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simulator_list_runtimes

List all simulator runtimes installed on your system, including iOS, watchOS, tvOS, and visionOS. Each runtime entry shows its name, version, build number, identifier, and availability status. Use this tool to discover which runtimes are available before creating a new simulator.

Parameters

This tool takes no parameters.

Usage Examples

List all installed runtimes

“What iOS simulator runtimes do I have installed?”

{}

Check available runtimes before creating a simulator

“Which runtimes can I use to create a new simulator?”

{}

Example Output

Installed Runtimes:

iOS 18.0 (22A3354)
  Identifier: com.apple.CoreSimulator.SimRuntime.iOS-18-0
  Available: Yes

iOS 17.5 (21F79)
  Identifier: com.apple.CoreSimulator.SimRuntime.iOS-17-5
  Available: Yes

iOS 17.0 (21A328)
  Identifier: com.apple.CoreSimulator.SimRuntime.iOS-17-0
  Available: Yes

iOS 16.4 (20E247)
  Identifier: com.apple.CoreSimulator.SimRuntime.iOS-16-4
  Available: No (runtime not installed)

watchOS 11.0 (22R5348a)
  Identifier: com.apple.CoreSimulator.SimRuntime.watchOS-11-0
  Available: Yes

tvOS 18.0 (22J5356a)
  Identifier: com.apple.CoreSimulator.SimRuntime.tvOS-18-0
  Available: Yes

visionOS 2.0 (22N5297g)
  Identifier: com.apple.CoreSimulator.SimRuntime.xrOS-2-0
  Available: Yes

simulator_create — Create a simulator using a runtime identifier from this list
simulator_list_device_types — List device types to pair with a runtime when creating a simulator
simulator_list — See which runtimes your existing simulators are using
simulator_delete — Clean up simulators whose runtimes are no longer available

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