An agent is a software program that performs a specific set of tasks for its user.
Agents are used extensively on the web by search engines to discover new resources, which are then indexed and stored for future recall by search engine users. In this case the agents are robots (called spiders), which comb the web looking for new web documents to capture and index.
When an agent program visits your web site, your web server will create a record called an
agent log.
