Agave stricta (pictured) plants are very drought tolerant. They only require moderate watering throughout spring to fall when the soil dries. Keep the soil almost dry in winter; water once or twice a month in spring and summer.
Avoid overwatering the plant to prevent fungal root rot.
All Agave varieties need a lot of full sunlight. If you want to place your plant indoors, make sure you have a brightly lit sunny window that allows a lot of light.