From 4b94ed8f928533b1f7c3a0293790ccb592b49f1a Mon Sep 17 00:00:00 2001
From: Andrew Xia <axia@meta.com>
Date: Mon, 10 Nov 2025 14:07:49 -0800
Subject: [PATCH] [Frontend][2/n] remove empty content from
 _parse_tool_calls_from_content (#28331)

Signed-off-by: Andrew Xia <axia@fb.com>
Co-authored-by: Andrew Xia <axia@fb.com>
---
 vllm/entrypoints/openai/serving_engine.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vllm/entrypoints/openai/serving_engine.py b/vllm/entrypoints/openai/serving_engine.py
index 8ce4ff574699d..30b8499b08d5b 100644
--- a/vllm/entrypoints/openai/serving_engine.py
+++ b/vllm/entrypoints/openai/serving_engine.py
@@ -1375,6 +1375,8 @@ class OpenAIServing:
                     for tool_call in tool_call_info.tool_calls
                 )
                 content = tool_call_info.content
+                if content and content.strip() == "":
+                    content = None
             else:
                 # No tool calls.
                 return None, content