diff --git a/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetContentController.cs b/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetContentController.cs
index fb2f3128a..f8089380b 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetContentController.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetContentController.cs
@@ -61,7 +61,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         /// <param name="app">The name of the app.</param>
         /// <param name="idOrSlug">The id or slug of the asset.</param>
         /// <param name="more">Optional suffix that can be used to seo-optimize the link to the image Has not effect.</param>
-        /// <param name="queries">The query string parameters.</param>
+        /// <param name="request">The request parameters.</param>
         /// <returns>
         /// 200 => Asset found and content or (resized) image returned.
         /// 404 => Asset or app not found.
@@ -72,7 +72,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         [ApiPermission]
         [ApiCosts(0.5)]
         [AllowAnonymous]
-        public async Task<IActionResult> GetAssetContentBySlug(string app, string idOrSlug, [FromQuery] AssetContentQueryDto queries, string? more = null)
+        public async Task<IActionResult> GetAssetContentBySlug(string app, string idOrSlug, AssetContentQueryDto request, string? more = null)
         {
             var requestContext = Context.Clone(b => b.WithoutAssetEnrichment());
 
@@ -83,14 +83,14 @@ namespace Squidex.Areas.Api.Controllers.Assets
                 asset = await assetQuery.FindBySlugAsync(requestContext, idOrSlug);
             }
 
-            return await DeliverAssetAsync(requestContext, asset, queries);
+            return await DeliverAssetAsync(requestContext, asset, request);
         }
 
         /// <summary>
         /// Get the asset content.
         /// </summary>
         /// <param name="id">The id of the asset.</param>
-        /// <param name="queries">The query string parameters.</param>
+        /// <param name="request">The request parameters.</param>
         /// <returns>
         /// 200 => Asset found and content or (resized) image returned.
         /// 404 => Asset or app not found.
@@ -102,18 +102,18 @@ namespace Squidex.Areas.Api.Controllers.Assets
         [ApiCosts(0.5)]
         [AllowAnonymous]
         [Obsolete("Use overload with app name")]
-        public async Task<IActionResult> GetAssetContent(DomainId id, [FromQuery] AssetContentQueryDto queries)
+        public async Task<IActionResult> GetAssetContent(DomainId id, AssetContentQueryDto request)
         {
             var requestContext = Context.Clone(b => b.WithoutAssetEnrichment());
 
             var asset = await assetQuery.FindGlobalAsync(requestContext, id);
 
-            return await DeliverAssetAsync(requestContext, asset, queries);
+            return await DeliverAssetAsync(requestContext, asset, request);
         }
 
-        private async Task<IActionResult> DeliverAssetAsync(Context context, IAssetEntity? asset, AssetContentQueryDto queries)
+        private async Task<IActionResult> DeliverAssetAsync(Context context, IAssetEntity? asset, AssetContentQueryDto request)
         {
-            queries ??= new AssetContentQueryDto();
+            request ??= new AssetContentQueryDto();
 
             if (asset == null)
             {
@@ -127,16 +127,16 @@ namespace Squidex.Areas.Api.Controllers.Assets
                 return StatusCode(403);
             }
 
-            if (asset != null && queries.Version > EtagVersion.Any && asset.Version != queries.Version)
+            if (asset != null && request.Version > EtagVersion.Any && asset.Version != request.Version)
             {
                 if (context.App != null)
                 {
-                    asset = await assetQuery.FindAsync(context, asset.Id, queries.Version);
+                    asset = await assetQuery.FindAsync(context, asset.Id, request.Version);
                 }
                 else
                 {
                     // Fallback for old endpoint. Does not set the surrogate key.
-                    asset = await assetLoader.GetAsync(asset.AppId.Id, asset.Id, queries.Version);
+                    asset = await assetLoader.GetAsync(asset.AppId.Id, asset.Id, request.Version);
                 }
             }
 
@@ -145,15 +145,15 @@ namespace Squidex.Areas.Api.Controllers.Assets
                 return NotFound();
             }
 
-            var resizeOptions = queries.ToResizeOptions(asset);
+            var resizeOptions = request.ToResizeOptions(asset);
 
             FileCallback callback;
 
             Response.Headers[HeaderNames.ETag] = asset.FileVersion.ToString();
 
-            if (queries.CacheDuration > 0)
+            if (request.CacheDuration > 0)
             {
-                Response.Headers[HeaderNames.CacheControl] = $"public,max-age={queries.CacheDuration}";
+                Response.Headers[HeaderNames.CacheControl] = $"public,max-age={request.CacheDuration}";
             }
 
             var contentLength = (long?)null;
@@ -164,7 +164,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
                 {
                     var resizedAsset = $"{asset.AppId.Id}_{asset.Id}_{asset.FileVersion}_{resizeOptions}";
 
-                    if (queries.ForceResize)
+                    if (request.ForceResize)
                     {
                         await ResizeAsync(asset, bodyStream, resizedAsset, resizeOptions, true, ct);
                     }
@@ -198,7 +198,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
                 FileDownloadName = asset.FileName,
                 FileSize = contentLength,
                 LastModified = asset.LastModified.ToDateTimeOffset(),
-                SendInline = queries.Download != 1
+                SendInline = request.Download != 1
             };
         }
 
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetFoldersController.cs b/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetFoldersController.cs
index d2946bd01..b477f991a 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetFoldersController.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetFoldersController.cs
@@ -68,7 +68,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         }
 
         /// <summary>
-        /// Upload a new asset.
+        /// Create an asset folder.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="request">The asset folder object that needs to be added to the App.</param>
@@ -79,7 +79,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         /// </returns>
         [HttpPost]
         [Route("apps/{app}/assets/folders", Order = -1)]
-        [ProducesResponseType(typeof(AssetDto), 201)]
+        [ProducesResponseType(typeof(AssetFolderDto), 201)]
         [AssetRequestSizeLimit]
         [ApiPermissionOrAnonymous(Permissions.AppAssetsUpdate)]
         [ApiCosts(1)]
@@ -93,7 +93,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         }
 
         /// <summary>
-        /// Updates the asset folder.
+        /// Update an asset folder.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="id">The id of the asset folder.</param>
@@ -105,7 +105,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         /// </returns>
         [HttpPut]
         [Route("apps/{app}/assets/folders/{id}/", Order = -1)]
-        [ProducesResponseType(typeof(AssetDto), StatusCodes.Status200OK)]
+        [ProducesResponseType(typeof(AssetFolderDto), StatusCodes.Status200OK)]
         [AssetRequestSizeLimit]
         [ApiPermissionOrAnonymous(Permissions.AppAssetsUpdate)]
         [ApiCosts(1)]
@@ -119,7 +119,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         }
 
         /// <summary>
-        /// Moves the asset folder.
+        /// Move an asset folder.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="id">The id of the asset folder.</param>
@@ -131,7 +131,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         /// </returns>
         [HttpPut]
         [Route("apps/{app}/assets/folders/{id}/parent", Order = -1)]
-        [ProducesResponseType(typeof(AssetDto), StatusCodes.Status200OK)]
+        [ProducesResponseType(typeof(AssetFolderDto), StatusCodes.Status200OK)]
         [AssetRequestSizeLimit]
         [ApiPermissionOrAnonymous(Permissions.AppAssetsUpdate)]
         [ApiCosts(1)]
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetsController.cs b/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetsController.cs
index eb0385bd4..13f9e978d 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetsController.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Assets/AssetsController.cs
@@ -172,10 +172,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         /// Upload a new asset.
         /// </summary>
         /// <param name="app">The name of the app.</param>
-        /// <param name="parentId">The optional parent folder id.</param>
-        /// <param name="file">The file to upload.</param>
-        /// <param name="id">The optional custom asset id.</param>
-        /// <param name="duplicate">True to duplicate the asset, event if the file has been uploaded.</param>
+        /// <param name="request">The request parameters.</param>
         /// <returns>
         /// 201 => Asset created.
         /// 400 => Asset request not valid.
@@ -191,16 +188,9 @@ namespace Squidex.Areas.Api.Controllers.Assets
         [AssetRequestSizeLimit]
         [ApiPermissionOrAnonymous(Permissions.AppAssetsCreate)]
         [ApiCosts(1)]
-        public async Task<IActionResult> PostAsset(string app, [FromQuery] DomainId parentId, IFormFile file, [FromQuery] DomainId? id = null, [FromQuery] bool duplicate = false)
+        public async Task<IActionResult> PostAsset(string app, CreateAssetDto request)
         {
-            var assetFile = await CheckAssetFileAsync(file);
-
-            var command = new CreateAsset { File = assetFile, ParentId = parentId, Duplicate = duplicate };
-
-            if (id != null && id.Value != default && !string.IsNullOrWhiteSpace(id.Value.ToString()))
-            {
-                command.AssetId = id.Value;
-            }
+            var command = request.ToCommand(await CheckAssetFileAsync(request.File));
 
             var response = await InvokeCommandAsync(command);
 
@@ -238,9 +228,8 @@ namespace Squidex.Areas.Api.Controllers.Assets
         /// Upsert an asset.
         /// </summary>
         /// <param name="app">The name of the app.</param>
-        /// <param name="parentId">The optional parent folder id.</param>
-        /// <param name="file">The file to upload.</param>
         /// <param name="id">The optional custom asset id.</param>
+        /// <param name="request">The request parameters.</param>
         /// <returns>
         /// 200 => Asset created or updated.
         /// 400 => Asset request not valid.
@@ -256,11 +245,9 @@ namespace Squidex.Areas.Api.Controllers.Assets
         [AssetRequestSizeLimit]
         [ApiPermissionOrAnonymous(Permissions.AppAssetsCreate)]
         [ApiCosts(1)]
-        public async Task<IActionResult> PostUpsertAsset(string app, DomainId id, [FromQuery] DomainId? parentId, IFormFile file)
+        public async Task<IActionResult> PostUpsertAsset(string app, DomainId id, UpsertAssetDto request)
         {
-            var assetFile = await CheckAssetFileAsync(file);
-
-            var command = new UpsertAsset { File = assetFile, ParentId = parentId, AssetId = id };
+            var command = request.ToCommand(id, await CheckAssetFileAsync(request.File));
 
             var response = await InvokeCommandAsync(command);
 
@@ -289,9 +276,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         [ApiCosts(1)]
         public async Task<IActionResult> PutAssetContent(string app, DomainId id, IFormFile file)
         {
-            var assetFile = await CheckAssetFileAsync(file);
-
-            var command = new UpdateAsset { File = assetFile, AssetId = id };
+            var command = new UpdateAsset { File = await CheckAssetFileAsync(file), AssetId = id };
 
             var response = await InvokeCommandAsync(command);
 
@@ -299,7 +284,7 @@ namespace Squidex.Areas.Api.Controllers.Assets
         }
 
         /// <summary>
-        /// Updates the asset.
+        /// Update an asset.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="id">The id of the asset.</param>
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Assets/Models/CreateAssetDto.cs b/backend/src/Squidex/Areas/Api/Controllers/Assets/Models/CreateAssetDto.cs
new file mode 100644
index 000000000..987dff51a
--- /dev/null
+++ b/backend/src/Squidex/Areas/Api/Controllers/Assets/Models/CreateAssetDto.cs
@@ -0,0 +1,60 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Squidex.Assets;
+using Squidex.Domain.Apps.Entities.Assets.Commands;
+using Squidex.Infrastructure;
+using Squidex.Infrastructure.Reflection;
+
+namespace Squidex.Areas.Api.Controllers.Assets.Models
+{
+    public sealed class CreateAssetDto
+    {
+        /// <summary>
+        /// The file to upload.
+        /// </summary>
+        public IFormFile File { get; set; }
+
+        /// <summary>
+        /// The optional parent folder id.
+        /// </summary>
+        [FromQuery]
+        public DomainId ParentId { get; set; }
+
+        /// <summary>
+        /// The optional path to the parent folder.
+        /// </summary>
+        [FromQuery]
+        public string? ParentPath { get; set; }
+
+        /// <summary>
+        /// The optional custom asset id.
+        /// </summary>
+        [FromQuery]
+        public DomainId? Id { get; set; }
+
+        /// <summary>
+        /// True to duplicate the asset, event if the file has been uploaded.
+        /// </summary>
+        [FromQuery]
+        public bool Duplicate { get; set; }
+
+        public CreateAsset ToCommand(AssetFile file)
+        {
+            var command = SimpleMapper.Map(this, new CreateAsset { File = file });
+
+            if (Id != null && Id.Value != default && !string.IsNullOrWhiteSpace(Id.Value.ToString()))
+            {
+                command.AssetId = Id.Value;
+            }
+
+            return command;
+        }
+    }
+}
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Assets/Models/UpsertAssetDto.cs b/backend/src/Squidex/Areas/Api/Controllers/Assets/Models/UpsertAssetDto.cs
new file mode 100644
index 000000000..b737bb04a
--- /dev/null
+++ b/backend/src/Squidex/Areas/Api/Controllers/Assets/Models/UpsertAssetDto.cs
@@ -0,0 +1,47 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Squidex.Assets;
+using Squidex.Domain.Apps.Entities.Assets.Commands;
+using Squidex.Infrastructure;
+using Squidex.Infrastructure.Reflection;
+
+namespace Squidex.Areas.Api.Controllers.Assets.Models
+{
+    public sealed class UpsertAssetDto
+    {
+        /// <summary>
+        /// The file to upload.
+        /// </summary>
+        public IFormFile File { get; set; }
+
+        /// <summary>
+        /// The optional parent folder id.
+        /// </summary>
+        [FromQuery]
+        public DomainId ParentId { get; set; }
+
+        /// <summary>
+        /// The optional path to the parent folder.
+        /// </summary>
+        [FromQuery]
+        public string? ParentPath { get; set; }
+
+        /// <summary>
+        /// True to duplicate the asset, event if the file has been uploaded.
+        /// </summary>
+        [FromQuery]
+        public bool Duplicate { get; set; }
+
+        public UpsertAsset ToCommand(DomainId id, AssetFile file)
+        {
+            return SimpleMapper.Map(this, new UpsertAsset { File = file, AssetId = id });
+        }
+    }
+}
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Comments/CommentsController.cs b/backend/src/Squidex/Areas/Api/Controllers/Comments/CommentsController.cs
index f3f71616b..7cf6909a3 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Comments/CommentsController.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Comments/CommentsController.cs
@@ -93,7 +93,7 @@ namespace Squidex.Areas.Api.Controllers.Comments
         }
 
         /// <summary>
-        /// Updates the comment.
+        /// Update a comment.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="commentsId">The id of the comments.</param>
@@ -118,7 +118,7 @@ namespace Squidex.Areas.Api.Controllers.Comments
         }
 
         /// <summary>
-        /// Deletes the comment.
+        /// Delete a comment.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="commentsId">The id of the comments.</param>
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Comments/Notifications/UserNotificationsController.cs b/backend/src/Squidex/Areas/Api/Controllers/Comments/Notifications/UserNotificationsController.cs
index 6244c397b..d91202abb 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Comments/Notifications/UserNotificationsController.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Comments/Notifications/UserNotificationsController.cs
@@ -67,7 +67,7 @@ namespace Squidex.Areas.Api.Controllers.Comments.Notifications
         }
 
         /// <summary>
-        /// Deletes the notification.
+        /// Delete a notification.
         /// </summary>
         /// <param name="userId">The user id.</param>
         /// <param name="commentId">The id of the comment.</param>
diff --git a/backend/src/Squidex/Areas/Api/Controllers/Schemas/SchemaFieldsController.cs b/backend/src/Squidex/Areas/Api/Controllers/Schemas/SchemaFieldsController.cs
index 33cceda86..59e3c5e0e 100644
--- a/backend/src/Squidex/Areas/Api/Controllers/Schemas/SchemaFieldsController.cs
+++ b/backend/src/Squidex/Areas/Api/Controllers/Schemas/SchemaFieldsController.cs
@@ -107,7 +107,7 @@ namespace Squidex.Areas.Api.Controllers.Schemas
         }
 
         /// <summary>
-        /// Reorders the fields.
+        /// Reorder all fields.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="name">The name of the schema.</param>
@@ -132,7 +132,7 @@ namespace Squidex.Areas.Api.Controllers.Schemas
         }
 
         /// <summary>
-        /// Reorders the nested fields.
+        /// Reorder all nested fields.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <param name="name">The name of the schema.</param>