diff --git a/src/EchoHub.Core/DTOs/ChatDtos.cs b/src/EchoHub.Core/DTOs/ChatDtos.cs
index 3a7e624..24bf514 100644
--- a/src/EchoHub.Core/DTOs/ChatDtos.cs
+++ b/src/EchoHub.Core/DTOs/ChatDtos.cs
@@ -15,6 +15,8 @@ public record MessageDto(
     long? AttachmentFileSize = null,
     List<EmbedDto>? Embeds = null);
 
+public record JoinChannelResult(bool Success, List<MessageDto> History, string? Error = null);
+
 public record ChannelDto(
     Guid Id,
     string Name,