Advanced Space control: what needs SIP off, and what doesn't

What works with SIP on (everything that matters)

System Integrity Protection restricts what can modify system files and inject into system processes. It does not block the window-management APIs HopTab uses:

• Automatic BSP tiling — yabai-style binary space partitioning, per Space, per display.
• Snapping, layouts, and shortcuts — all 17 snap directions, custom layouts, adjacent-window resize.
• Profiles with assigned desktops — a profile can auto-activate when you land on its Space.
• Moving windows to a profile's Space — turn on “Move windows to this desktop” in a profile's settings, and switching to that profile places its windows on its assigned Space instead of just hiding everything else. This is the feature people assume needs SIP off. It doesn't.

What actually requires reducing SIP

With SIP reduced, HopTab's Advanced section (Settings → Windows) unlocks one behavior: instant Space switching. Activating a profile jumps straight to its assigned Space with no slide animation — the same trick yabai users know. That's the whole list. HopTab does not install a scripting addition or inject code into the Dock, even with SIP off; the fragile parts of the yabai approach (payload injection that breaks on macOS point releases) are deliberately not part of HopTab.

Should you reduce SIP?

Builder to builder: for most people, no. SIP is the thing standing between malware and your system processes. Reducing it:

• weakens a real security boundary for every process on your Mac, not just HopTab;
• requires booting into Recovery mode to change, in either direction;
• can be reset by macOS updates, so the “benefit” needs re-doing;
• buys you, in HopTab's case, a nicer animation. That's a bad trade for most setups.

If you already run with reduced SIP for yabai or kernel development, HopTab will detect it and offer the toggle — you've already made the trade-off with open eyes. If you haven't: Apple documents the procedure in its Platform Security guide, and the yabai wiki covers the exact configuration its users run. We're pointedly not reproducing the commands here; if the trade-off is right for you, you'll have no trouble finding them, and you should read Apple's documentation first either way.

To check where you stand right now, run csrutil status in Terminal — or just open HopTab's Settings → Windows → Advanced, which shows your current SIP state.

How this compares to yabai

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