feat: add experimental system-wide API key masking via Accessibility overlay#10
Merged
easyvibecoding merged 2 commits intomainfrom Mar 21, 2026
Merged
feat: add experimental system-wide API key masking via Accessibility overlay#10easyvibecoding merged 2 commits intomainfrom
easyvibecoding merged 2 commits intomainfrom
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…overlay Add system-wide masking that detects API keys in any macOS application using the Accessibility API and covers them with floating NSPanel overlays. Core implementation: - SystemMaskingService: AXObserver monitors focused UI elements across all apps via kAXFocusedUIElementChangedNotification and kAXValueChangedNotification. 10ms initial / 30ms debounce + 500ms polling fallback. Immediate scan on app switch. - AXBoundsForRange: precise multi-line text coordinate calculation, supports keys spanning multiple visual lines - SystemOverlayController: click-through NSPanel overlays with ignoresMouseEvents, reuses panels via deterministic UUID per match - MaskOverlayView: solid background overlay with masked text display Integration: - Settings toggle: "System-wide masking (experimental)" in Security tab, default OFF. Only activates when both setting AND Demo Mode are ON. - Peek mode: hold ⌃⌥Space to temporarily hide all overlays - Overlay lifecycle: auto-clear on app switch, text change, Demo Mode OFF Performance (measured): - Pattern matching: 0.1-0.3ms per scan - Total scan + overlay: 2-6ms - NSHostingView reuse prevents view accumulation - Text cache prevents redundant overlay updates - Safe AX API usage: nil guards, isRunning check in callback Known limitations (marked experimental): - Only scans focused element (sidebar/non-focused areas not covered) - Copy/paste still exposes original key (visual overlay only) - Some apps may not fully support AX text attributes Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Document ScreenCaptureKit + Virtual Camera approach as a more secure alternative to the overlay method. Includes architecture, code examples, lessons learned from overlay implementation, and suggested contribution order. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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swift build+swift test— 48 tests pass🤖 Generated with Claude Code