Personally, I'd really love an official API, heck I would even pay a little to use it. I'm not sure why they won't open it up to business, so many cool things could be built.<p>I recently worked with WhatsAPI (1), my guess is, they are also using this or similar.<p>1 - <a href="https://github.com/mgp25/WhatsAPI-Official" rel="nofollow">https://github.com/mgp25/WhatsAPI-Official</a>