diff --git a/MareSynchronosAPI/Dto/McdfShare/McdfShareEntryDto.cs b/MareSynchronosAPI/Dto/McdfShare/McdfShareEntryDto.cs
index 1a944ab..82d4662 100644
--- a/MareSynchronosAPI/Dto/McdfShare/McdfShareEntryDto.cs
+++ b/MareSynchronosAPI/Dto/McdfShare/McdfShareEntryDto.cs
@@ -1,19 +1,21 @@
 using System;
 using System.Collections.Generic;
+using MessagePack;
 
 namespace MareSynchronos.API.Dto.McdfShare;
 
+[MessagePackObject]
 public class McdfShareEntryDto
 {
-    public Guid Id { get; set; }
-    public string Description { get; set; } = string.Empty;
-    public DateTime CreatedUtc { get; set; }
-    public DateTime? UpdatedUtc { get; set; }
-    public DateTime? ExpiresAtUtc { get; set; }
-    public bool IsOwner { get; set; }
-    public string OwnerUid { get; set; } = string.Empty;
-    public string OwnerAlias { get; set; } = string.Empty;
-    public int DownloadCount { get; set; }
-    public List<string> AllowedIndividuals { get; set; } = [];
-    public List<string> AllowedSyncshells { get; set; } = [];
+    [Key(0)] public Guid Id { get; set; }
+    [Key(1)] public string Description { get; set; } = string.Empty;
+    [Key(2)] public DateTime CreatedUtc { get; set; }
+    [Key(3)] public DateTime? UpdatedUtc { get; set; }
+    [Key(4)] public DateTime? ExpiresAtUtc { get; set; }
+    [Key(5)] public bool IsOwner { get; set; }
+    [Key(6)] public string OwnerUid { get; set; } = string.Empty;
+    [Key(7)] public string OwnerAlias { get; set; } = string.Empty;
+    [Key(8)] public int DownloadCount { get; set; }
+    [Key(9)] public List<string> AllowedIndividuals { get; set; } = [];
+    [Key(10)] public List<string> AllowedSyncshells { get; set; } = [];
 }
diff --git a/MareSynchronosAPI/Dto/McdfShare/McdfSharePayloadDto.cs b/MareSynchronosAPI/Dto/McdfShare/McdfSharePayloadDto.cs
index a829d08..0924870 100644
--- a/MareSynchronosAPI/Dto/McdfShare/McdfSharePayloadDto.cs
+++ b/MareSynchronosAPI/Dto/McdfShare/McdfSharePayloadDto.cs
@@ -1,15 +1,17 @@
 using System;
+using MessagePack;
 
 namespace MareSynchronos.API.Dto.McdfShare;
 
+[MessagePackObject]
 public class McdfSharePayloadDto
 {
-    public Guid ShareId { get; set; }
-    public string Description { get; set; } = string.Empty;
-    public byte[] CipherData { get; set; } = Array.Empty<byte>();
-    public byte[] Nonce { get; set; } = Array.Empty<byte>();
-    public byte[] Salt { get; set; } = Array.Empty<byte>();
-    public byte[] Tag { get; set; } = Array.Empty<byte>();
-    public DateTime CreatedUtc { get; set; }
-    public DateTime? ExpiresAtUtc { get; set; }
+    [Key(0)] public Guid ShareId { get; set; }
+    [Key(1)] public string Description { get; set; } = string.Empty;
+    [Key(2)] public byte[] CipherData { get; set; } = Array.Empty<byte>();
+    [Key(3)] public byte[] Nonce { get; set; } = Array.Empty<byte>();
+    [Key(4)] public byte[] Salt { get; set; } = Array.Empty<byte>();
+    [Key(5)] public byte[] Tag { get; set; } = Array.Empty<byte>();
+    [Key(6)] public DateTime CreatedUtc { get; set; }
+    [Key(7)] public DateTime? ExpiresAtUtc { get; set; }
 }
diff --git a/MareSynchronosAPI/Dto/McdfShare/McdfShareUpdateRequestDto.cs b/MareSynchronosAPI/Dto/McdfShare/McdfShareUpdateRequestDto.cs
index 2bf3645..a8bb212 100644
--- a/MareSynchronosAPI/Dto/McdfShare/McdfShareUpdateRequestDto.cs
+++ b/MareSynchronosAPI/Dto/McdfShare/McdfShareUpdateRequestDto.cs
@@ -1,13 +1,15 @@
 using System;
 using System.Collections.Generic;
+using MessagePack;
 
 namespace MareSynchronos.API.Dto.McdfShare;
 
+[MessagePackObject]
 public class McdfShareUpdateRequestDto
 {
-    public Guid ShareId { get; set; }
-    public string Description { get; set; } = string.Empty;
-    public DateTime? ExpiresAtUtc { get; set; }
-    public List<string> AllowedIndividuals { get; set; } = [];
-    public List<string> AllowedSyncshells { get; set; } = [];
+    [Key(0)] public Guid ShareId { get; set; }
+    [Key(1)] public string Description { get; set; } = string.Empty;
+    [Key(2)] public DateTime? ExpiresAtUtc { get; set; }
+    [Key(3)] public List<string> AllowedIndividuals { get; set; } = [];
+    [Key(4)] public List<string> AllowedSyncshells { get; set; } = [];
 }
diff --git a/MareSynchronosAPI/Dto/McdfShare/McdfShareUploadRequestDto.cs b/MareSynchronosAPI/Dto/McdfShare/McdfShareUploadRequestDto.cs
index 2bae493..fdf3c13 100644
--- a/MareSynchronosAPI/Dto/McdfShare/McdfShareUploadRequestDto.cs
+++ b/MareSynchronosAPI/Dto/McdfShare/McdfShareUploadRequestDto.cs
@@ -1,17 +1,19 @@
 using System;
 using System.Collections.Generic;
+using MessagePack;
 
 namespace MareSynchronos.API.Dto.McdfShare;
 
+[MessagePackObject]
 public class McdfShareUploadRequestDto
 {
-    public Guid ShareId { get; set; }
-    public string Description { get; set; } = string.Empty;
-    public byte[] CipherData { get; set; } = Array.Empty<byte>();
-    public byte[] Nonce { get; set; } = Array.Empty<byte>();
-    public byte[] Salt { get; set; } = Array.Empty<byte>();
-    public byte[] Tag { get; set; } = Array.Empty<byte>();
-    public DateTime? ExpiresAtUtc { get; set; }
-    public List<string> AllowedIndividuals { get; set; } = [];
-    public List<string> AllowedSyncshells { get; set; } = [];
+    [Key(0)] public Guid ShareId { get; set; }
+    [Key(1)] public string Description { get; set; } = string.Empty;
+    [Key(2)] public byte[] CipherData { get; set; } = Array.Empty<byte>();
+    [Key(3)] public byte[] Nonce { get; set; } = Array.Empty<byte>();
+    [Key(4)] public byte[] Salt { get; set; } = Array.Empty<byte>();
+    [Key(5)] public byte[] Tag { get; set; } = Array.Empty<byte>();
+    [Key(6)] public DateTime? ExpiresAtUtc { get; set; }
+    [Key(7)] public List<string> AllowedIndividuals { get; set; } = [];
+    [Key(8)] public List<string> AllowedSyncshells { get; set; } = [];
 }