From ae7ab838f450b73b30ade03a87cfdb6ff4b68bd3 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 21 Apr 2026 17:50:58 +0700
Subject: [PATCH] Don't show 406 error messages in AI.

---
 AGENTS.md                                       |  1 +
 Telegram/SourceFiles/boxes/compose_ai_box.cpp   |  4 ++++
 Telegram/SourceFiles/mtproto/mtproto_response.h | 11 +++++++++++
 3 files changed, 16 insertions(+)

diff --git a/AGENTS.md b/AGENTS.md
index 9fffd0a059..ec1650302b 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -212,6 +212,7 @@ api().request(MTPnamespace_MethodName(
   ```
 - For single constructors, use `.data()` shortcut
 - Include `.handleFloodErrors()` before `.send()` in rare cases where you want special case flood error handling
+- Silently ignore HTTP 406 errors in UI: the server uses 406 to mean "show nothing to the user". Guard toasts with `MTP::IgnoreError(error)` or use `MTP::ShowErrorFallback(show, error)` (both in `mtproto/mtproto_response.h`) which shows `error.type()` as a toast unless the error should be ignored.
 
 ## UI Styling
 
diff --git a/Telegram/SourceFiles/boxes/compose_ai_box.cpp b/Telegram/SourceFiles/boxes/compose_ai_box.cpp
index 8b20695ee0..0d51c9d322 100644
--- a/Telegram/SourceFiles/boxes/compose_ai_box.cpp
+++ b/Telegram/SourceFiles/boxes/compose_ai_box.cpp
@@ -1203,6 +1203,10 @@ void ComposeAiContent::request() {
 				return;
 			}
 			weak->_requestId = 0;
+			if (MTP::IgnoreError(error)) {
+				weak->resetState(CardState::Waiting);
+				return;
+			}
 			weak->showError(error.type());
 		});
 }
diff --git a/Telegram/SourceFiles/mtproto/mtproto_response.h b/Telegram/SourceFiles/mtproto/mtproto_response.h
index 7bd93f207e..4025f78456 100644
--- a/Telegram/SourceFiles/mtproto/mtproto_response.h
+++ b/Telegram/SourceFiles/mtproto/mtproto_response.h
@@ -57,6 +57,17 @@ inline bool IsDefaultHandledError(const Error &error) {
 	return IsTemporaryError(error);
 }
 
+inline bool IgnoreError(const Error &error) {
+	return error.code() == 406;
+}
+
+template <typename ShowPtr>
+void ShowErrorFallback(const ShowPtr &show, const Error &error) {
+	if (!IgnoreError(error)) {
+		show->showToast(error.type());
+	}
+}
+
 struct Response {
 	mtpBuffer reply;
 	mtpMsgId outerMsgId = 0;