A psi agent is an individual who has the apparent ability to manifest certain classes of anomalous phenomena or abilities. Typically this includes ESP and PK phenomena.
ESP phenomena and abilities include Telepathy, Clarivoyance (also known as Remote Viewing) and After Death Communications (such as Mediumship). PK phenomena and abilities include macroPK (influencing objects in the common world), and microPK (influencing the world at the molecular level). Some common examples of PK include the poltergeist phenomena, healing, thought Photography and perhaps electronic voice phenomena.