Is it legal to use an ssl protected API?

Question

Law in IT

Good afternoon!
There is an application on Google Play that receives information from the server through an SSL-secured API call. With the help of charles, I decrypted SSL traffic, figured out the structure of the transmitted data. I want to use this information to release my application and call this API.
Interested in the legal question of such actions. Is it legal to use an SSL-secured API and build your application based on it?

Answer 1

There is nothing illegal about you using someone's API, as long as it is public and accessible from the outside.
Another thing is that they will quickly cover it for you if they don’t like it.

Answer 2

Sending any data that does not disrupt the performance of remote systems over the Internet is legal. Restricting third-party access is the responsibility of the server owner, i.e., in your case, the API.

Answer 3

Anyone can technically use any public api and they won’t get anything for it, but this is quite easy to detect, so if you do that, you will be quickly covered. You will not receive punishment, but spend your energy on something that is solved in 10 minutes