diff --git a/PiwigoDotnet/Piwigo.Client.Tests/ImageApiTests.cs b/PiwigoDotnet/Piwigo.Client.Tests/ImageApiTests.cs
index 8641ca3..3dcb51e 100644
--- a/PiwigoDotnet/Piwigo.Client.Tests/ImageApiTests.cs
+++ b/PiwigoDotnet/Piwigo.Client.Tests/ImageApiTests.cs
@@ -15,6 +15,22 @@ public class ImageApiTests : ApiTestsBase
         _imageApi = new ImageApi(Context, new NullLogger<ImageApi>());
     }
 
+    [Test]
+    public async Task AddComment_should_pass_data_to_piwigo_and_return_new_comment()
+    {
+        SetJsonResult(@"{""stat"":""ok"",""result"":{""comment"":{""id"":2,""validation"":true}}}");
+
+        var commentId = await _imageApi.AddCommentAsync(4, "admin", "test comment", "testKey");
+
+        CorrectMethodShouldGetCalled("pwg.images.addComment");
+        CorrectParamShouldGetSent("image_id", "4");
+        CorrectParamShouldGetSent("author", "admin");
+        CorrectParamShouldGetSent("content", "test comment");
+        CorrectParamShouldGetSent("key", "testKey");
+
+        commentId.Should().Be(2);
+    }
+
     [Test]
     public async Task GetInfo_should_pass_request_and_return_data()
     {
diff --git a/PiwigoDotnet/Piwigo.Client/Contract/CommentAdded.cs b/PiwigoDotnet/Piwigo.Client/Contract/CommentAdded.cs
new file mode 100644
index 0000000..8d7c83d
--- /dev/null
+++ b/PiwigoDotnet/Piwigo.Client/Contract/CommentAdded.cs
@@ -0,0 +1,9 @@
+using Newtonsoft.Json;
+
+namespace Piwigo.Client.Contract;
+
+public record CommentAdded
+{
+    [JsonProperty("comment")]
+    public Comment Comment { get; init; } = null!;
+}
\ No newline at end of file
diff --git a/PiwigoDotnet/Piwigo.Client/IImageApi.cs b/PiwigoDotnet/Piwigo.Client/IImageApi.cs
index 86f73e1..dfbfc06 100644
--- a/PiwigoDotnet/Piwigo.Client/IImageApi.cs
+++ b/PiwigoDotnet/Piwigo.Client/IImageApi.cs
@@ -6,6 +6,7 @@ public interface IImageApi
 {
     Task<ImageUploaded> AddAsync(ImageUpload imageUpload, CancellationToken cancellationToken = default);
     Task<ImageUploaded> UpdateAsync(int imageId, ImageUpload imageUpload, CancellationToken cancellationToken = default);
+    Task<int> AddCommentAsync(int imageId, string? author, string content, string key, CancellationToken cancellationToken = default);
     Task AddChunkAsync(byte[] data, string originalSum, int position, CancellationToken cancellationToken = default);
     Task<bool> ReadyForUploadAsync(CancellationToken cancellationToken = default);
     Task<Image> GetInfoAsync(int imageId, int? commentsPage, int? commentsPerPage, CancellationToken cancellationToken = default);
@@ -14,7 +15,6 @@ public interface IImageApi
         CancellationToken cancellationToken = default);
 
     /*
-addComment
 checkFiles
 delete
 deleteOrphans
diff --git a/PiwigoDotnet/Piwigo.Client/ImageApi.cs b/PiwigoDotnet/Piwigo.Client/ImageApi.cs
index 0131e46..900b1cc 100644
--- a/PiwigoDotnet/Piwigo.Client/ImageApi.cs
+++ b/PiwigoDotnet/Piwigo.Client/ImageApi.cs
@@ -18,6 +18,21 @@ public class ImageApi : IImageApi
         _logger = logger ?? throw new ArgumentNullException(nameof(logger));
     }
 
+    public async Task<int> AddCommentAsync(int imageId, string? author, string content, string key, CancellationToken cancellationToken = default)
+    {
+        var formParams = new Dictionary<string, string>
+        {
+            { "image_id", imageId.ToString() },
+            { "content", content },
+            { "key", key }
+        };
+        formParams.AddIfValueNotNull("author", author);
+        
+        var response = await _context.PostAsync<PiwigoResponse<CommentAdded>>(_logger, "pwg.images.addComment", formParams, cancellationToken);
+
+        return response.Result.Comment.Id;
+    }
+
     public async Task AddChunkAsync(byte[] data, string originalSum, int position, CancellationToken cancellationToken = default)
     {
         var base64Data = Convert.ToBase64String(data);