diff --git a/internal/translator/codex/claude/codex_claude_request.go b/internal/translator/codex/claude/codex_claude_request.go
index 8036d5d5..21d47f41 100644
--- a/internal/translator/codex/claude/codex_claude_request.go
+++ b/internal/translator/codex/claude/codex_claude_request.go
@@ -186,6 +186,12 @@ func ConvertClaudeRequestToCodex(modelName string, inputRawJSON []byte, _ bool)
 		shortMap := buildShortNameMap(names)
 		for i := 0; i < len(toolResults); i++ {
 			toolResult := toolResults[i]
+			// Special handling: map Claude web search tool to Codex web_search
+			if toolResult.Get("type").String() == "web_search_20250305" {
+				// Replace the tool content entirely with {"type":"web_search"}
+				template, _ = sjson.SetRaw(template, "tools.-1", `{"type":"web_search"}`)
+				continue
+			}
 			tool := toolResult.Raw
 			tool, _ = sjson.Set(tool, "type", "function")
 			// Apply shortened name if needed