diff --git a/lib/alerts/telegram.mjs b/lib/alerts/telegram.mjs
index 45e902f..4c3ac3a 100644
--- a/lib/alerts/telegram.mjs
+++ b/lib/alerts/telegram.mjs
@@ -359,10 +359,9 @@ export class TelegramAlerter {
         const msg = update.message;
         if (!msg?.text) continue;
 
-        const chatType = msg.chat?.type;
         const chatId = String(msg.chat?.id);
-        // Commands can come from private chats or the configured chat/group.
-        if (chatType !== 'private' && chatId !== String(this.chatId)) continue;
+        // Restrict command execution to the configured chat/group only.
+        if (chatId !== String(this.chatId)) continue;
 
         await this._handleMessage(msg);
       }
@@ -457,10 +456,8 @@ export class TelegramAlerter {
       description: description.substring(0, 256),
     }));
 
-    // Register globally, then force explicit private/group scopes.
-    await this._setMyCommands(botCommands);
-    await this._setMyCommands(botCommands, { type: 'all_private_chats' });
-    await this._setMyCommands(botCommands, { type: 'all_group_chats' });
+    // Register commands only for the configured chat to avoid global discovery.
+    await this._setMyCommands(botCommands, this._buildConfiguredChatScope());
   }
 
   async _loadBotIdentity() {
@@ -498,6 +495,14 @@ export class TelegramAlerter {
     }
   }
 
+  _buildConfiguredChatScope() {
+    const chatId = Number(this.chatId);
+    if (!Number.isSafeInteger(chatId)) {
+      throw new Error(`TELEGRAM_CHAT_ID must be a numeric chat id, got: ${this.chatId}`);
+    }
+    return { type: 'chat', chat_id: chatId };
+  }
+
   _normalizeCommand(rawCommand) {
     if (!rawCommand.startsWith('/')) return null;