Changed
- Sign-in now expects the "unverified app" screen and walks you past it. zero's Google sign-in is published and in production, but Google's review of restricted Gmail access is a paid, ongoing process we've chosen not to pursue at this scale — so the consent screen shows a "Google hasn't verified this app" warning. The onboarding now tells you this is expected and safe, and shows exactly what to tap (Advanced → Go to zero) to continue signing in to your own inbox.
Installing
Requires macOS 26 (Tahoe, Apple Silicon). zero is signed ad-hoc, not notarized by
Apple, so a downloaded copy is quarantined and Gatekeeper refuses to launch it —
expected for a source-available app. The quarantine flag must be removed once.
Easiest — one command does everything (installs prerequisites, removes the
quarantine flag, launches):
curl -fsSL https://raw.githubusercontent.com/drewling/zero/master/macapp/install-zero.sh | bash
By hand: open the DMG, drag zero to Applications, then in Terminal:
/usr/bin/xattr -cr /Applications/zero.app
Use the full /usr/bin/xattr path — a Python or Homebrew xattr earlier in your
PATH may not support the recursive flag and will silently fail, leaving the app
blocked. (On macOS 26 the old right-click → Open trick no longer works for
ad-hoc-signed apps.)
Full setup (Google + Claude CLIs, first run) is in the README.