Product : Citrix, XenServer/7.1, Standard
Feature : Scripting / APIs, Interoperability, Hypervisor
Content Owner:  Roman Macek
Summary
Yes (SDK, API, PowerShell)
Details
The Software Development Kit provides the architectural overview of the APIs and use of SDK tools provided: http://bit.ly/2mTnpDW
The XenServer 7.1 management API is documented in detail here: http://bit.ly/2n2qJMs