I am the developer of the US-align tool for protein and nucleic  acid structure alignment. We currently offer a command line tool and a plugin for PyMOL. 

We are asked by the community to make a ChimeraX plugin. I have used ChimeraX for cryo-EM structure analysis before and know that there is a related tool called matchmaker. However, I do not know where to start to implement a matchmaker-like plugin for US-align in ChimeraX. Can you give me some recommendations and/or point me to a developer I can work with? Thanks.