From ECO - English Wiki

Experience (XP) can refer to two types of progression in Eco:

  • Player XP — Progress towards next Skill Point. Gained over time, even when players are offline (though the server must remain online). Player XP rate can be increased by improving nutrition and housing. Server configuration settings can speed up XP gain in different ways.
Main article: Skill_Points
  • Specialty XP — Progress towards next specialty level. Gained by performing an action related to the specialty (harvesting or crafting). The specialty must be learned by spending a Skill Point before XP can be gained.
Main article: Specialties