diff --git a/AobaCore/Extensions.cs b/AobaCore/Extensions.cs
index 691cb35..e05b947 100644
--- a/AobaCore/Extensions.cs
+++ b/AobaCore/Extensions.cs
@@ -1,4 +1,7 @@
 global using MaybeError;
+
+using AobaCore.Services;
+
 using Microsoft.Extensions.DependencyInjection;
 
 using MongoDB.Driver;
diff --git a/AobaCore/Models/MeidaThumbnail.cs b/AobaCore/Models/MeidaThumbnail.cs
new file mode 100644
index 0000000..b7ea5ca
--- /dev/null
+++ b/AobaCore/Models/MeidaThumbnail.cs
@@ -0,0 +1,5 @@
+namespace AobaCore.Models;
+
+internal class MeidaThumbnail
+{
+}
\ No newline at end of file
diff --git a/AobaCore/AccountsService.cs b/AobaCore/Services/AccountsService.cs
similarity index 98%
rename from AobaCore/AccountsService.cs
rename to AobaCore/Services/AccountsService.cs
index 2386321..354c5d3 100644
--- a/AobaCore/AccountsService.cs
+++ b/AobaCore/Services/AccountsService.cs
@@ -12,7 +12,7 @@ using System.Security.Cryptography;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace AobaCore;
+namespace AobaCore.Services;
 public class AccountsService(IMongoDatabase db)
 {
 	public readonly IMongoCollection<User> _users = db.GetCollection<User>("users");
diff --git a/AobaCore/AobaIndexCreationService.cs b/AobaCore/Services/AobaIndexCreationService.cs
similarity index 95%
rename from AobaCore/AobaIndexCreationService.cs
rename to AobaCore/Services/AobaIndexCreationService.cs
index 7412a39..0e8360e 100644
--- a/AobaCore/AobaIndexCreationService.cs
+++ b/AobaCore/Services/AobaIndexCreationService.cs
@@ -4,7 +4,7 @@ using Microsoft.Extensions.Hosting;
 
 using MongoDB.Driver;
 
-namespace AobaCore;
+namespace AobaCore.Services;
 
 public class AobaIndexCreationService(IMongoDatabase db): BackgroundService
 {
diff --git a/AobaCore/AobaService.cs b/AobaCore/Services/AobaService.cs
similarity index 98%
rename from AobaCore/AobaService.cs
rename to AobaCore/Services/AobaService.cs
index e7869ea..918db8a 100644
--- a/AobaCore/AobaService.cs
+++ b/AobaCore/Services/AobaService.cs
@@ -6,7 +6,7 @@ using MongoDB.Bson;
 using MongoDB.Driver;
 using MongoDB.Driver.GridFS;
 
-namespace AobaCore;
+namespace AobaCore.Services;
 
 public class AobaService(IMongoDatabase db)
 {
diff --git a/AobaCore/Services/ThumbnailService.cs b/AobaCore/Services/ThumbnailService.cs
new file mode 100644
index 0000000..d97ecdf
--- /dev/null
+++ b/AobaCore/Services/ThumbnailService.cs
@@ -0,0 +1,28 @@
+using AobaCore.Models;
+
+using MongoDB.Bson;
+using MongoDB.Driver;
+using MongoDB.Driver.GridFS;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AobaCore.Services;
+internal class ThumbnailService(IMongoDatabase db, AobaService aobaService)
+{
+	private readonly GridFSBucket _gridfs = new GridFSBucket(db);
+	private readonly IMongoCollection<MeidaThumbnail> _thumbnails = db.GetCollection<MeidaThumbnail>("thumbs");
+
+	public async Task<MemoryStream> GetThumbnailAsync(ObjectId id)
+	{
+
+	}
+
+	public async Task GenerateThumbnailAsync(ObjectId id)
+	{
+
+	}
+}
diff --git a/AobaServer/Controllers/Api/MediaApi.cs b/AobaServer/Controllers/Api/MediaApi.cs
index 8c60738..3977c99 100644
--- a/AobaServer/Controllers/Api/MediaApi.cs
+++ b/AobaServer/Controllers/Api/MediaApi.cs
@@ -1,5 +1,5 @@
-using AobaCore;
-using AobaCore.Models;
+using AobaCore.Models;
+using AobaCore.Services;
 
 using AobaServer.Utils;
 
diff --git a/AobaServer/Controllers/AuthController.cs b/AobaServer/Controllers/AuthController.cs
index f69414a..41cf584 100644
--- a/AobaServer/Controllers/AuthController.cs
+++ b/AobaServer/Controllers/AuthController.cs
@@ -1,4 +1,4 @@
-using AobaCore;
+using AobaCore.Services;
 
 using AobaServer.Models;
 using AobaServer.Utils;
diff --git a/AobaServer/Controllers/MediaController.cs b/AobaServer/Controllers/MediaController.cs
index 4878bb1..b08c406 100644
--- a/AobaServer/Controllers/MediaController.cs
+++ b/AobaServer/Controllers/MediaController.cs
@@ -1,4 +1,4 @@
-using AobaCore;
+using AobaCore.Services;
 
 using HeyRed.Mime;
 
diff --git a/AobaServer/Services/AobaAuthService.cs b/AobaServer/Services/AobaAuthService.cs
index fc90c08..5ab9b23 100644
--- a/AobaServer/Services/AobaAuthService.cs
+++ b/AobaServer/Services/AobaAuthService.cs
@@ -1,7 +1,7 @@
 using Aoba.RPC.Auth;
 
-using AobaCore;
 using AobaCore.Models;
+using AobaCore.Services;
 
 using AobaServer.Models;
 using AobaServer.Utils;
diff --git a/AobaServer/Services/AobaRpcService.cs b/AobaServer/Services/AobaRpcService.cs
index 607d7c4..433ef54 100644
--- a/AobaServer/Services/AobaRpcService.cs
+++ b/AobaServer/Services/AobaRpcService.cs
@@ -1,6 +1,6 @@
 using Aoba.RPC;
 
-using AobaCore;
+using AobaCore.Services;
 
 using AobaServer.Models;
 using AobaServer.Utils;