An agent is an autonomous entity with an ontological commitment and agenda of its own. The term originated in philosophy. Each agent possesses the ability to act autonomously; this is an important distinction because a simple act of obedience to a command does not qualify an entity as an agent. Nevertheless in business and in law an agent is often acting on a principal's behalf and has a legal duty to act in that person's best interest. An agent may interact or negotiate with its environment and/or with other agents. It may make decisions, such as whether to trust and whether to cooperate with others.
The term agent is often used in various areas to mean specific people or items:
- In biology, an agent is a type of virus.
- In linguistics, an agent is a noun carrying out an action.
- In microeconomics, an agent is a person who makes a decision on matters affecting the interests of a principal. Principal-agent theory describes appropriate contracts between the two that result in the best interests of the principal being carried through and is an important element of information economics, the theory of labour markets and in executive remuneration .
- In multi-agent systems, software agents work together in a virtual enviroment. See also user agents, mail transfer agents, management agents.
- For some agent-based computer systems, object request brokers (ORBs) complement and speed up the response time of the system, by brokering the requests of the system.
- In The Matrix, The term agent is also used for sentient programs that battle the humans fighting for freedom.
- Forté Agent is a news and mail client for Windows which was popular in the 1990s
- Agent (law) - In law an agent is a person authorized to act for another person or organization, with delegated authority, such as a person holding a power of attorney under the law of agency also known as an "attorney-in-fact" in contrast to an "attorney at law". Examples:
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