diff --git a/CleanArchitecture/CleanArchitecture.Application/Contracts/Identity/IAuthService.cs b/CleanArchitecture/CleanArchitecture.Application/Contracts/Identity/IAuthService.cs
new file mode 100644
index 0000000..3cedfcc
--- /dev/null
+++ b/CleanArchitecture/CleanArchitecture.Application/Contracts/Identity/IAuthService.cs
@@ -0,0 +1,10 @@
+using CleanArchitecture.Application.Models.Identity;
+
+namespace CleanArchitecture.Application.Contracts.Identity
+{
+    public interface IAuthService
+    {
+        Task<AuthResponse> Login(AuthRequest request);
+        Task<RegistrationResponse> Register(RegistrationRequest request);
+    }
+}
diff --git a/CleanArchitecture/CleanArchitecture.Application/Models/Identity/AuthRequest.cs b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/AuthRequest.cs
new file mode 100644
index 0000000..ed2fe06
--- /dev/null
+++ b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/AuthRequest.cs
@@ -0,0 +1,8 @@
+namespace CleanArchitecture.Application.Models.Identity
+{
+    public class AuthRequest
+    {
+        public string Email { get; set; } = string.Empty;
+        public string Password { get; set; } = string.Empty;
+    }
+}
diff --git a/CleanArchitecture/CleanArchitecture.Application/Models/Identity/AuthResponse.cs b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/AuthResponse.cs
new file mode 100644
index 0000000..f85e5b6
--- /dev/null
+++ b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/AuthResponse.cs
@@ -0,0 +1,10 @@
+namespace CleanArchitecture.Application.Models.Identity
+{
+    public class AuthResponse
+    {
+        public string Id { get; set; } = string.Empty;
+        public string Username { get; set; } = string.Empty;
+        public string Email { get; set; }  = string.Empty;
+        public string Token { get; set; } = string.Empty;
+    }
+}
diff --git a/CleanArchitecture/CleanArchitecture.Application/Models/Identity/JwtSettings.cs b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/JwtSettings.cs
new file mode 100644
index 0000000..25fa665
--- /dev/null
+++ b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/JwtSettings.cs
@@ -0,0 +1,11 @@
+
+namespace CleanArchitecture.Application.Models.Identity
+{
+    public class JwtSettings
+    {
+        public string Key { get; set; } = string.Empty;
+        public string Issuer { get; set; } = string.Empty;
+        public string Audience { get; set; } = string.Empty;
+        public double DuracionInMinutes { get; set; }
+    }
+}
diff --git a/CleanArchitecture/CleanArchitecture.Application/Models/Identity/RegistrationRequest.cs b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/RegistrationRequest.cs
new file mode 100644
index 0000000..d7cf045
--- /dev/null
+++ b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/RegistrationRequest.cs
@@ -0,0 +1,12 @@
+
+namespace CleanArchitecture.Application.Models.Identity
+{
+    public class RegistrationRequest
+    {
+        public string Nombre { get; set; } = string.Empty;
+        public string Apellidos { get; set; } = string.Empty;
+        public string Email { get; set; } = string.Empty;
+        public string Username { get; set; } = string.Empty;
+        public string Password { get; set; } = string.Empty;
+    }
+}
diff --git a/CleanArchitecture/CleanArchitecture.Application/Models/Identity/RegistrationResponse.cs b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/RegistrationResponse.cs
new file mode 100644
index 0000000..c3a851c
--- /dev/null
+++ b/CleanArchitecture/CleanArchitecture.Application/Models/Identity/RegistrationResponse.cs
@@ -0,0 +1,11 @@
+
+namespace CleanArchitecture.Application.Models.Identity
+{
+    public class RegistrationResponse
+    {
+        public string UserId { get; set; } = string.Empty;
+        public string Username { get; set; } = string.Empty;
+        public string Email { get; set; } = string.Empty;
+        public string Token { get; set; } = string.Empty;
+    }
+}