The semantic web shall enable web agents an efficient, precise, and comprehensive extraction of knowledge. Nevertheless, this new web is not likely to be adopted in the immediate future.

In this article, we present a specification of a new framework in order to extract knowledge from today?s dynamics non-semantic web. Our proposal is novel in that it associates semantics with the information extracted, which improves agent interoperability; it can also deal with changes to the structure of a web page, which improves adaptability; furthermore, it achieves to delegate the knowledge extraction procedure to specialist agents, easing software development and promoting software reuse and maintainability.