Usefulness of the API aside, the tone of it is full of red flags. Combined with all the other red flags, I can't help but to read it like this: "You should be g

Usefulness of the API aside, the tone of it is full of red flags. Combined with all the other red flags, I can't help but to read it like this: "You should be grateful I ever bothered to make an API, if it changes that is your problem. I can't bother to make this API stable or version it, this data is so valuable I assume you will make changes on your end if you hope to integrate with it."