# Utilities Browse debugging utilities and constants to use with the XPC APIs. ## Topics ### Debug Functions [`func xpc_debugger_api_misuse_info() -> UnsafePointer!`](/documentation/XPC/xpc_debugger_api_misuse_info()) Returns a pointer to a string that describes the reason XPC aborts the calling process. ### Version Details [`var XPC_API_VERSION: Int32`](/documentation/XPC/XPC_API_VERSION) The version of the XPC API. [`var IPHONE_SIMULATOR_HOST_MIN_VERSION_REQUIRED: Int32`](/documentation/XPC/IPHONE_SIMULATOR_HOST_MIN_VERSION_REQUIRED) The minimum required Simulator host version. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)