Is it possible to extend the wolfram language or the wolfram alpha console (the natural language processing tool) to reach some kind DSL So, if i write: create post title the runtime to start REST call and create post in some cloud or call some library (dll)
i'm more interested in natural language command interpretation ... is it possible?
Yes? Depending on what you mean.
Mathematica provides tools related to this. For example you may want to see GrammarRules: