diff --git a/Foxnouns.Backend/Services/MemberRendererService.cs b/Foxnouns.Backend/Services/MemberRendererService.cs
index ef7b923..625e8b8 100644
--- a/Foxnouns.Backend/Services/MemberRendererService.cs
+++ b/Foxnouns.Backend/Services/MemberRendererService.cs
@@ -29,15 +29,15 @@ public class MemberRendererService(DatabaseContext db, Config config)
         var renderUnlisted = token?.UserId == member.UserId && token.HasScope("user.read_hidden");
 
         return new MemberResponse(
-            member.Id, member.Name, member.DisplayName, member.Bio,
+            member.Id, member.Sid, member.Name, member.DisplayName, member.Bio,
             AvatarUrlFor(member), member.Links, member.Names, member.Pronouns, member.Fields,
             RenderPartialUser(member.User), renderUnlisted ? member.Unlisted : null);
     }
 
     private UserRendererService.PartialUser RenderPartialUser(User user) =>
-        new(user.Id, user.Username, user.DisplayName, AvatarUrlFor(user), user.CustomPreferences);
+        new(user.Id, user.Sid, user.Username, user.DisplayName, AvatarUrlFor(user), user.CustomPreferences);
 
-    public PartialMember RenderPartialMember(Member member, bool renderUnlisted = false) => new(member.Id, member.Name,
+    public PartialMember RenderPartialMember(Member member, bool renderUnlisted = false) => new(member.Id, member.Sid, member.Name,
         member.DisplayName, member.Bio, AvatarUrlFor(member), member.Names, member.Pronouns,
         renderUnlisted ? member.Unlisted : null);
 
@@ -49,6 +49,7 @@ public class MemberRendererService(DatabaseContext db, Config config)
 
     public record PartialMember(
         Snowflake Id,
+        string Sid,
         string Name,
         string? DisplayName,
         string? Bio,
@@ -60,6 +61,7 @@ public class MemberRendererService(DatabaseContext db, Config config)
 
     public record MemberResponse(
         Snowflake Id,
+        string Sid,
         string Name,
         string? DisplayName,
         string? Bio,
diff --git a/Foxnouns.Backend/Services/UserRendererService.cs b/Foxnouns.Backend/Services/UserRendererService.cs
index dd266fa..5a62a1a 100644
--- a/Foxnouns.Backend/Services/UserRendererService.cs
+++ b/Foxnouns.Backend/Services/UserRendererService.cs
@@ -37,7 +37,7 @@ public class UserRendererService(DatabaseContext db, MemberRendererService membe
             : [];
 
         return new UserResponse(
-            user.Id, user.Username, user.DisplayName, user.Bio, user.MemberTitle, AvatarUrlFor(user), user.Links,
+            user.Id, user.Sid, user.Username, user.DisplayName, user.Bio, user.MemberTitle, AvatarUrlFor(user), user.Links,
             user.Names, user.Pronouns, user.Fields, user.CustomPreferences,
             renderMembers ? members.Select(m => memberRenderer.RenderPartialMember(m, tokenHidden)) : null,
             renderAuthMethods
@@ -52,13 +52,14 @@ public class UserRendererService(DatabaseContext db, MemberRendererService membe
     }
 
     public PartialUser RenderPartialUser(User user) =>
-        new(user.Id, user.Username, user.DisplayName, AvatarUrlFor(user), user.CustomPreferences);
+        new(user.Id, user.Sid, user.Username, user.DisplayName, AvatarUrlFor(user), user.CustomPreferences);
 
     private string? AvatarUrlFor(User user) =>
         user.Avatar != null ? $"{config.MediaBaseUrl}/users/{user.Id}/avatars/{user.Avatar}.webp" : null;
 
     public record UserResponse(
         Snowflake Id,
+        string Sid,
         string Username,
         string? DisplayName,
         string? Bio,
@@ -92,6 +93,7 @@ public class UserRendererService(DatabaseContext db, MemberRendererService membe
 
     public record PartialUser(
         Snowflake Id,
+        string Sid,
         string Username,
         string? DisplayName,
         string? AvatarUrl,