From d312d67803fa83f1915569389a56ba20cf43b3c7 Mon Sep 17 00:00:00 2001
From: highbor <429335297@qq.com>
Date: Sat, 27 Jun 2026 20:53:07 +0800
Subject: [PATCH] fix(openai/adapter): handle tool_search type to avoid empty
 tool name

Codex sends tools with type "tool_search" but no name field. Previously
this fell through to the default case and produced an empty tool name,
which upstream providers (e.g. DeepSeek) reject.

Assign the synthetic name "tool_search" like web_search/file_search.

Fixes: Invalid 'tools[15].function.name': empty string
---
 internal/protocol/openai/adapter.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/internal/protocol/openai/adapter.go b/internal/protocol/openai/adapter.go
index 2dab9d1a..7ac64d73 100644
--- a/internal/protocol/openai/adapter.go
+++ b/internal/protocol/openai/adapter.go
@@ -1869,6 +1869,13 @@ func convertToolWithNamespace(tool Tool, namespace string, disablePatchProxy fun
 			Description: "Search the web for up-to-date information.",
 			Extensions:  ext,
 		}}
+	case "tool_search":
+		ext["source_type"] = tool.Type
+		return []format.CoreTool{{
+			Name:        tool.Type,
+			Description: "Search over deferred tool metadata and expose matching tools for the next model call.",
+			Extensions:  ext,
+		}}
 	case "file_search":
 		ext["source_type"] = tool.Type
 		ext["max_num_results"] = tool.MaxNumResults