First of all, I'd like to say that an actual API for at least reading listings on the Energy market/Auction House would be great. But that has already been suggested, so instead of posting another thread about it in Suggestions, I'd like to ask a question.

If a means of doing so were to be found, would simply reading the current Energy market listings with a program (other than the actual client, of course) be against the rules? Not posting or buying any listings, just reading them.
I'd rather know whether or not it's allowed before I waste my time trying to figure out how it would be done (if it's even possible).