The Novak one uses our legacy API Key. The official Infusionsoft SDK allows for both legacy api keys and OAuth 2.0. OAuth is the preferred way, and we are currently working towards removal of legacy keys.
I have infusion account so do I need to create developer account to get client id and secret key for OAuth?
And I saw they are asking for credit card details while creating new app. So does it charge any? If there is a documentation on it and you can provide it will be great help.