Just to let you know that we will never know how awesome it is… why asking for credit card if it is free for 200 calls per months? I mean that is purely stupid and mostly strange. Just limit it!!!

Also, you don’t sound very legit, no website, no example, no support, almost the same number of followers than developers… this does not sounds right.
Seems nobody is using this API.

Good luck with your trick, this is very bad business. No trust, never enter any credit info regarded your API, otherwise you are a fool.