An agent can mean different things depending on the context. Here are a few common definitions:

  1. General Definition:
    An agent is someone or something that acts on behalf of another or exerts power to cause a change. This can apply to people, organizations, or entities.
  2. Business and Legal:
    An agent is a person authorized to act on behalf of another person or organization, known as the principal. For example:
    • A real estate agent helps clients buy or sell property.
    • A sports agent negotiates contracts for athletes.
  3. Science and Chemistry:
    An agent is a substance that brings about a specific chemical or physical change. For example:
    • A cleaning agent is used to remove dirt or stains.
    • A reducing agent donates electrons in a chemical reaction.
  4. Technology and Artificial Intelligence (AI):
    In AI and computing, an agent is a program or system that acts on behalf of a user or another program to accomplish a task. For example:
    • Chatbots like me are AI agents designed to assist users.
    • A software agent may automate tasks in a system.
  5. Philosophy and Sociology:
    An agent refers to an individual or entity capable of intentional action or decision-making. In sociology, agency relates to the capacity to act independently and make choices.
  6. Government and Espionage:
    An agent might refer to a person working for a government agency, such as an intelligence officer or undercover operative.