C#

dotnet add package Authsignal.Server.Client

using Authsignal;

var authsignal = new AuthsignalClient(secret: "YOUR_SECRET_KEY");

using Authsignal;

var authsignal = new AuthsignalClient(secret: "YOUR_SECRET_KEY", baseAddress: "https://au.api.authsignal.com/v1");

var request = new TrackRequest(
  UserId: "usr_123",
  Action: "signIn",
  RedirectUrl: "https://example.com/callback");

var response = await authsignal.Track(request);

if (response.State === UserActionState.CHALLENGE_REQUIRED) {
  // The user should be presented with a challenge
  // Redirect to URL
  var url = response.Url;
}

var request = new ValidateChallengeRequest(Token: token);

var response = await authsignal.ValidateChallenge(request);

var request = new UserRequest(UserId: "usr_123");

var response = await authsignal.GetUser(request);

if (response.IsEnrolled) {
  // The user has set up MFA and can be challenged
} else {
  // The user has either not set up MFA or they have disabled it
}

var request = new ActionRequest(
  UserId: "usr_123",
  Action: "signIn",
  IdempotencyKey: "ik_123");

var request = AuthenticatorRequest(
  UserId: userId,
  OobChannel: OobChannel.SMS,
  PhoneNumber: "+64270000000");

var response = await authsignal.EnrollVerifiedAuthenticator(request);