This is a complementary API for BizTalk Management API shipped with BizTalk.
With BizTalkStatus you can get an overview of BizTalk Server current state.
With HostInstance operations you can list and start/stop host instances running in BizTalk.
Publish to IIS of the BizTalk server and run in app pool running with credentials that are in Biztalk Server Administrator group.
Go to http://<your_bts>/BizTalkAdminAPI/Swagger