Thanks for the questions. While we can’t comment on specific applications, you should carefully review our rules and policies for additional information which could inform your approach. Specifically, per the Automation Rules, we prohibit the use of any form of automation to post to trending topics:
Trending topics: You may not automatically post about trending topics on Twitter, or use automation to attempt to influence or manipulate trending topics.
Note that this applies to any use of automation, including from accounts you control and accounts which authorize your application.