Does something similar to the IPBSDK exist for PunBB?

Hi!

I'm thinking about switching over from Invision to PunBB, but my website needs a lot of integration stuff, so basically I'm wondering how easy it is to do that with PunBB. For Invision, I'm using something called the IPBSDK which gives you access to the invision functions. (Well, technically, they're rewritten from scratch, but anyway)

An example: I can put a login form on my frontpage, which executes the following command: $SDK->login($user, $pass);

Another example: I have my own update user settings page (since I have custom written user fields). When updating, say, the user password, I can do like this: $SDK->update_user($user, $array);

Would this kind stuff be possible with PunBB?