diff --git a/osu.Game/Online/API/Requests/ChatAckRequest.cs b/osu.Game/Online/API/Requests/ChatAckRequest.cs
new file mode 100644
index 0000000000..f09df4908e
--- /dev/null
+++ b/osu.Game/Online/API/Requests/ChatAckRequest.cs
@@ -0,0 +1,21 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Net.Http;
+using osu.Framework.IO.Network;
+using osu.Game.Online.API.Requests.Responses;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class ChatAckRequest : APIRequest<ChatAckResponse>
+    {
+        protected override WebRequest CreateWebRequest()
+        {
+            var req = base.CreateWebRequest();
+            req.Method = HttpMethod.Post;
+            return req;
+        }
+
+        protected override string Target => "chat/ack";
+    }
+}
diff --git a/osu.Game/Online/API/Requests/GetNotificationsRequest.cs b/osu.Game/Online/API/Requests/GetNotificationsRequest.cs
new file mode 100644
index 0000000000..e419807a85
--- /dev/null
+++ b/osu.Game/Online/API/Requests/GetNotificationsRequest.cs
@@ -0,0 +1,12 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Online.API.Requests.Responses;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class GetNotificationsRequest : APIRequest<APINotificationsBundle>
+    {
+        protected override string Target => "notifications";
+    }
+}
diff --git a/osu.Game/Online/API/Requests/Responses/APINotification.cs b/osu.Game/Online/API/Requests/Responses/APINotification.cs
new file mode 100644
index 0000000000..e1f0fa7221
--- /dev/null
+++ b/osu.Game/Online/API/Requests/Responses/APINotification.cs
@@ -0,0 +1,37 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    [JsonObject(MemberSerialization.OptIn)]
+    public class APINotification
+    {
+        [JsonProperty("id")]
+        public long Id { get; set; }
+
+        [JsonProperty("name")]
+        public string Name { get; set; } = null!;
+
+        [JsonProperty("created_at")]
+        public DateTimeOffset? CreatedAt { get; set; }
+
+        [JsonProperty("object_type")]
+        public string ObjectType { get; set; } = null!;
+
+        [JsonProperty("object_id")]
+        public string ObjectId { get; set; } = null!;
+
+        [JsonProperty("source_user_id")]
+        public long? SourceUserId { get; set; }
+
+        [JsonProperty("is_read")]
+        public bool IsRead { get; set; }
+
+        [JsonProperty("details")]
+        public Dictionary<string, string>? Details { get; set; }
+    }
+}
diff --git a/osu.Game/Online/API/Requests/Responses/APINotificationsBundle.cs b/osu.Game/Online/API/Requests/Responses/APINotificationsBundle.cs
new file mode 100644
index 0000000000..067f1066b3
--- /dev/null
+++ b/osu.Game/Online/API/Requests/Responses/APINotificationsBundle.cs
@@ -0,0 +1,20 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using Newtonsoft.Json;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    [JsonObject(MemberSerialization.OptIn)]
+    public class APINotificationsBundle
+    {
+        [JsonProperty("has_more")]
+        public bool HasMore { get; set; }
+
+        [JsonProperty("notifications")]
+        public APINotification[] Notifications { get; set; } = null!;
+
+        [JsonProperty("notification_endpoint")]
+        public string Endpoint { get; set; } = null!;
+    }
+}
diff --git a/osu.Game/Online/API/Requests/Responses/ChatAckResponse.cs b/osu.Game/Online/API/Requests/Responses/ChatAckResponse.cs
new file mode 100644
index 0000000000..6ed22a19b2
--- /dev/null
+++ b/osu.Game/Online/API/Requests/Responses/ChatAckResponse.cs
@@ -0,0 +1,15 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    [JsonObject(MemberSerialization.OptIn)]
+    public class ChatAckResponse
+    {
+        [JsonProperty("silences")]
+        public List<ChatSilence> Silences { get; set; } = null!;
+    }
+}
diff --git a/osu.Game/Online/API/Requests/Responses/ChatSilence.cs b/osu.Game/Online/API/Requests/Responses/ChatSilence.cs
new file mode 100644
index 0000000000..45fd6e1ba3
--- /dev/null
+++ b/osu.Game/Online/API/Requests/Responses/ChatSilence.cs
@@ -0,0 +1,17 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using Newtonsoft.Json;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    [JsonObject(MemberSerialization.OptIn)]
+    public class ChatSilence
+    {
+        [JsonProperty("id")]
+        public uint Id { get; set; }
+
+        [JsonProperty("user_id")]
+        public uint UserId { get; set; }
+    }
+}