Bunker offer a simple API in the RESTful style. Each major entities get a specific endpoint url and a set of methods to create, retreive, update and delete those entities.
One big particularity of the API is that all of the calls need to be an
HTTP POST request.
Each request must use the HTTP Basic Authentication.
It's all about JSON, you will send JSON serialized objects and you will received JSON serialized objects.
Keep us posted on your progress, let us know if you are planning to build something. And if you want to share your code in any specific language, that would be fantastic ;).
The API is still in beta mode and is heavily under development.