I have been looking for something like this for a new RESTful service I am writing (I'm new to web APIs, but not to other c# programming).

What I didn't glean from the code or your article is how to I implement this into a Web API application. I am using VS 2022 and Core 6. I presume it would get wired into the Startup's ConfigureServices, but I don't see how that's done.

Is it possible to provide a snip to show us?

O the JWTService Class line 37
it should be
TokenValidationParameters tokenValidationParameters = GetValidationParameters();
and not
TokenValidationParameters tokenValidationParameters = GetTokenValidationParameters();