and build networks of mutual support with considerable skill. Their histories are diverse, and no single home or profession defines them. In a difficult situation, a ysoki may know a route through, someone who can help or a component that can be made to work. Sometimes all three are located behind the same suspicious panel.
Character spark
A station-born quartermaster whose greatest asset is an extensive network of friends who owe one another favours.
Source
Player Core, p. 78; Read the rules on Archives of Nethys.