diff --git a/.gitmodules b/.gitmodules
index b371a2a..acc49b1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "tools"]
 	path = tools
-	url = https://github.com/devchat-ai/devchat-vscode-tools.git
+	url = git@github.com:devchat-ai/devchat-vscode-tools.git
diff --git a/src/contributes/commands.ts b/src/contributes/commands.ts
index cc77c58..eb5c36c 100644
--- a/src/contributes/commands.ts
+++ b/src/contributes/commands.ts
@@ -87,6 +87,12 @@ function regAccessKeyCommand(context: vscode.ExtensionContext, provider: string)
 			if (passwordInput === undefined) {
 				return;
 			}
+			if (provider === "DevChat" && passwordInput.trim() !== "") {
+				if (!passwordInput.trim().startsWith("DC.")) {
+					UiUtilWrapper.showErrorMessage("Your key is invalid! DevChat Access Key is: DC.xxxxx");
+					return;
+				}
+			}
 
 			if (passwordInput.trim() !== "" && !isValidApiKey(passwordInput)) {
 				UiUtilWrapper.showErrorMessage("Your key is invalid!");
@@ -223,6 +229,8 @@ export function regApplyDiffResultCommand(context: vscode.ExtensionContext) {
 				const leftDoc = await vscode.workspace.openTextDocument(leftUri);
 				const rightDoc = await vscode.workspace.openTextDocument(rightUri);
 
+				// close rightDoc
+				await vscode.commands.executeCommand('workbench.action.closeActiveEditor');
 				// 将右边文档的内容替换到左边文档
 				const leftEditor = await vscode.window.showTextDocument(leftDoc);
 				await leftEditor.edit(editBuilder => {
@@ -289,9 +297,9 @@ export function registerInstallCommandsPython(context: vscode.ExtensionContext)
 		if (!fs.existsSync(requirementsFile)) {
 			requirementsFile = path.join(os.homedir(), '.chat', 'workflows', 'sys', 'requirements.txt');
 			if (!fs.existsSync(requirementsFile)) {
-				logger.channel()?.warn(`requirements.txt not found in ~/.chat/workflows dir.`);
-				logger.channel()?.show();
-				vscode.window.showErrorMessage(`Error: see OUTPUT for more detail!`);
+				// logger.channel()?.warn(`requirements.txt not found in ~/.chat/workflows dir.`);
+				// logger.channel()?.show();
+				// vscode.window.showErrorMessage(`Error: see OUTPUT for more detail!`);
 				return ;
 			}
 		}
@@ -319,7 +327,7 @@ export function registerInstallCommandsPython(context: vscode.ExtensionContext)
 		}
 		
 		UiUtilWrapper.updateConfiguration("DevChat", "PythonForCommands", pythonCommand.trim());
-		vscode.window.showInformationMessage(`All slash Command has ready to use! Please input / to try it!`);
+		vscode.window.showInformationMessage(`All slash Commands are ready to use! Please input / to try workflow commands!`);
 	});
 
 	context.subscriptions.push(disposable);
diff --git a/src/handler/accessKeyHandler.ts b/src/handler/accessKeyHandler.ts
index 482026d..b7222e6 100644
--- a/src/handler/accessKeyHandler.ts
+++ b/src/handler/accessKeyHandler.ts
@@ -31,5 +31,5 @@ export async function getUserAccessKey(message: any, panel: vscode.WebviewPanel|
 			"keyType": llmModelData.api_key?.startsWith("DC.") ? "DevChat" : "others",
 			"endPoint": llmModelData.api_base ? llmModelData.api_base : ""
 		};
-		MessageHandler.sendMessage(panel, keyData);
+		MessageHandler.sendMessage(panel, keyData, false);
 }
\ No newline at end of file
diff --git a/src/toolwrapper/devchat.ts b/src/toolwrapper/devchat.ts
index 967dc2a..18b1a39 100644
--- a/src/toolwrapper/devchat.ts
+++ b/src/toolwrapper/devchat.ts
@@ -116,7 +116,11 @@ class DevChat {
 		args.push("-m", llmModelData.model);
 
 		args.push("-ns");
-		args.push("-a");
+
+		const functionCalling = UiUtilWrapper.getConfiguration('DevChat', 'EnableFunctionCalling');
+		if (functionCalling) {
+			args.push("-a");
+		}
 
 		return args;
 	}
@@ -194,11 +198,11 @@ class DevChat {
 	private async runCommand(args: string[]): Promise<{code: number | null, stdout: string, stderr: string}> {
 		// build env variables for command
 		const envs = {
+			...process.env,
 			// eslint-disable-next-line @typescript-eslint/naming-convention
 			"PYTHONUTF8":1,
 			// eslint-disable-next-line @typescript-eslint/naming-convention
-			"PYTHONPATH": UiUtilWrapper.extensionPath() + "/tools/site-packages",
-			...process.env
+			"PYTHONPATH": UiUtilWrapper.extensionPath() + "/tools/site-packages"
 		};
 
 		const pythonApp = UiUtilWrapper.getConfiguration("DevChat", "PythonForChat") || "python3";
@@ -291,7 +295,7 @@ class DevChat {
 				"prompt-hash": logs[0]['hash'],
 				user: "",
 				date: "",
-				response: stdout,
+				response: responseData.response,
 				// eslint-disable-next-line @typescript-eslint/naming-convention
 				finish_reason: "",
 				isError: false,
diff --git a/tools b/tools
index c9cc0d5..bbd2c13 160000
--- a/tools
+++ b/tools
@@ -1 +1 @@
-Subproject commit c9cc0d51a4d24162aaa2216e0bb0c6b198f74206
+Subproject commit bbd2c13b6b08622bdea6b1e78a593af854c78859