Which version of code is required for the ASA REST API?

The requirement for the ASA REST API is that the device must be running version 9.3(2) or 9.4(1) and above. This means that the earliest version that supports the REST API is 9.3(2); thus, any version higher than this—including 9.4(1) and later—is also compatible.

Cisco introduced REST API capabilities in its ASA software starting from these specific versions, allowing users to interact programmatically with the security appliances. This API support enhances automation, making it easier to integrate ASA devices into DevOps workflows and network management solutions.

In this context, it is essential to keep the network security devices updated to take advantage of new features and enhancements, including those related to API capabilities. Therefore, selecting version 9.3(2) or 9.4(1) and above covers a broader range of releases that are compatible with REST API, which is crucial for network programmability initiatives.