# 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/idocs87c36dc8dac653c1/1756265973448-33afdae2-c7e3-4623-bf64-7a5d3e5dfe5b.png)

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

![image.png](https://idocs-assets.marmot-cloud.com/storage/idocs87c36dc8dac653c1/1756274957784-0aff2de5-775d-4c6e-bd0a-f0c4bb24ac1e.png)