# iScan

Use iScan to validate your API requests and responses against Alipay+ standards.

On the **Sandbox** > **Tools** > **iScan** page, follow these steps:

1.  Select an API and the standard version. Enter your request or response in JSON format.

![image.png](https://idocs-assets.marmot-cloud.com/storage/idocs87c36dc8dac653c1/1756265583867-05827acd-0942-4d9e-b5a2-2af83a1661c6.png)

2.  Click **Scan**. The validation results are shown on the right.

![image.png](https://idocs-assets.marmot-cloud.com/storage/idocs87c36dc8dac653c1/1756275039502-1d07c922-a607-4e1b-97f9-a28894602e92.png)