We are a public library that subscribes to 3M Cloud Library and want to use 3M's API to authentication our patrons who want to use the Cloud Library.
3M Cloud Library can connect and authorize using a REST based web service that is hosted by the library. We have documentation that provides the authorization API specification which should be implemented by the library to develop the REST web service. I've attached that documentation.
Essentially the process should use http 'post' to check our library server for a valid patron account, and then forwards the validation back to the 3M server.