[nradov]

Could you be more specific about what part of the website is bullshit? I've used some of those APIs and they worked as documented.

Vendor hostility is only an issue if you actually need to work directly with the vendor. Most of them have no incentive to help other developers who aren't their customers. Why would they? If you're doing something new that requires active Epic cooperation then it's best to partner with a major Epic customer, and put a formal legal agreement in place.