Thank you for the great question. We’ll get back to you in more detail after the US holiday weekend.
Short initial answer: all our public APIs are “stable” today – i.e. we don’t have public deprecated APIs today. If/when we do deprecate an API we would let folks know broadly about this.
Also, welcome to the Developer Community! If you’d like to schedule a consultation call, or to chat more with us live about our APIs, let us know and we’ll get that set up.
Which APIs are you interested in using? We’d be happy to talk with you through your use case.