From fd1e59b25ff68ff015ce84707839084157df6045 Mon Sep 17 00:00:00 2001
From: G30 <50341825+silentoplayz@users.noreply.github.com>
Date: Tue, 20 Oct 2026 13:18:13 -0400
Subject: [PATCH] fix: an array query parameter reaches an OpenAPI tool server
 as repeated values (#32677)

---
 backend/open_webui/utils/tools.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/open_webui/utils/tools.py b/backend/open_webui/utils/tools.py
index 212d283129..18eb0781f3 100644
--- a/backend/open_webui/utils/tools.py
+++ b/backend/open_webui/utils/tools.py
@@ -1867,7 +1867,7 @@ async def execute_tool_server(
             final_url = final_url.replace(f'{{{key}}}', quote(str(value), safe=''))
 
         if query_params:
-            final_url = f'{final_url}?{urlencode(query_params)}'
+            final_url = f'{final_url}?{urlencode(query_params, doseq=True)}'
 
         request_body_content = operation.get('requestBody', {}).get('content')
         if request_body_content and params: