What T-Rex did

• The initial test run revealed base rejection of the new contract surface with unknown keyword errors for authenticate, user, and magic_auth fields and a NoMethodError for create_radar_challenge; the head then serialized the new request bodies and posted to the expected paths, surfacing a mismatch where WorkOS::MagicAuthSendMagicAuthCodeAndReturnResponse is returned instead of WorkOS::UserCreateResponse and authentication_factor_id is missing from the response.
• The generated-models artifacts show the before state with missing/new contract surface constants and missing readers, and the after state exits with a clean RESULT SUCCESS and all requested constants present and initialized from a hash.
• The radar-signals artifacts show the before run failing with an unknown signals_id keyword and no model_signals_id accessor, and the after run posting to /radar/attempts with signals_id set, returning 201 and model_signals_id_value matching the posted id.

_{Ran code and verified through T-Rex}

1. General comment

   create_user returns MagicAuthSendMagicAuthCodeAndReturnResponse instead of the documented UserCreateResponse class

   • Bug
     • The PR contract requires create_user to return WorkOS::UserCreateResponse including radar_auth_attempt_id. The head runtime scenario posted the correct body to /user_management/users and exposed radar_auth_attempt_id, but the instantiated response object's class was WorkOS::MagicAuthSendMagicAuthCodeAndReturnResponse, not WorkOS::UserCreateResponse. This is caused by UserCreateResponse being a constant alias, so callers inspecting the class or relying on a distinct response model do not receive the documented class.
   • Cause
     • lib/workos/user_management/user_create_response.rb:6 aliases UserCreateResponse to MagicAuthSendMagicAuthCodeAndReturnResponse, and lib/workos/user_management.rb:772 constructs that alias, producing an object whose runtime class remains WorkOS::MagicAuthSendMagicAuthCodeAndReturnResponse.
   • Fix
     • Define WorkOS::UserCreateResponse as its own response model class with the same relevant attributes, including radar_auth_attempt_id, rather than aliasing it to MagicAuthSendMagicAuthCodeAndReturnResponse.

   _{Ran code and verified through T-Rex}

2. General comment

   SendRadarSmsChallengeResponse drops authentication_factor_id from radar challenge responses

   • Bug
     • The PR contract requires create_radar_challenge to return WorkOS::SendRadarSmsChallengeResponse with authentication_factor_id and verification_id. The head runtime scenario posted the expected body to /user_management/radar_challenges and returned WorkOS::SendRadarSmsChallengeResponse with verification_id, but response.authentication_factor_id was not available even though the fake API response included authentication_factor_id.
   • Cause
     • lib/workos/user_management/send_radar_sms_challenge_response.rb:7-20 maps and exposes only verification_id and phone_number; authentication_factor_id is missing from HASH_ATTRS, attr_accessor, and initialize assignment.
   • Fix
     • Add authentication_factor_id to SendRadarSmsChallengeResponse HASH_ATTRS, attr_accessor list, and initialize assignment so the SDK preserves the API field.

   _{Ran code and verified through T-Rex}