Index: iknow-api/Services/Interfaces/IAuthService.cs
===================================================================
--- iknow-api/Services/Interfaces/IAuthService.cs	(revision 41e4f9f182d0e57d4c515deb41ea1e59a02ca894)
+++ iknow-api/Services/Interfaces/IAuthService.cs	(revision 41e4f9f182d0e57d4c515deb41ea1e59a02ca894)
@@ -0,0 +1,12 @@
+using FinXaccesApi.Controllers;
+using FinXaccesApi.DTOs;
+
+namespace FinXaccesApi.Services
+{
+    public interface IAuthService
+    {
+        Task<bool> RegisterAsync(UserDto userDto);
+        Task<string?> LoginAsync(UserDto userDto);
+        Task<int> GetUsersCountAsync();
+    }
+}