diff --git a/apps/edge/internal/openai/server_test.go b/apps/edge/internal/openai/server_test.go
index f87eaab..79cafca 100644
--- a/apps/edge/internal/openai/server_test.go
+++ b/apps/edge/internal/openai/server_test.go
@@ -696,6 +696,60 @@ func TestSynthesizesTemplateToolCallKeepsStructuredCommandArgs(t *testing.T) {
 	}
 }
 
+func TestSynthesizesTemplateToolCallFollowsClineUnionSchemaWithShellStrings(t *testing.T) {
+	content := "확인합니다.\n\n{{run_commands(commands=[{'command': 'git', 'args': ['-C', '/config/workspace/iop', 'status']}, {'command': 'pwd && ls -la /config/workspace/'}])}}"
+	tools := []any{map[string]any{
+		"type": "function",
+		"function": map[string]any{
+			"name": "run_commands",
+			"parameters": map[string]any{
+				"type": "object",
+				"properties": map[string]any{
+					"commands": map[string]any{
+						"type": "array",
+						"items": map[string]any{
+							"anyOf": []any{
+								map[string]any{
+									"type": "object",
+									"properties": map[string]any{
+										"command": map[string]any{"type": "string"},
+										"args": map[string]any{
+											"type":  "array",
+											"items": map[string]any{"type": "string"},
+										},
+									},
+								},
+								map[string]any{"type": "string"},
+							},
+						},
+					},
+				},
+			},
+		},
+	}}
+
+	_, toolCalls := synthesizeToolCallsFromText(content, tools, "run-test")
+
+	if len(toolCalls) != 1 {
+		t.Fatalf("tool_calls len: got %d", len(toolCalls))
+	}
+	call := toolCalls[0].(map[string]any)
+	fn := call["function"].(map[string]any)
+	var args map[string][]string
+	if err := json.Unmarshal([]byte(fn["arguments"].(string)), &args); err != nil {
+		t.Fatalf("arguments JSON: %v", err)
+	}
+	if len(args["commands"]) != 2 {
+		t.Fatalf("commands len: %+v", args["commands"])
+	}
+	if args["commands"][0] != "git -C /config/workspace/iop status" {
+		t.Fatalf("first command: %+v", args["commands"][0])
+	}
+	if args["commands"][1] != "pwd && ls -la /config/workspace/" {
+		t.Fatalf("second command: %+v", args["commands"][1])
+	}
+}
+
 func TestSynthesizesTemplateToolCallConvertsStructuredShellOperatorsToString(t *testing.T) {
 	content := "확인합니다.\n\n{{run_commands(commands=[{'command': 'cd', 'args': ['/config/workspace/iop', '&&', 'git', 'status', '&&', 'git', 'diff', '--stat']}, {'command': 'ls', 'args': ['-la', '/config/workspace/iop', '&&', 'pwd']}])}}"
 	tools := []any{map[string]any{
diff --git a/apps/edge/internal/openai/types.go b/apps/edge/internal/openai/types.go
index 51e4030..1c75c17 100644
--- a/apps/edge/internal/openai/types.go
+++ b/apps/edge/internal/openai/types.go
@@ -802,6 +802,9 @@ func normalizeCommandArgument(command any, schema commandArgSchema) (any, bool)
 	}
 	if args, ok := stringSliceArgument(m["args"]); ok {
 		commandText = strings.TrimSpace(commandText)
+		if schema.allowsString {
+			return renderShellCommand(commandText, args), true
+		}
 		if commandExecutableNeedsShell(commandText) || commandArgsNeedShell(args) {
 			if schema.allowsString || !schema.allowsObject {
 				return renderShellCommand(commandText, args), true
@@ -816,6 +819,9 @@ func normalizeCommandArgument(command any, schema commandArgSchema) (any, bool)
 	}
 	commandText = strings.TrimSpace(commandText)
 	if commandText != "" {
+		if schema.allowsString {
+			return commandText, true
+		}
 		if commandStringNeedsShell(commandText) {
 			return commandText, true
 		}