using Clerk.BackendAPI;
using Clerk.BackendAPI.Models.Operations;
using Clerk.BackendAPI.Models.Components;

var sdk = new ClerkBackendApi(bearerAuth: "<YOUR_BEARER_TOKEN_HERE>");

var res = await sdk.EmailAddresses.GetAsync(emailAddressId: "email_address_id_example");

// handle response

using Clerk.BackendAPI.Helpers.Jwks;
using System;
using System.Net.Http;
using System.Threading.Tasks;

public class UserAuthentication
{
    public static async Task<bool> IsSignedInAsync(HttpRequestMessage request)
    {
        var options = new AuthenticateRequestOptions(
            secretKey: Environment.GetEnvironmentVariable("CLERK_SECRET_KEY"),
            authorizedParties: new string[] { "https://example.com" }
        );

        var requestState = await AuthenticateRequest.AuthenticateRequestAsync(request, options);

        return requestState.isSignedIn();
    }
}