When the bot code is in it's final stages of development, and I'm thinking we're slowly approaching that area, we should think of ways of implementing a way for users to request an on-demand check of specific pages.
One idea I have is to create an interface for the user to OAuth into an interface, where they can input a page, or list of pages, to lookup and/or run checks on.
Working on the bot code to make it more modular, the interface can utilize the bot's internals as it's engine. More details to come.
This is low priority for now until the bot is nearly finished in development.