[Frontend] OpenAI Responses API supports Tool/Function calling

Signed-off-by: chaunceyjiang <chaunceyjiang@gmail.com>

Author: chaunceyjiang

vllm/entrypoints/openai/serving_chat.py

@@ -87,8 +87,7 @@ def __init__(
             tool_parser_name=tool_parser, enable_auto_tools=enable_auto_tools)
 
         self.exclude_tools_when_tool_choice_none = (
-            exclude_tools_when_tool_choice_none
-        )
+            exclude_tools_when_tool_choice_none)
 
         self.enable_prompt_tokens_details = enable_prompt_tokens_details
         self.enable_force_include_usage = enable_force_include_usage

vllm/entrypoints/openai/serving_responses.py

@@ -83,8 +83,7 @@ def __init__(
         self.tool_parser = self._get_tool_parser(
             tool_parser_name=tool_parser, enable_auto_tools=enable_auto_tools)
         self.exclude_tools_when_tool_choice_none = (
-            exclude_tools_when_tool_choice_none
-        )
+            exclude_tools_when_tool_choice_none)
         self.enable_prompt_tokens_details = enable_prompt_tokens_details
         self.enable_force_include_usage = enable_force_include_usage
         self.default_sampling_params = (
@@ -142,8 +141,8 @@ async def create_responses(
             lora_request = self._maybe_get_adapters(request)
             model_name = self._get_model_name(request.model, lora_request)
             tokenizer = await self.engine_client.get_tokenizer(lora_request)
-            if (request.tools is None or
-                (request.tool_choice == "none"
+            if (request.tools is None
+                    or (request.tool_choice == "none"
                         and self.exclude_tools_when_tool_choice_none)):
                 tool_dicts = None
             else:

vllm/entrypoints/openai/tool_parsers/glm4_moe_tool_parser.py

@@ -6,6 +6,7 @@
 from typing import Union
 
 import regex as re
+
 # yapf conflicts with isort for this block
 # yapf: disable
 from vllm.entrypoints.openai.protocol import (ChatCompletionRequest,

vllm/entrypoints/openai/tool_parsers/hunyuan_a13b_tool_parser.py

@@ -7,6 +7,7 @@
 from typing import Any, Optional, Union
 
 import regex as re
+
 # yapf conflicts with isort for this block
 # yapf: disable
 from vllm.entrypoints.openai.protocol import (ChatCompletionRequest,

vllm/entrypoints/openai/tool_parsers/qwen3coder_tool_parser.py

@@ -7,6 +7,7 @@
 from typing import Any, Optional, Union
 
 import regex as re
+
 # yapf conflicts with isort for this block
 # yapf: disable
 from vllm.entrypoints.openai.protocol import (ChatCompletionRequest,