diff --git a/API/Controllers/MangaController.cs b/API/Controllers/MangaController.cs
index c45e374..100c02e 100644
--- a/API/Controllers/MangaController.cs
+++ b/API/Controllers/MangaController.cs
@@ -1,9 +1,7 @@
-using API.APIEndpointRecords;
-using API.Schema;
+using API.Schema;
 using API.Schema.Jobs;
 using Asp.Versioning;
 using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.ModelBinding;
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Formats.Jpeg;
 using SixLabors.ImageSharp.Processing;
diff --git a/API/Controllers/QueryController.cs b/API/Controllers/QueryController.cs
index b881fa1..3a4fb05 100644
--- a/API/Controllers/QueryController.cs
+++ b/API/Controllers/QueryController.cs
@@ -10,6 +10,12 @@ namespace API.Controllers;
 [Route("v{v:apiVersion}/[controller]")]
 public class QueryController(PgsqlContext context) : Controller
 {
+    /// <summary>
+    /// Returns the Author-Information for Author-ID
+    /// </summary>
+    /// <param name="AuthorId">Author-Id</param>
+    /// <response code="200"></response>
+    /// <response code="404">Author with ID not found</response>
     [HttpGet("Author/{AuthorId}")]
     [ProducesResponseType<Author>(Status200OK, "application/json")]
     [ProducesResponseType(Status404NotFound)]
@@ -21,6 +27,11 @@ public class QueryController(PgsqlContext context) : Controller
         return Ok(ret);
     }
     
+    /// <summary>
+    /// Returns all Mangas which where Authored by Author with AuthorId
+    /// </summary>
+    /// <param name="AuthorId">Author-ID</param>
+    /// <response code="200"></response>
     [HttpGet("Mangas/WithAuthorId/{AuthorId}")]
     [ProducesResponseType<Manga[]>(Status200OK, "application/json")]
     public IActionResult GetMangaWithAuthorIds(string AuthorId)
@@ -28,6 +39,12 @@ public class QueryController(PgsqlContext context) : Controller
         return Ok(context.Manga.Where(m => m.AuthorIds.Contains(AuthorId)));
     }
     
+    /// <summary>
+    /// Returns Link-Information for Link-Id
+    /// </summary>
+    /// <param name="LinkId"></param>
+    /// <response code="200"></response>
+    /// <response code="404">Link with ID not found</response>
     [HttpGet("Link/{LinkId}")]
     [ProducesResponseType<Link>(Status200OK, "application/json")]
     [ProducesResponseType(Status404NotFound)]
@@ -39,14 +56,12 @@ public class QueryController(PgsqlContext context) : Controller
         return Ok(ret);
     }
     
-    [HttpGet("Links/WithIds")]
-    [ProducesResponseType<Link[]>(Status200OK, "application/json")]
-    public IActionResult GetLink([FromBody]string[] LinkIds)
-    {
-        Link[] ret = context.Link.Where(l => LinkIds.Contains(l.LinkId)).ToArray();
-        return Ok(ret);
-    }
-    
+    /// <summary>
+    /// Returns AltTitle-Information for AltTitle-Id
+    /// </summary>
+    /// <param name="AltTitleId"></param>
+    /// <response code="200"></response>
+    /// <response code="404">AltTitle with ID not found</response>
     [HttpGet("AltTitle/{AltTitleId}")]
     [ProducesResponseType<MangaAltTitle>(Status200OK, "application/json")]
     [ProducesResponseType(Status404NotFound)]
@@ -58,18 +73,31 @@ public class QueryController(PgsqlContext context) : Controller
         return Ok(ret);
     }
     
-    [HttpGet("AltTitles/WithIds")]
-    [ProducesResponseType<MangaAltTitle[]>(Status200OK, "application/json")]
-    public IActionResult GetAltTitle([FromBody]string[] AltTitleIds)
-    {
-        MangaAltTitle[] ret = context.AltTitles.Where(a => AltTitleIds.Contains(a.AltTitleId)).ToArray();
-        return Ok(ret);
-    }
-    
+    /// <summary>
+    /// Returns all Manga with Tag
+    /// </summary>
+    /// <param name="Tag"></param>
+    /// <response code="200"></response>
     [HttpGet("Mangas/WithTag/{Tag}")]
     [ProducesResponseType<Manga[]>(Status200OK, "application/json")]
     public IActionResult GetMangasWithTag(string Tag)
     {
         return Ok(context.Manga.Where(m => m.Tags.Contains(Tag)));
     }
+    
+    /// <summary>
+    /// Returns Chapter-Information for Chapter-Id
+    /// </summary>
+    /// <param name="ChapterId"></param>
+    /// <response code="200"></response>
+    /// <response code="404">Chapter with ID not found</response>
+    [HttpGet("Chapter/{ChapterId}")]
+    [ProducesResponseType<Chapter>(Status200OK, "application/json")]
+    public IActionResult GetChapter(string ChapterId)
+    {
+        Chapter? ret = context.Chapters.Find(ChapterId);
+        if (ret is null)
+            return NotFound();
+        return Ok(ret);
+    }
 }
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