accessibility

Subscribes to iOS’s own accessibility change notifications. One reading per setting, both for whichever are already on when the instrument activates and for any the user flips while the app is open.


Delivery	stream, onChange
Mechanism	notification
Requires	iOS 17+, basset 0.1.1+

Real output from basset request get, captured against a running app:

CAPTURED                  ELAPSED  INSTRUMENT

launch 17264063491665113292
2026-08-23T14:09:29.534Z  +0.0s    environment.accessibility(deviceSetting)
├─ occurrenceCount  2
├─ settingName      videoAutoplay
└─ settingEnabled   true
2026-08-23T14:09:29.546Z  +0.0s    environment.accessibility(deviceSetting)
├─ settingName      shakeToUndo
└─ settingEnabled   true
2026-08-23T14:10:05.672Z  +36.1s   environment.accessibility(deviceSetting)
├─ occurrenceCount  3
├─ settingName      reduceMotion
└─ settingEnabled   true
2026-08-23T14:10:05.672Z  +36.1s   environment.accessibility(deviceSetting)
├─ settingName      videoAutoplay
└─ settingEnabled   true
2026-08-23T14:10:05.672Z  +36.1s   environment.accessibility(deviceSetting)
├─ settingName      shakeToUndo
└─ settingEnabled   true

Getting Started

SDK

CLI

Instruments

Reference