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00 Overview and Mental Model It is listed under AI & ML on SkillMD.

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tools-only (@tools-only) published this skill. Their other Agent Skills are listed on their SkillMD profile.

2571 00 Overview And Mental Model Cd0f38f1 by tools-only

Name: 2571 00 Overview And Mental Model Cd0f38f1
Author: tools-only

File contents

00 Overview and Mental Model

Purpose

Define the end-to-end Screen Time API architecture for building iOS 16+ app/website blocking and usage analytics apps without mixing framework responsibilities.

Canonical API Surface

FamilyControls: authorization + selection (AuthorizationCenter, FamilyActivityPicker, FamilyActivitySelection).
ManagedSettings: enforcement (ManagedSettingsStore, ShieldSettings, web content filtering, app blocking knobs).
ManagedSettingsUI: custom shield display and action extension points.
DeviceActivity: schedule/event monitoring and background enforcement callbacks.
_DeviceActivity_SwiftUI: report rendering pipeline for usage analytics.
ScreenTime framework: web usage reporting/control for web content your app presents.

Implementation Pattern

Request Family Controls authorization.
Collect token selection through system picker.
Persist selection in app-group storage for app + extensions.
Apply/clear policies through ManagedSettings stores.
Use DeviceActivity to schedule enforcement while app is inactive.
Provide custom shield UX through ManagedSettingsUI extensions.
Render usage reports with report extension and context-based filtering.

Failure Modes

Treating tokens as bundle IDs or stable app metadata.
Applying shields without checking authorization status.
Omitting app-group sharing across targets.
Attempting network calls in report extension sandbox.
Using schedule intervals below supported minimums.

Validation Checklist

Main app + all extensions share family-controls entitlement and same app group.
Selection persistence works across process boundaries.
Monitor callbacks apply/clear policies as expected when app is terminated.
Token-based labels render in UI.
Report extension renders without network dependencies.

Sources

../evidence/01-familycontrols-sdk-signatures.md
../evidence/02-managedsettings-sdk-signatures.md
../evidence/04-deviceactivity-sdk-signatures.md
../evidence/05-deviceactivity-report-sdk-signatures.md
../evidence/06-screentime-framework-headers.md

Confidence Notes

Framework role separation is canonical + sdk-backed.
The exact product UX ordering is an implementation choice (inference, validated by project rundowns).

---name: 2571-00-overview-and-mental-model-cd0f38f1description: 00 Overview and Mental Model---# 00 Overview and Mental Model## PurposeDefine the end-to-end Screen Time API architecture for building iOS 16+ app/website blocking and usage analytics apps without mixing framework responsibilities.## Canonical API Surface- `FamilyControls`: authorization + selection (`AuthorizationCenter`, `FamilyActivityPicker`, `FamilyActivitySelection`).- `ManagedSettings`: enforcement (`ManagedSettingsStore`, `ShieldSettings`, web content filtering, app blocking knobs).- `ManagedSettingsUI`: custom shield display and action extension points.- `DeviceActivity`: schedule/event monitoring and background enforcement callbacks.- `_DeviceActivity_SwiftUI`: report rendering pipeline for usage analytics.- `ScreenTime` framework: web usage reporting/control for web content your app presents.## Implementation Pattern1. Request Family Controls authorization.2. Collect token selection through system picker.3. Persist selection in app-group storage for app + extensions.4. Apply/clear policies through ManagedSettings stores.5. Use DeviceActivity to schedule enforcement while app is inactive.6. Provide custom shield UX through ManagedSettingsUI extensions.7. Render usage reports with report extension and context-based filtering.## Failure Modes- Treating tokens as bundle IDs or stable app metadata.- Applying shields without checking authorization status.- Omitting app-group sharing across targets.- Attempting network calls in report extension sandbox.- Using schedule intervals below supported minimums.## Validation Checklist- [ ] Main app + all extensions share family-controls entitlement and same app group.- [ ] Selection persistence works across process boundaries.- [ ] Monitor callbacks apply/clear policies as expected when app is terminated.- [ ] Token-based labels render in UI.- [ ] Report extension renders without network dependencies.## Sources- `../evidence/01-familycontrols-sdk-signatures.md`- `../evidence/02-managedsettings-sdk-signatures.md`- `../evidence/04-deviceactivity-sdk-signatures.md`- `../evidence/05-deviceactivity-report-sdk-signatures.md`- `../evidence/06-screentime-framework-headers.md`## Confidence Notes- Framework role separation is `canonical + sdk-backed`.- The exact product UX ordering is an implementation choice (`inference`, validated by project rundowns).

Frequently asked questions

2571 00 Overview And Mental Model Cd0f38f1