I\'m creating a REST api in ASP.NET Core 1.0. I was using Swagger to test but now I added JWT authorization for some routes. (with UseJwtBearerAuthentication)>
To expand on HansVG answer which worked for me (thanks) and since I don't have enough contribution points I can't answer emseetea question directly. Once you have the Authorization textbox you will need to call the endpoint that generate the token which will be outside your must [Authorize] area of endpoints.
Once you have called that endpoint to generate the token from the endpoint you can copy it out of the results for that endpoint. Then you have the token to use in your other areas that are must [Authorize]. Just paste it in the textbox. Make sure, as HansVG mentioned, to add it in the correct format, which needs to include "bearer ". Format = "bearer {token}".