Anyone using OpenAPI based APIs with Open Web UI beyond personal use?

One of the brands I am associated with, is launcing open web ui at their company. As there are many systems with APIs and most business folks are now API saavy, there are clarifications on whether anyone should be able to add APIs to their session, use PAT, bearer tokens. Also how is the Open API file being generated and hosted. Could not find any demos of the Open API feature on youtube either. Hope the community can help