diff --git a/Knots/DTO/Group/CreateGroupDto.cs b/Knots/DTO/Group/CreateGroupDto.cs
new file mode 100644
index 0000000..327d750
--- /dev/null
+++ b/Knots/DTO/Group/CreateGroupDto.cs
@@ -0,0 +1,8 @@
+namespace Knots.DTO.Group;
+
+public class CreateGroupDto
+{
+    public string? Nom { get; set; }
+    public int NombreMembres { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Group/DeleteGroupDto.cs b/Knots/DTO/Group/DeleteGroupDto.cs
new file mode 100644
index 0000000..5faa9c2
--- /dev/null
+++ b/Knots/DTO/Group/DeleteGroupDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Group;
+
+public class DeleteGroupDto
+{
+    public string? Id { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Group/GetGroupDto.cs b/Knots/DTO/Group/GetGroupDto.cs
new file mode 100644
index 0000000..cc9f833
--- /dev/null
+++ b/Knots/DTO/Group/GetGroupDto.cs
@@ -0,0 +1,9 @@
+namespace Knots.DTO.Group;
+
+public class GetGroupDto
+{
+    public int Id { get; set; }
+    public string? Nom { get; set; }
+    public int NombreMembres { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Group/UpdateGroupDto.cs b/Knots/DTO/Group/UpdateGroupDto.cs
new file mode 100644
index 0000000..bf01672
--- /dev/null
+++ b/Knots/DTO/Group/UpdateGroupDto.cs
@@ -0,0 +1,9 @@
+namespace Knots.DTO.Group;
+
+public class UpdateGroupDto
+{
+    public int Id { get; set; }
+    public string? Nom { get; set; }
+    public int NombreMembres { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Key/CreateKeyDto.cs b/Knots/DTO/Key/CreateKeyDto.cs
new file mode 100644
index 0000000..0282cbb
--- /dev/null
+++ b/Knots/DTO/Key/CreateKeyDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Key;
+
+public class CreateKeyDto
+{
+    public string? EnKey { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Key/DeleteKeyDto.cs b/Knots/DTO/Key/DeleteKeyDto.cs
new file mode 100644
index 0000000..a08c83d
--- /dev/null
+++ b/Knots/DTO/Key/DeleteKeyDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Key;
+
+public class DeleteKeyDto
+{
+    public int Id { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Key/GetKeyDto.cs b/Knots/DTO/Key/GetKeyDto.cs
new file mode 100644
index 0000000..f4ffe0e
--- /dev/null
+++ b/Knots/DTO/Key/GetKeyDto.cs
@@ -0,0 +1,7 @@
+namespace Knots.DTO.Key;
+
+public class GetKeyDto
+{
+    public int Id { get; set; }
+    public string? EnKey { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Message/CreateMessageDto.cs b/Knots/DTO/Message/CreateMessageDto.cs
new file mode 100644
index 0000000..c07e671
--- /dev/null
+++ b/Knots/DTO/Message/CreateMessageDto.cs
@@ -0,0 +1,8 @@
+namespace Knots.DTO.Message;
+
+public class CreateMessageDto
+{
+    public string? Contenu { get; set; }
+    public DateTime Date { get; set; }
+    public Boolean Type { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Message/DeleteMessageDto.cs b/Knots/DTO/Message/DeleteMessageDto.cs
new file mode 100644
index 0000000..4433379
--- /dev/null
+++ b/Knots/DTO/Message/DeleteMessageDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Message;
+
+public class DeleteMessageDto
+{
+    public int Id { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Message/GetMessageDto.cs b/Knots/DTO/Message/GetMessageDto.cs
new file mode 100644
index 0000000..3348f08
--- /dev/null
+++ b/Knots/DTO/Message/GetMessageDto.cs
@@ -0,0 +1,8 @@
+namespace Knots.DTO.Message;
+
+public class GetMessageDto
+{
+    public string? Contenu { get; set; }
+    public DateTime Date { get; set; }
+    public Boolean Type { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Message/UpdateMessageDto.cs b/Knots/DTO/Message/UpdateMessageDto.cs
new file mode 100644
index 0000000..4fbabda
--- /dev/null
+++ b/Knots/DTO/Message/UpdateMessageDto.cs
@@ -0,0 +1,7 @@
+namespace Knots.DTO.Message;
+
+public class UpdateMessageDto
+{
+    public string? Contenu { get; set; }
+    public DateTime Date { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Role/CreateRoleDto.cs b/Knots/DTO/Role/CreateRoleDto.cs
new file mode 100644
index 0000000..e09b100
--- /dev/null
+++ b/Knots/DTO/Role/CreateRoleDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Role;
+
+public class CreateRoleDto
+{
+    public string? Libelle  { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Role/DeleteRoleDto.cs b/Knots/DTO/Role/DeleteRoleDto.cs
new file mode 100644
index 0000000..eee1a5e
--- /dev/null
+++ b/Knots/DTO/Role/DeleteRoleDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Role;
+
+public class DeleteRoleDto
+{
+    public int Id  { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Role/GetRoleDto.cs b/Knots/DTO/Role/GetRoleDto.cs
new file mode 100644
index 0000000..4464cf2
--- /dev/null
+++ b/Knots/DTO/Role/GetRoleDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.Role;
+
+public class GetRoleDto
+{
+    public string? Id { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/Knots.csproj b/Knots/Knots.csproj
index cdd762d..29e77e6 100644
--- a/Knots/Knots.csproj
+++ b/Knots/Knots.csproj
@@ -19,10 +19,6 @@
     </ItemGroup>
 
     <ItemGroup>
-      <Folder Include="DTO\Group\" />
-      <Folder Include="DTO\Key\" />
-      <Folder Include="DTO\Message\" />
-      <Folder Include="DTO\Role\" />
       <Folder Include="DTO\User\" />
       <Folder Include="Validators\" />
     </ItemGroup>