cloud: update use-chat2query-api.md release chat2query v2 (#15319)

tidb-cloud/data-service-get-started.md

@@ -57,6 +57,10 @@ To get started with Data Service, you can also create your own Data App, and the
 
 3. In the **Create Data App** dialog, enter a name, a description, and select clusters that you want the Data App to access.
 
+    > **Note:**
+    >
+    > By default, the Data App type is **Standard Data App**. If you want to create a **Chat2Query Data App**, refer to [Get Started with Chat2Query API](/tidb-cloud/use-chat2query-api.md) instead of this document.
+
 4. (Optional) To automatically deploy endpoints of the Data App to your preferred GitHub repository and branch, enable **Connect to GitHub**, and then do the following:
 
     1. Click **Install on GitHub**, and then follow the on-screen instructions to install **TiDB Cloud Data Service** as an application on your target repository.

tidb-cloud/data-service-manage-data-app.md

@@ -21,6 +21,10 @@ To create a Data App for your project, perform the following steps:
 
 2. Enter a name, a description, and select clusters that you want the Data App to access.
 
+    > **Note:**
+    >
+    > By default, the Data App type is **Standard Data App**. If you want to create a **Chat2Query Data App**, refer to [Get Started with Chat2Query API](/tidb-cloud/use-chat2query-api.md) instead of this document.
+
 3. (Optional) To automatically deploy endpoints of the Data App to your preferred GitHub repository and branch, enable **Connect to GitHub**, and then do the following:
 
     1. Click **Install on GitHub**, and then follow the on-screen instructions to install **TiDB Cloud Data Service** as an application on your target repository.

tidb-cloud/explore-data-with-chat2query.md

@@ -111,6 +111,20 @@ In Chat2Query, you can save your SQL queries in different SQL files and manage S
 - To rename a SQL file, move your cursor on the filename, click **...** next to the filename, and then select **Rename**.
 - To delete a SQL file, move your cursor on the filename, click **...** next to the filename, and then select **Delete**. Note that when there is only one SQL file on the **SQL Files** tab, you cannot delete it.
 
+## Access Chat2Query via API
+
+In addition to accessing Chat2Query via UI, you can also access Chat2Query via API. To do so, you need to create a Chat2Query Data App first.
+
+In Chat2Query, you can access or create a Chat2Query Data App as follows:
+
+1. Click **...** in the upper-right corner, and then click **Access Chat2Query via API**.
+2. In the displayed dialog, do one of the following:
+
+    - To create a new Chat2Query Data App, click **New Chat2Query Data App**.
+    - To access an existing Chat2Query Data App, click the name of target Data App.
+
+For more information, see [Get started with Chat2Query API](/tidb-cloud/use-chat2query-api.md).
+
 ## Generate an endpoint from a SQL file
 
 For TiDB clusters, TiDB Cloud provides a [Data Service (beta)](/tidb-cloud/data-service-overview.md) feature that enables you to access TiDB Cloud data via an HTTPS request using a custom API endpoint. In Chat2Query, you can generate an endpoint of Data Service (beta) from a SQL file by taking the following steps:
@@ -127,7 +141,6 @@ In Chat2Query, you can change the following settings:
 
 - The maximum number of rows in query results
 - Whether to show system database schemas on the **Schemas** tab
-- Whether to enable [Chat2Query API](/tidb-cloud/use-chat2query-api.md)
 
 To change the settings, take the following steps: