diff --git a/DysonNetwork.Sphere/Post/AccountHelperClient.cs b/DysonNetwork.Sphere/Post/AccountHelperClient.cs
deleted file mode 100644
index e69de29..0000000
diff --git a/DysonNetwork.Sphere/Post/PostCategorySubController.cs b/DysonNetwork.Sphere/Post/PostCategorySubController.cs
new file mode 100644
index 0000000..2084370
--- /dev/null
+++ b/DysonNetwork.Sphere/Post/PostCategorySubController.cs
@@ -0,0 +1,44 @@
+using DysonNetwork.Shared.Models;
+using DysonNetwork.Shared.Proto;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace DysonNetwork.Sphere.Post;
+
+[Route(("/api/categories"))]
+[ApiController]
+public class PostCategorySubController(AppDatabase db) : ControllerBase
+{
+    /// <summary>
+    /// Get all subscriptions of categories and tags for the current user
+    /// </summary>
+    /// <returns>List of active subscription</returns>
+    [HttpGet("subscriptions")]
+    [Authorize]
+    public async Task<ActionResult<List<SnPostCategorySubscription>>> ListCategoriesSubscription(
+        [FromQuery] int offset = 0,
+        [FromQuery] int take = 20
+    )
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Unauthorized();
+        var accountId = Guid.Parse(currentUser.Id);
+
+        var pubQuery = db.PostCategorySubscriptions
+            .Include(ps => ps.Tag)
+            .Include(ps => ps.Category)
+            .Where(ps => ps.AccountId == accountId)
+            .OrderByDescending(ps => ps.CreatedAt)
+            .AsQueryable();
+
+        var totalCount = await pubQuery.CountAsync();
+        var subscriptions = await pubQuery
+            .Take(take)
+            .Skip(offset)
+            .ToListAsync();
+
+        Response.Headers["X-Total"] = totalCount.ToString();
+
+        return Ok(subscriptions);
+    }
+}
\ No newline at end of file
diff --git a/DysonNetwork.Sphere/Publisher/PublisherSubscriptionController.cs b/DysonNetwork.Sphere/Publisher/PublisherSubscriptionController.cs
index b656fc3..b1a4c19 100644
--- a/DysonNetwork.Sphere/Publisher/PublisherSubscriptionController.cs
+++ b/DysonNetwork.Sphere/Publisher/PublisherSubscriptionController.cs
@@ -115,36 +115,4 @@ public class PublisherSubscriptionController(
 
         return Ok(subscriptions);
     }
-
-    /// <summary>
-    /// Get all subscriptions of categories and tags for the current user
-    /// </summary>
-    /// <returns>List of active subscription</returns>
-    [HttpGet("subscriptions/categories")]
-    [Authorize]
-    public async Task<ActionResult<List<SnPostCategorySubscription>>> ListCategoriesSubscription(
-        [FromQuery] int offset = 0,
-        [FromQuery] int take = 20
-    )
-    {
-        if (HttpContext.Items["CurrentUser"] is not Account currentUser) return Unauthorized();
-        var accountId = Guid.Parse(currentUser.Id);
-
-        var pubQuery = db.PostCategorySubscriptions
-            .Include(ps => ps.Tag)
-            .Include(ps => ps.Category)
-            .Where(ps => ps.AccountId == accountId)
-            .OrderByDescending(ps => ps.CreatedAt)
-            .AsQueryable();
-
-        var totalCount = await pubQuery.CountAsync();
-        var subscriptions = await pubQuery
-            .Take(take)
-            .Skip(offset)
-            .ToListAsync();
-
-        Response.Headers["X-Total"] = totalCount.ToString();
-
-        return Ok(subscriptions);
-    }
 }
\ No newline at end of file